496 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



KEY TO THE SPECIES OP COKOXASTEK HEKEIN" DESCRIBED. 



a^ Rays 11 ; 1 adambulacral spine ; adambulacral furrow pedicellariae slender, 

 the tips of jaws not conspicuously crossed ; abactinal forcipiform pedicel- 

 lariae with 5 or 6 lateral teeth in one row; the large major unguiculate 

 pedicellariae with proximal half abruptly narrowed voUellatus, p. 496. 



a" Rays 10; 2 adambulacral spines; adambulacral furrow pedicellariae fairly 

 stout, the tips of jaws conspicuously crossed ; abactinal forcipiform pedicel- 

 lariae with 12 or more lateral teeth in 2 series proximally ; proximal third 

 of major unguiculate pedicellariae narrowed halicepns, p. 497. 



CORONASTER VOLSELLATUS (Sladen). 



Plate 135, figs. 4, 4a ; plate 151, figs. 2, 2a-c. 



Asterias (Stolasterias) volsellata Sladen, 18S9, p. 584, pi. 107, figs. 1-4. 

 Heterastcrias volsellata Veeeill, 1914a, pp. 27, 47. 

 Coronaster voUellatus Fishek, 1917a, p. 25. 



This species has been fully described and figured by Sladen in the 

 Challenger report. The specimens collected by the Albatross agree 

 in all essential particulars with the type. I have figured the pedicel- 

 lariae as they differ from those of halicepus, described below. The 

 small pedicellariae arming the sheaths of the abactinal and marginal 

 spines are smaller than those of halicepus, averaging about 0.45 mm. 

 in length. In addition to 2 terminal teeth each jaw has usually 5 

 small teeth in a single series along the inner side. The forficiform 

 pedicellariae from the ambulacral furrow are about 1.25 mm. long, 

 and are quite slender, the tips of the jaws not crossing conspicuously. 

 Similar but smaller pedicellariae occur scattered over the integument 

 among the papulae, and on the trabecular ridges of the skeleton. The 

 unguiculate major pedicellariae are longer than those of halicepus, 

 and are narrowed into a longer proximal portion, forming a sort of 

 wrist to the miniature hand. 



Type.— In the British Museum (Natural History). 



Type-locality.— ^e,^v Cebu, Philippine Islands, 95 fathoms. 



Dhtrihution.—Vh\\\^]i'm% Islands, 95 to 165 fathoms, on sand. 



Specimens examined.— Four, from the following Philippine sta- 

 tions : 



Section 5226, 9.5 miles southwest Corregidor Light, Luzon, no 

 depth or bottom recorded ; 1 specimen. 



Station 5391, between Samar and Masbate, 118 fathoms; 1 speci- 

 men. 



Station 5393, between Samar and Masbate, 136 fathoms, hard 

 sand, 1 specimen. 



Station 5417, between Cebu and Bohol, 165 fathoms, gray mud, 

 sand, bottom temperature 54.4° F. ; 1 specimen, incomplete. 



Remarks. — The stomach of a specimen from station 5391 contained 

 portions of se\eral small shrimps and a small fish. The very nu- 



