PAKT 5 



A MONOGRAPH OF THE EXISTING CRINOIDS 



667 



FIGURE 38. Boleomctra clio (A. H. Clark), holotype: a, Lateral view of calyx; b, Pj; 



c, PZ; d, cirrus. 



slightly constricted in the middle, up to about three times as long as wide. P 2 is much 

 shorter, 6 to 7 mm. in length, and stouter, especially basally, with 13 to 15 tapering 

 segments, of which the first three are short and the remainder greatly elongated. The 

 following pinnules are a little stouter but in general similar to P 2 ; P 3 and P 4 have about 

 13 segments and measure 6 mm. in length; they bear long slender gonads; the pinnules 

 gradually decrease in length to about P 7 , then become more slender and increase in 

 length distally where they are 8 mm. long with about 20 slender segments, all of which 

 except the two basal are greatly elongated. 



Locality. Albatross station 4904; Eastern Sea, southwest of the Goto Islands; 

 Ose Saki Light bearing N. 27 E., 6 miles distant (hit. 3231'20" N., long. 12832'40" 

 E.); 195 meters; fine gray sand and broken shells; August 10, 1906 [A. H. Clark, 1907] 

 (1, U.S.N.M., 22618). 



Remarks. Only a single specimen of this species is as yet known. 



First described in the genus Antedon in 1907, this species was transferred to 

 Heliometra upon the establishment of that genus in 1908 on the basis of the relatively 

 short segments of P I( especially at the base, the relatively large size and the general 

 appearance. When the genus Cyclometra was described in 1911, clio was placed within 

 it. Later it was decided that clio is not congeneric with Cyclometra flacescens and in 

 1936 the new genus Boleometra was erected to accommodate it. 



[NOTES BY A.M.C.] It is surprising that Gislen found nothing referable to clio 

 in the collections of either Sixten Bock or Mortensen from southern Japan, including 

 Kiu Shiu. Gislen himself in 1927 made the suggestion that clio might be the young 

 of Florometra mariae, which species Mortensen had taken off southern Japan. He 

 had previously communicated this idea to Mr. Clark, as a result of which the latter 

 made some comments in this typescript, maintaining, however, that clio is distinct on 

 the grounds of differences in the texture of the brachials and on the coloration. Gis- 

 len's relatively young specimens of mariae with arm lengths of 85 and 95 mm. (55 mm. 

 in clio) do have the brachials much smoother than larger specimens but at the same 



556-62267 44 



