CCELOPLEUEUS FLORIDANUS. 23 
* Podocidaris scutata A. Ag. 
Podocidaris scutata A. Ad. Bull. M. C. Z., VIII., No. 2, p. 72, 1880. 
Off Santa Cruz. 580 fathoms. 
Only one specimen of thi.s species was collected. It is much larger 
than either of the others of the genus. Test depressed, remarkable for 
its large abactinal system. The whole abactinal surface of test covered 
by small, distant, fine, slender fixed spines contrasting with the correspond- 
ing coarse granulation of P. sculpta ; fewer large primary tubercles close to 
the ambitus on the actinal surface. Actinal membrane entirely covered by 
prominent imbricating plates ; five anal plates, as in P. prionigera, to which 
it is most closely allied. Test light gra3dsh brown when alive. 
Ccelopleurus floridanus A. Ac. 
Lat. 23° 52' N., Long. 88° 5' W. West India Islands, — Barbados. 5C-1,323 fathoms; most 
abundant from 100-200 fathoms. 
For other localities, see Bull. M. C. Z., V,, No. 9, p. 188, 1878 ; VIII., No. 2, p. 73, 1880. 
PL VII., PL VIII 
Many of the specimens of this species dredged in the Caribbean, off the 
Windward Islands, are much larger than the small specimens from Avhich the 
species was first described. (PI. VII. Fig-. 1.; PI. VIII. Figs. 1-6.) Quite a 
number of specimens measured 18 mm. in diameter and a few 28 mm. This 
species, however, does not seem to attain the size of the large C. Maillardi. 
When alive it is most brilliantly colored, the test varying from a rich light 
chocolate in the interambulacra to the brilliant orange or yellow ambulacral 
areas. The primary radioles vary greatly in color, from a delicate straw, 
often nearly white, to a bright carmine or orange, the base of the spines 
being usually colored and the shaft more or less irregularly banded. 
On Plate VIII. are given figures of specimens of different sizes, show- 
ing the changes they pass through due to growth. The larger specimens 
(PI. VIII. Figs. 1-6), when compared with specimens of C. Maillardi of the 
same size, show that the Florida species differs from it in having a larger 
anal system, in the shape of the genital and ocular plates, which is quite 
different, being nearly triangular in the Florida species, in having a much 
wider bare interambulacral area, and comparatively larger primary ambu- 
lacral tubercles, concentrated nearer the ambitus ; these tubercles do not 
extend to the genital ring, as they do with C. Maillardi in specimens of the 
same size. 
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