480 A. E. Verrill — Revision of the Genera of Starfishes 



Patiria Gray, 1840 (monotypic). Type, P. coccinea Gray. 

 Cape Good Hope ; E. Africa (not Patiria Per. nor of Sladen). 



b. Ventral plates have a large solitary spine, or sometimes two. 



Dorsal plates nearly as in Patiria, but with fewer small 

 ossicles. 



Patiriella Ver., gen. no v. Type, P. regularis Ver. New Zea- 

 land ; Australia, etc. 



bb. Ventral plates have a fascicle of slender spines. 



Asterinopsis Ver., gen. nov. Type, A. penieillaris (Lam.). 

 Red Sea ; E. Indies ; Japan ; Australia. A. pilosa (Per.), off 

 Dominica I. ; A. lymani (Per.), off Barbados. 



xx. Two-bladed pedicellarise on dorsal plates. 



JEnoplopatiria Ver., nov. Type, E. marginata (Hupe)=:^4. 

 stellifera (Mob.) = ^4. braziliensis Ltk. = ,4. mi7iuta (M. & Tr., 

 non L.). Brazil ; W. Indies ; Canary Is. ; W. Africa. 



(7(7. Margin of disk and rays not thin ; rays elongated and 

 rounded ; dorsal plates imbricated and spinulated. 



c. Adambulacral plates have two or more fan-like rows of super- 



imposed webbed spines on the furrow margin, and an outer 

 group of many spinules. Ventral plates covered with 

 numerous small spinules ; principal dorsal plates imbricated, 

 lunate, finely spinulated, with a small one proximal to papu- 

 lar pore. 



Nepanthia Gray. Type, N~. maculata Gray. E. Indies. In- 

 cludes, also, JV. brevis Per. E. Indies, etc. 



cc. Adambulacral plates with a single inner comb and an outer 

 fan of spines. Ventral plates with a central roundish cluster 

 of many spines. Dorsal plates nearly as in Patiria y with 

 many interposed small ossicles. 



Callopatiria Ver., gen. nov. Type, C. bellula Sladen, as Pati- 

 ria. Cape Good Hope. C. obtusa (Gray, non Ver.). Panama. 



BB. Principal dorsal plates are not all imbricated. 

 F. Rays elongated and rounded. 



d. Principal dorsal plates contiguous ; notably enlarged, rounded 



or elliptical, with a central group of spinules and marginal 

 series of pedicellariae. Ventral plates with a fan of several 

 spines. 



Allopatiria Ver., gen. nov. Type, A. ocelli/era (Gray), as 

 Patiria. Australia. 



dd. Principal dorsal plates not greatly enlarged, roundish, sepa- 

 rated by small, roundish ossicles around papulae ; all spinu- 

 lated. Ventral plates crowdedly spinulated. 



