Clark — New Recent Indian Crinouh. 149 



Subfamily CHARITOMETRIN^. 

 Genus PAClIYLO:\rKTr;A A.H.Clark. 



Pachylometra invenusta sp. nov. 



Type.— In collection of Indian Mnseuni ; 11° W W N. lat., 93° 16^ 00^' 

 E. long. ; 569 fathoms. 



This species i.s in general similar to P. macilenta, bnt differs in many 

 details. 



Cirri x.xiii, 20-2J, 30 mm. to 34 mm. long, rather slender as in P. 

 macilenta ; the proportions of the joints are the same as in that species, 

 but the distal edges of tlie joints are slightly more thickened, giving the 

 cirri as a whole a somewhat rougher ajipearance. 



Twelve arms (in the type) 170 mm. long, slender, as in P. niacileuta : 

 the two II Br series are 4 (3 + 4) ; the ornamentation of the i Br and ii Br 

 series is as in that species ; i Br series, first two brachials exteriorly and first 

 three interiorly, in close apposition and shaqily flattened laterally, the 

 apposed edges somewhat everted ; brachials with the same proportions as 

 in P. macilenta ; but the proximal sub-quadrangular brachials have the 

 distal ends thickened and everted, and the remaining l)racliials have rather 

 prominently overlapjiing distal edges. The distal intersyzygial interval 

 is four or five oblique muscular articulations. 



The pinnules resemlile those of P. macilenta, Init the genital 2>innules 

 are somewhat more swollen than in that species. 



Family ANTEDONID.E. 

 Gknus P-SiATHYROMETRA A. H. Clark. 



Psathyrometra gracillima sj). ik^v. 



'&• > 



Type. -Cat. No. ^-°i'-'^, Indian Museum ; 19° 35' N. lat., 92° 24' E. long. 

 272 fathoms. 



This species is even smaller and more delicate than P. mira, heretofore 

 the smallest known species of the genus. 



Centro-dorsal sharply conical, 4 mm. broad at the base and 2.5 mm. 

 high, separated into five radial areas l>y five interradial furrows which 

 are somewhat broader than the adjacent cirrus sockets ; eight to ten well 

 separated cirrus sockets in each radial area, arranged approximately in 

 four columns, though apparently more or less irregular. 



Cirri xi-i,, about 25, 35 mm. long, slender, smooth and delicate. 



The ten arms which, except for their slenderness, resemble those of 

 related species, are about 100 mm. long. 



Genxjs TRICHOMETRA a. H. Clark. 



Trichometra obscura sp. nov. 



Type.— Cat. No. Z. E. V. ^V^, Indian Museum; 7° 17' 30" N. lat., 

 76° 54' 00" E. long.; 430 fathoms. 



Centro-dorsal conical, the sides slightly convex, 3.50 mm. broad kt the 

 base and 3 mm. high. 



Cirri lacking. 



