NO. IGOl. SEVENTEEN NEW SPECIES OF CRIN0ID8— CLARK. Q/^l 



long, second somewhat longer, third about as long as broad, the fourth 

 similar, Ihe following vory gradually increasing in lengtli to about 

 iialf again as long as broad, and bcc;)ining scpiarish again in the 

 (oruiinal -i or 5; 1\, 15 mm. long, moderately stout and very stiti' and 

 spine-like, with about 20 joints, the first about twice as broad as long, 

 the second slightly longer, the third nearly half again as long as 

 broad, the remainder about twice as Ion"' as broad: be<>:inninir on the 

 second join.t there is a faintly indicated, broadlj'^ rounded keel running 

 along the middle of the outer side, as on P, ; on the third and. follow- 

 ing joints the distal dorsal edge projects in the line of this keel in a 

 narrow fringe of spines, Avhich broadens on succeeding joints, the 

 spines at the same time becoming longer, aiul is supplemented by 

 additional spines on the ventro-lateral angles of the joints; P.. similar 

 to P.,, usually about 1 nnn. shorter; P^ 10 nnn. long, resembling P. 

 and P.., though not quite so stiff, Avith 15 joints; P^ and following 

 pinnules very sloAvly decreasing in length and stiffness, at the same 

 time becoming more slender, with the spines on the distal ends of the 

 joints less and less pronounced; P,, is 8 nnn. long and Pj. is 7 nun. 

 long, each with 15 joints; from this point the pinnules very gradually 

 increase to 10 mm. in length distally, the distal pinnules being slender, 

 comparatively little'stiffened, with 20 to 22 joints, which have moder- 

 ately everted ends armed with fine spines; the distal pinnules are 

 somewhat compressed laterally. 



Type-specimen.— C'At No. 9C., Indian Museum; lat. 1-1° 04' 30" 

 N.; long. 93° 51' 00" E. ; 11 fathoms. 



Cotijpe.— Cat No. 25-t82, U.S.N.INI. ; from the same locality. 



Genus CYLLOMETRA A. H. Clark. 



CYLLOMETRA TAPROBANES, new species. 



Centro-dorsal thin, discoidal, the bare polar area flat, 2 mm. to 3 

 mm. in diameter; cirrus sockets arranged in a single, slightly irregu- 

 lar, crowded marginal row. 



Cirri XX-XXI, 25-29, 12 mm. or 13 mm. long; flrst joint short, 

 the next about two and one-half times as broad as long, the following 

 slowly increasing in length to the fifth or sixth, which is twice as 

 broad as long, and the tenth or twelfth, which is half again as broad 

 as long, and still further increasing, so that the antepemdtimate 

 and one or tAvo of the preceding joints are about as long as broad; 

 fifth to seventh and succeeding joints with the distal dorsal edge 

 prominent, forming a low transverse ridge which sloAvly moves ante- 

 riorly, attaining a median position on about the twelfth, and grad- 

 ually narrows distally, becoming reduced to a small median tubercle 

 on the last tAvelve; opposing spine prominent, rather slender, median, 

 equal in height to about one-half the diameter of the penultimate 



