A. M Verrill — Hevision Genera and Species of Starfishes. 195 



This species has a much thinner disk and more slender and more 

 rapidly tapered rays with less massive plates that P. intermedins, or 

 even P. concinnus. 



The following additional species have been recorded from the East 

 Atlantic : 



Pseudarchaster annectens (Per.). 



Astrogonium annectens Per., Exp. Trav. et Talism., p. 343, pi. xxiii, fig. 5, pi. 

 • xxiv, fig. 1, 1894. 



Gulf of Gascony, 900 meters; station 2i3, 1888, 1384 meters. 

 This is very closely related to P. intermedius Sla. 



Pseudarchaster hystrix (Per.). 



Astrogonium hystrix Per., Exp. Trav. et Talism., p. 345, pi. xxiii, fig. 3, pi. 

 xxiv, fig. 2, 1894. 



Coast of Morocco, 840 meters, one example. 

 Very closely related to the preceding. 



Pseudarchaster necator (Per.). 



Astrogonium necator Per., Exp. Trav. et Talism., p. 350, pi. xxiii, figs, la, lb, 

 1894. 



Off the Azores, 1257 meters, one example. 



Pseudarchaster Aphrodite (Per.). 



Astrogonium Aphrodite Per., Exp. Trav. et Talism., pp. 342, 354, pi. xxi, fig. 

 2, pi. xiii, fig. 2, 1894. 



Coast of Sahara, 1090 meters. 



Aphroditaster gracilis Sla. 



Aphroditaster gracilis Sla., Voy. Chall., xxx, p. 117, pi. xvii, figs. 1, 2, pi. 



xviii, figs. 7, 8, 1889. 

 Astrogonium gracile Per., Exp. Trav. et Talism., pp. 342, 354, 1894. 



Off the Azores, 1000 fathoms. 



Pseudarchaster tessellatus Sla. is from off the Cape of Good Hope. 

 P. Patagonicus (Per.) is fi'om Patagonia, 283 meters. 

 P. discus Sla. is from Messier Channel, west coast South America, 

 147 fathoms. 



A few species have been described from the Indo-Pacific region : 



