456 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



The cirri are XII, 10-11, 6 mm. long. They resemble the cirri of C. distinda 

 but are rather weaker and more slender, and the longest segments are slightly longer, 

 about two and one-half times as long as broad. 



The IIBr series are 4 (3 + 4). There is no further division. 



The 20 arms are 65 mm. in length, and resemble those of C. distinda. The 

 distal edges of the brachials are rather strongly produced and spinous. 



Terminal combs occur sparsely on the middle and distal pinnules. 



The color in alcohol is brownish white, with a median brown line on the division 

 series and arm bases and occasional spots of brown on the arms. 



Notes. — A young specimen from Singapore has 13 arms 35 mm. in length, and 

 the cirri XII, 8-10, from 3.5 to 4 mm. long. 



The specimen from the Danish expedition to the Kei Islands station 26 is small 

 with 22 arms 40 mm. long. Of the 10 IIBr series 7 are 2 and 3 are 4 (3 + 4). Of 

 the 2 IIIBr series one is 4 (3 + 4), externally developed, and the other is 2, internally 

 developed. The specimen from station 30 has 19 arms 80 nmi. long, wdth 9 IIBr 

 4 (3 + 4) series. The cirri are V, 11. Of the 2 examples from station 53, one has 20 

 arms 50 mm. long, and the other is small. The specimen from station 54 has 20 

 arms 65 mm. long; the cirri have 14-15 segments. 



Localities.— Singapore; Svend Gad, AprU 16, 1907 [A.H. Clark, 1909] (7, U.S.N.M., 

 E. 1087, type; C. M.). Same, October 23, 1910 (1, C. M.). PL 51, figs. 150, 151. 



Danish expedition to the Kei Islands; Dr. Th. Mortensen; station 26; about 90 

 meters; sand; April 16, 1922 (1); station 30; about 40 meters; sand and shells; April 

 18, 1922 (1); station 53; 85 meters; sand and coral; May 9, 1922 (2); station 54 (1). 



Geographical range. — From Singapore to the Kei Islands. 



Bathymetrical range. — From the shore line down to about 90 meters. 



Remarks. — In 1909 I failed to distinguish this form from Comanthus parvicirra, 

 and the 7 specimens which I had exa:nined were recorded as parvicirra {"rotalaria") 

 in my report on the crinoids of the Copenhagen Museum. 



COMASTER, sp. 



ComastcT, sp., A. H. Cl.\rk, Smiths. MisceU. CoU., vol. 61, No. 15, 1913, p. 69. 



Locality. — Macclesfield Bank, 42-46 and 47 meters. 



Remarks. — In the British Museum there is from the lesser depth a specimen of 

 some species of Comaster with 15 arms 55 mm. long. There are 3 IIBr series, of 

 which 2 bear each a single IIIBr series. The cirri are VII, but apparently will be 

 lost when the animal is fuUy grown. 



There are 2 similar but smaller specimens from the greater depth. 



COMASTER, sp. 



Locality. — Danish expedition to the Kei Islands; Dr. Th. Mortensen; station 54. 

 Remarks. — A small 10-armed specimen of a species of Comaster from this station 

 probably represents C. tenella. 



COMASTER, sp. 



Locality. — Tahiti, Society Islands. 



Remarks. — I have examined some detached arms of a species of this genus which 

 are in the Munich Museum. 



