10 



NATURAL HISTORY BULLETIN 



among the comatulids of the present collection by its charac- 

 teristic cirri. There are two specimens before me, each with 

 disk about 3 mm. across and arms 50 mm. long. 



Station 74. Bahamas: off Little Cat Island, 3-13 fms. 

 2 specimens. 



Stylometra spinifera 



Antedon spinifera P. H. Carpenter, 1881. Bull. M. C. Z., 9, p. 158. Hart- 



laub, 1912. Mem. M. C. Z., 27, p. 358; pi. II. 

 Stylometra spinifera A. H. Clark, 1908. Bull. M. C. Z., 61, p. 245. 



A single fine specimen of this beautiful species is all that the 

 present collection contains. Unfortunately the cirri are all 

 broken but enough is left of one to reveal the characteristic 

 features. 



Station 2. Cuba: off Havana about 2% miles, 110 fms. 

 Crinometra gracilis 



Antedon hrevipinna var, gracilis Hartlaub, 1912. Mem. M. C. Z., 27, p. 

 328; pi. XII, fig. 3. 



There are in the Iowa collection two comatulids and frag- 

 ments of a third which undoubtedly belong to the genus Crin- 

 ometra. In regard to the species of this genus, Mr. A. H. 

 Clark writes me: "Crinometra is in a perfectly hopeless con- 

 dition. The majority of the new names given by Hartlaub are 

 preoccupied in the genus Antedon as understood by him." In 

 spite of this situation, it has seemed desirable to at least place 

 the specimens before me with reference to Hartlaub 's many 

 ''varieties" of Antedon hrevipinna. One of these specimens, 

 although fragmentary, seems to answer well to the "variety 

 gracilis" and I have therefore labelled it "Crinometra gracilis 

 Hartl." The question as to whether gracilis in this usage is 

 preoccupied by Antedon gracilis may be ignored until Hart- 

 laub 's multitudinous varieties are properly identified. 



The specimen at hand has a thick, flat or slightly conical 

 centrodosal, only a little more than 3 mm. in diameter; there 

 are 10 cirri present and sockets of 3 or 4 more; the bare dorsal 

 surface of the centrodorsal is occupied by numerous bluntly 

 pointed granules or thick spinelets. The cirri have 11 or 12 



