240 ECHINODERMA OF THE InDTAN MuSEUM, PART VH. 



Habitat. — Philippine Islands. 

 Depth. — 283-730 fathoms. 



TRICHOMETRA VEXATOR. 

 Trkhonicfra ir.mlor lf)OS. A. H. Clark, Proc. U. S. iVat. Mus. , vol. 34, p. 217. 

 Habitat. -Hawaiian Islands. 

 Depth. — 138-355 fathoms. 



TRICHOMETRA OBSCURA. 

 Trkhometra ohsoira 1909. A. H. Clark, Proc. Biol. Soo. Washington, vol. 22, 



p. 149. 



Descreption. — Centrodorsal conical, the sides slightly convex, 35 mm. 

 broad at the base and 3 mm. high. 



Fig. 45. — Trichometra obscurn. 

 Lateral view o f the type. 



Cirri lacking. 



Radials even with the edge of the centrodorsal ; IBr, very short and hand- 

 like, not quite in contact basally, the lateral edges diverging at a leather broad 

 angle ; IBr.^ almost triangular, slightly broader than long, the anterior and lateral 

 angles rather strongly produced, with a rounded posterior process incising the 

 IBr,. 



The ten arms resemble those of tlie other species of the genus, so far as may 

 be judged from the single mutilated specimen. The longest stump measures 

 9 mm. to the tenth brachial. 



The colour in spirits is white. 



IjOCaiaty.— Southwest of (Jape Comorin (7° 17' 30" N. lat., 76° 54' 00" E. 

 long.); 4^0 fathoms: bottom temperature lii^° Fahr. ] gref/miu/. — One badly broken 

 specimen. 



TRICHOMETRA PLANA, sp. nov. 

 Description.— Centrodorsal very low hemispherical, practically thin dis- 

 coidal with the edge bevelled off, 2 mm. in diameter ; in lateral view the centro- 

 dorsal appears thin discoidal with a single row of cirrus sockets, four to each 



