Carpenter, William Benjamin, 1813-1885 · London : John Churchill · leaf 582
ly to the elongation of these interspaces. 315. The calcare-ous plates which form ^^<^- 239.the less compact ske-letons of the Asfe-riada (star-fish andtheir allies) and ofthe Ophiurida (sand-stars and brittle-stars), have the sametexture as those ofthe shell of Echinus.And this presents… … Calcareous plate and elaw of Astrophyto(Euryale). 560 OF ECHINODEEMATA. and are not mere projections of the horny integument. Anexample of this kind, furnished by the Astropliyton (betterknown as the Euryccle), is represented in Eig. 239. Thespines with which the arms of the species of…
Microscopy
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