Patagium

Definition and stakes

Chambers's Twentieth Century Dictionary…

“ Patagium, pat-ā-jī′um, n. the wing-membrane of a bat, &c.: the parachute of a flying squirrel, &c.: the fold of integument between the upper arm and the forearm of a bird: one of the scales affixed to the pronotum of lepidopterous insects—the tegula. [L., 'a gold edging.']
Patamar, pat′a-mär, n. a vessel on the Bombay coast, with arched keel, and great stem and stern rake.
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Source: Gutenberg

Portrait of Ernst Haeckel Ernst Haeckel,  Report on the Radiolaria (1887)

“ Phacoid shell three times as broad as the medullary shell, with eight pores on its radius. Arms nearly equilateral triangular, twice as long as the diameter of the phacoid shell, at the truncated distal end as broad as the latter, at the base only one-third as broad. Patagium a circular lenticular disk, enveloping only the basal third of the arms, with three to four concentric circular rings, divided into chambers by about forty radial beams, which are prolonged beyond the margin of the patagium into radial spines. ”
Source: Wikisource

Portrait of Ernst Haeckel Ernst Haeckel,  Report on the Radiolaria (1887)

“ Amphymenium murrayanum, Haeckel, 1879, MS. et Atlas (pl. xliv. fig. 10) . Both arms different in size; the larger one and a half times as long and broad as the smaller. Both arms triangular, forked at the broader distal end, with two very strong, conical, divergent, straight terminal spines. Patagium broad, incomplete, with circular perimeter. Called in honour of my friend Dr. John Murray.
Dimensions.—Radius of the larger arm (including the spines) 0.24, of the smaller 0.16; distance of the terminal points of the former 0.18, of the latter 0.09; diameter of the patagium 0.2.
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Source: Wikisource

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