NO. 15 RECENT CRINOIDS IN BRITISH MUSEUM — CLARK 7 



is flat ; the cirrus sockets are arranged in three crowded marginal 

 rows. 



The cirri are XXXIV, 14-16 (usually the latter) , 14 mm. long ; the 

 eighth is a transition segment ; the longer proximal segments are 

 nearly or quite twice as long as broad, slightly constricted centrally ; 

 the last two segments before the penultimate are about as long as 

 broad to one-third broader than long ; the outer cirrus segments are 

 very highly polished and bear small dorsal tubercles. 



The ten arms are about 90 mm. long ; the ossicles of the IBr series 

 are so closely joined that the articulation between them has all the 

 appearance of a syzygy, but they are well separated laterally; the 

 arms resemble those of the other species of Comissia; the distal 

 edges of the brachials overlap rather strongly ; syzygy ies occur 

 between the third and fourth brachials, again between the eleventh 

 and twelfth and fifteenth and sixteenth, and distally at intervals of 

 three oblique muscular articulations. 



There are terminal combs on the pinnules as far as P 4 ; the comb of 

 P 4 has fifteen or sixteen teeth, beyond which are a few segments 

 which do not bear processes ; the teeth are exceptionally long ; in P 4 

 there are only nine segments preceding the comb ; P x is 12 mm. long, 

 and bears a comb composed of twenty-five very long teeth. 



COMISSIA IGNOTA A. H. Clark 



Actinometra, sp. nov. 1884. Bell, " Alert " Report, p. 510 (1, 2). 



Comissia ignota 191 1. A. H. Clark, Proc. U. S. Nat. Mus., vol. 40, p. 17 



(1,2). 

 Actinometra pectinata Brit. Mus., MS. (1). 



1. Marie Louise Island, Amirante Group; ij fathoms; "Alert." — 

 Nine specimens, one of which is six rayed. 



This is the type locality of the species, and it was from these speci- 

 mens that the original description was drawn up. 



2. Isle des Neufs, Amirante Group; 17 fathoms; coral; " Alert!' — 

 One specimen. 



Genus LEPTONEMASTER A. H. Clark 

 LEPTONEMASTER VENUSTUS A. H. Clark 



I. Cuba. — Two specimens. 



Subfamily Comactiniin^e A. H. Clark 



Genus COMATULELLA A. H. Clark 

 COMATULELLA BRACHIOLATA (Lamarck) 



Coinatula rosea Brit. Mus., MS. (1). 

 I. Port Phillip, Victoria- — One fine specimen. 



