172 HAWAIIAN AND OTHER PACIFIC ECHINI. 



Paraster compactus. 



Koehler, 1914. Ech. Indian Mus. Spat., p. 180. 



Based on three small, damaged specimens, without spines or pedicellariae, 

 the status of this species must be considered dubious. The fact that two of the 

 specimens were from only 20 fms. on the coast of Madras, while the third and 

 best preserved was from 599 fms. in the Bay of Bengal is worthy of special note. 



Paraster florigerus. 



Hemiaster florigerus Studer, 1880. Monatsb. Berlin Akad. Wiss., p. 882. 



This species is based on a single, small (24 mm. long) individual, from an 

 unrecorded locality. The absence of a lateroanal fasciole is a serious obstacle 

 to placing it in Paraster but in view of our ignorance concerning the form it 

 may remain here for the present. 



Prymnaster. 



Koehler, 1914. Ech. Indian Mus. Spat., p. 187. ^ 



Type, Prymnaster angulatus Koehler, 1914, op. at., p. 188. 



It is difficult to avoid the feeling that this genus is based on a growth-stage 

 of Paraster, but since so careful and skilled a zoologist as Dr. Koehler vouches 

 for it, it must for the present be accepted. 



Key to the Species of Prymnaster. 



Width of test .80-.90 of length; height .66-.80 length angulatus. 



Width of test .80 of length; height less than .60 length inveUiqatori*. 



Prymnaster angulatus. 



Koehler, 1914. Erh. Indian Mus. Spat,, p. 188. 



This species is based on thirteen specimens, of which the largest is only 

 20 mm. long. They were taken by the Investigator in the Laccadive Sea in 

 56-58 fms. 1 



'By an unfortunate misprint the station is given by Koehler M 247 and the latitude as I 

 From the context it is possible to determine that the station was 942 and the latitude 17 c 27 N 



