Various

“ The brain differs in structure from the cord, the central fibrous mass is more dense, the cells are very much smaller and more numerous. Some cells of the brain send their fibers out directly without the common pathway of a distinct nerve trunk. ”

“ The egg has a delicate covering by which it is attached to the leaf. Nearly every egg has a sort of spine-shape structure attached, although it is not exactly a spine but a part of the egg covering, which, when it has dried, gives it a black streaked appearance at that point. ”

“ Throughout the body the ventral nerve cord kept about the same width, although the muscle bands at the sides increased somewhat. The strands connecting the muscles and nerves to the animal’s body were more or less regularly arranged. In specimens with the proboscis drawn in, the nerve cord is of course doubled back on itself. ”

“ After emerging from their hibernating quarters, the beetles jump or fly to the nearest rose bush and soon begin to satisfy their appetite after the long winter’s fast. At this time the tender bursting rose buds seem to be the favorite food, and the beetles engorge themselves with bites from the prospective crop of leaves, then locked up in the buds. The beetles seem to be most active during the warmer sunshiny portions of the day, when they may be seen jumping and flying about the rose bushes. ”

“ Their shining bronze color renders it easy to discover and watch them at their destructive work. They begin gnawing an unsightly hole into either the side or top of the bursting leaf bud, often boring into the bud so far as to be almost hidden from view. It usually takes the beetles a few days to satisfy their vigorous spring appetites; then they turn their attention to the propagation of their kind. The later emerging adults feed voraciously on the foliage (Pl. I, Fig. 5) eating out irregular places in the leaves. ”

“ The cephalothorax is strongly chitinized, showing two small oval spots. The small suboval area between the chitinized cephalothorax and the abdomen is soft with five chitinized plates.
On the dorsal surface of each abdominal segment are two muscle depressions, while on the ventral surface the fourth, fifth and sixth segments have dark colored plates near the segmental divisions which are used for muscle attachments; besides the two muscle depressions. ”

“ The nerve cords were dissected out and mounted after staining. Some were imbedded, sectioned and stained. The stain which brought out the cells with greatest clearness was copper haematoxylin.
The general character of the nervous system of sipunculids is well known, and the specimens examined at this time were typical as to the form of the brain and cord. The brain is imbedded in the proboscis just below the tentacles. It has a similar appearance in section to the photographs of Spengel, 1912. The brain is small. Two main branches supply nearby tentacles and muscles. ”

“ The egg measures 1 mm. in length by .25 mm. in width.
The Larvae (Pl. I, Fig. 7) when full grown have the body wider at the anterior end, tapering gradually to the anal segment and covered with many hairs. They are covered with an oily substance in which they often collect their excrement as they feed and travel. The entire larva is black and the segments of the body possess numerous tubercles bearing setae. Each segment of the abdomen has a group of tubercles on a side above the spiracles. When full grown the larvae measure from 6 to 8 mm. ”

“ The insect passes the winter in the adult stage and during that time may be found concealed in convenient places. The writer has taken numerous individuals from beneath the moss of the scrub oak, which grows abundantly along the creeks in the Willamette Valley in Oregon. The first individuals were taken on April 11, 1913, feeding on a species of wild rose, Rosa nukatana Presl. near Corvallis, Oregon. The adults were at the time resting in the sun on the dried fruits of the rose and also on the moss which covered the oaks. In 1915, the first beetles were out on March 19 or somewhat earlier. ”

“ When full grown the larvae drop to the soil and after burrowing to a depth of about an inch or less, they construct soil cells of earth (Pl. I, Fig. 6) , not unlike the cell of the common cherry and pear slug, in which they pupate. By July 3, 1913, many larvae were « 16 » falling to the soil. ”

“ The length of the adult stage is about ten months, depending, of course, upon the time the warm days approach in the spring and upon the cold stretches which intervene, conditions which influence emergence from their hibernating quarters. ”

“ Serial sections of embryos of mammals, reptiles, birds, fish or invertebrate embryos or adults will be made to order at from 25 cents to 75 cents a slide, depending upon the stain and character of the object.
Prices include preservatives and containers in most cases.
The KA Binocular Microscope
Is of great value in all biological work where low and medium powers are employed. In embryology the true stereoscopic image shows the relative position of important details. This feature is of great assistance to the student and makes the instructor’s work easy. ”

“ By the first of August many adults could be found. They are a beautiful metallic color when just emerged. The writer bred from the adults a species of Diptera a Tachinid but has not been able to ascertain the species. Subsequent observation revealed no eggs, so undoubtedly the species is single brooded. The life-cycle is calculated to last about fifty-five days from eggs to adults, but this is greatly influenced by the weather conditions. ”

“ The long process of the coxa clothed with its long simple hairs seems to have some performance in the work of the mouth parts. The labium is suboval, clothed thickly with simple short hairs, the upper margin having a single row of long heavy straight hairs with many long single curved hairs covering them.
The mandibles are provided with three distinct kinds of hairs or spines. The large subquadrate proximal joint was clothed with long barbed spines, the movable finger having on its median surface a row of fifteen back curved barbed spines. ”

“ These creatures were without eyes and yet they seemed to avoid forceps. They were able to run backwards or forwards with equal ease. On examination it was found that there were long hairs on the legs such as shown in the figure. Other specimens were afterwards found in one of the nearby canyons, and two specimens in the college collection were marked “C. Metz, in the mountains near Claremont.”
Upon looking through the literature the species was determined to be Trithyreus pentapeltis Cook. In 1899 Dr. Hubbard collected some at Palm Springs under stones in the canyon near the stream. ”

“ Differs from catesbaei Ashmead (types compared) , in being larger, the median channel of the propodeum is distinct for its whole length and does not consist principally of two large foreae, the cross-carina passing profimad of it has an area on each side of the meson which runs at first nearly parallel to the channel (the forking) but in the Florida species, this carina continues more or less parallel with the cephalic margin of the propodeum.
Scutellista cyanea Mots
One female, Claremont, California (C. F. Baker) .
Cleonymus californicus n. sp.
Female: Length, 4.00 mm. ”

“ This species has been taken from our region although such large specimens have been reported only from dryer regions. This specimen, a male is from Brawley, Cal. (Figs. 1 and 2) . Figs. 3 and 4 were taken from a young specimen collected at Claremont.
The movable finger of the cheliceræ of the male has two large teeth. Anterior margin of rephalothorix straight. Hind tarsi one segment.
Eremobates californica Sim.
The drawings are from a specimen taken at Laguna Beach (Figs. 5 and 6) . Specimens were also taken at Claremont. ”

“ Color: Cephalothorax light reddish brown, pedipalps darker, abdomen and legs pale yellow.
Similar to C. dorsalis, but fingers a little longer than hand; no eye spots, clavate hairs found on all parts of two types, on legs and pedipalps more clavate on one side (Fig. 3) on body evening clavate (Fig. 4) . Simple hairs found on under surface of tarsus. All parts covered with small chiton plates.
Habitat: Specimens taken from under stones in wash near Claremont.
(Contribution from the Zoological Laboratory of Pomona College)
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EXPLANATION OF FIGURES
Figure 1. ”

“ A similar course is to be offered this summer to those who have had some zoology. It is believed that this work will bring greater and greater advantages to us here as we come to know the local conditions better. In the nature of the material this will always be to a large extent a field study.
The course in birds given by Professor Nininger was interesting and valuable. A number of new records for this region were obtained during the summer.
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For the first time Miss Hills gave a course in drawing in connection with zoological subjects. ”