276 Mr. J. E. Gray’s Synopsis of 
1. Cuxcira, Agassiz. ; 
Culcita Schmideliana. Asterias Schmideliana, Retz. Naturforscher, 
xvi. t. 1. Ast. placenta. Ast. discoidea, Lam. 
Inhab. Lord Hood’s Island, on reefs. H. Cuming, Esq. 
Bright orange when alive, when in the water very convex. 
** Body pentagonal, formed of variously shaped, regularly arranged, 
externally granular ossicula. 
2. PENTACEROS. 
Body convex above, margin with 2 rows of large spine-bearing 
tesseree. 
a. Back formed of irregular elongated ossicula, apparently reticu- 
lated ; the spines with enlarged bases, interspaces closely punctured. 
1. Pentaceros grandis, Seba, t. 8. f. 1. Arms very broad, as wide 
as long at the base, only half as long as the width of the body. 
Diam. 17". 
Inhab. 
2. Pentaceros reticulatus. Asterias reticulata, Linn. Arms rather 
broad, nearly as long as the width of the body ; back convex. Mon- 
strosity 4-lobed, Rumph. Mus. t. 15. f. D. . 
Inhab. West Indies, Barbadoes. Ralph Green, Esq. 
3. Pentaceros gibbus, Linck, t. 23.f.36. Seba, iii. t. 7. f. 1. Arms 
rather shorter than the width of the body, back depressed. 
Inhab. West Indies and St. Vincent’s. Rev. L. Guilding. 
See also Pentaceros lentiginosus, Linck, 25. t. 41, 42. f. 72. Ast. 
pentacyphus, Retz., with smaller spines and a nearly spineless mar- 
gin; and 2. Pentaceros horridus, Linck, t. 25. f. 40. 
4. Pentaceros Cumingii, Gray. The arms rather narrow, nearly as 
long as the diameter of the body; marginal spines few, small; back 
rather depressed, with conical protuberances, bearing small spines. 
Diam. 12". 
Inhab. Punta Santa Elena. Rocky ground 12 or 18 fathoms. 
H. Cuming, Esq. 
Perhaps the young of a much larger species. 
5. Pentaceros hiuculus, Linck, t. 26. f.41. Ast. nodosa, a. Lamk. 
Arms rather narrow, nearly as long as the width of the body, with 
a single series of blunt tubercles; back rather depressed, with a 
central large tubercle, on each angle of the centre. 
Inhab. Isle of France. Dr. W. E. Leach. 
In Linck’s figure the spines are rather larger than in our speci- 
mens of nearly the same size. 
6. Pentaceros Chinensis. Rays elongated, nearly as long as the 
width of the body, with small blunt marginal tubercles ; back high, 
with 4 or 5 small central tubercles, and a very large blunt tubercle at 
each angle. 
Inhab. China. J. Reeves, Esq. 
The central dorsal series of tesseree are not armed with spines; are 
they so in larger specimens ? 
