684 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



mentioned incidentally a third subspecies which he called Comanthus (Vania) 

 parvicirra 7 vaniipinna, to which he tentatively referred a specimen from Bock's 

 station 63. 



In 1923 Dr. H. L. Clark recorded 7 specimens of this species from Wooded Isle 

 in the Abrolhos group, Western Australia, and in 1927 Doctor Gislen recorded 9 

 specimens collected by Dr. Th. Mortensen in Japan in 1914, placing 3 under Coman- 

 thus parmcirra a comasteripinna and 6 under Comanthus parvicirra 7 vaniipinna. 



DOUBTFUL AND INDETERMINABLE SPECIES 



YOVNQ C0MASIEKID3 FEOM THE BONIN ISLANDS 



Dr. Torsten Gislen has described the following young comasterids which were 

 collected by Dr. S. Bock in the Bonin Islands: 



COMATELLA, sp. 



Locality. — Two miles west of Higashijima; 164 meters; sand and broken shells; 

 August 7, 1914. 



Notes. — ^The cirri are XI, 8-9, from 2 to 2.5 mm. long. The third segment is 

 two and one-half times as long as broad. The terminal claw is curved, and is longer 

 than the penultimate segment. 



The basals project between the radials as small corners. The radials are narrow 

 bands. The IBri is three times as broad as long. The 10 arms are about 15 mm. 

 long. The edges of the brachials are somewhat everted and spiny. The inter- 

 syzygial interval is 3 muscular articulations. 



Pi has comb of 5 or 6 teeth. P2 and P3 are absent. 



The disk is smooth, dark brown in color. The mouth is central. The anal tube is 

 small and is not papillated. 



COMATELLA, sp. Jut., OK THE YOUNG OF A LARGE COMISSIA, sp. 



Locality. — East of Chichijima; 146 meters; July 31, 1914. 



Notes. — In one specimen the cirri are XIX, 14-16, from 6 to 8 mm. long. The 

 fourth segment is the longest, two and one-half times as long as broad. Dorsal 

 spines are present from the fourth segment onward. 



The radials are narrow and bandlike. The IBri are four times as broad as long 

 and are free laterally. The IBr2 (axillaries) are twice as broad as long, and they form 

 with the IBri a low sjmarthrial tubercle. 



The 10 arms are 45 mm. long. The second brachials are twice as long exteriorly 

 as interiorly. The distal brachials are half again as long as broad, feebly spiny, with 

 the ends not everted. 



The intersyzygial interval is 3 muscular articulations. 



Pi is 5.5 mm. long and is composed of from 25 to 30 segments, of which 10 bear 

 teeth; it is strongly rolled up distally. P2 bears a comb. P3 is usually and P4 is 

 always absent. 



The mouth is subcentral, and the anal cone is small and marginal. The disk is 

 4 mm. in diameter. 



