BEVISION OF PALEOZOIC STELLEKOIDEA. 



27 



Page. 



Trimeraster parvulus Schondorf 134 



Trochitaster plumiformis WTight=Trichotaster plumiformis. 



Uranaster Gregory 154 



U. elizse, Spencer 155 



U. kinahani (Baily) 155 



Uraster hirudo Forbes= Urasterella hirudo 188 



U. obtusus ~FoTbes=Stenaster (?) obtusus 167 



U. primsevus Forbes=PaZasmna primseva 153 



U. ruthveni Forbes= Urasterella ruthveni 187 



Urasterella McCoy 173 



Urasterella Stiirtz I8$3=Stenaster 163 



U. (?) asperrima (Salter) 187 



U. asperula (Roemer) 188 



U. (?) constellata (Thorent) 187 



U. girvanensis, new species 186 



U. grandis (Meek) 180 



U. hirudo (Forbes) 188 



U. huxleyi (Billings) 182 



U. montana (Stschurowsky) 189 



U., new species 189 



U. pulchella (Billings) 178 



U. ruthveni (Forbes) 187 



U. selwyni McCoy 188 



U. ulrichi, new species 183 



Xenaster Simonovitsch 129 



X. dispar Schondorf 131 



X. elegans Schondorf 131 



X. eucharis Schondori=Devonaster eucharis 98 



X. margaritatus Follmann=^". elegans 131 



X. margaritatus Simonovitsch 131 



X. margaritatus Simonovitsch (part)=J5T. dispar and Agalmaster grandis 131, 132 



X. (?) rhenanus (Miiller) 131 



X. simplex Simonovitsch =Spaniaster latiscutatus 96 



REMARKS ON THE DEVELOPMENT OF PALEOZOIC STELLEROIDEA. 



GEOLOGICAL. 



Distribution. This memoir treats of the following Paleozoic 

 Stelleroidea : 



Species. 



North 

 Ameri- 

 can 

 species. 



Euro- 

 pean 

 species. 



Southern 

 Hemis- 

 phere 

 species. 



Asteroidea... 

 Auluroidea. . 

 Ophiuroidea. 



Total. . . 



110 



59 



5 



174 



11 



