Samuel Pickworth Woodward

“ The under side exhibits ten pairs of rows of tubercles, largest at the margin, and diminishing gradually to the central orifice. On the upper surface the tubercles are much smaller, and there are two additional rows on the inter-ambulacral bands, external to those which are continued downwards over the base. ”

“ Mantell in his original description of the species, and serves to distinguish it from another form, nearly equally common in the chalk, which is figured and described by Goldfuss as C. granulosus, but is generally regarded as a (perhaps sexual?) variety, having a more tumid shell, and with the additional rows of tubercles on the upper surface rudimentary or obsolete.
The pairs of ambulacral pores in Cyphosoma Kœnigi, form ten winding lines from the mouth-opening (peristome) to the apical orifice (periproct) . ”