592 BULLETIN 82, UNITED STATES NATIONAL MUSEUM VOLUME 1 



A single specimen oi prolixa was recorded by Mortensen in 1932 among the col- 

 lections of the Godthaab expedition in the deep basin of Baffin Bay, west of Greenland. 



In 1932 G. P. Gorbunow published an account of the echinoderm fauna of Franz 

 Joseph Land and the Queen Victoria Sea based on work done in 1927, 1929, and 1930 

 by the motor ship Zarnitza (Elding) and the icebreaker Georgi Sedow. He recorded 

 Peliometra (sic) prolixa from two stations. In a paper on the echinoderm fauna of the 

 inshore waters of the North Island of Nova Zemblya published in 1933 he recorded 

 it from two additional stations. In a paper on the echiuoderms of the northern half 

 of the Kara Sea also published in 1933 he recorded it from 14 stations giving the locali- 

 ties, depth, character of bottom, temperature, and salinity, and also a general account 

 of its occurrence in this region. 



In 1933 Mr. A. M. Djakonov included a general account of Peliometra (sic) prolixa, 

 with a figure of the proximal portion, in his memoir on the echinoderms of the Arctic 

 seas. 



In 1935 Heding recorded the species from Kangerdlugsuak and Mikisfjord in 

 King Christian IX's Land in the southeast of Greenland, where it was collected by the 

 Scoresby Sound Committee's second East Greenland Expedition in 1932. A number 

 of pentacrinoids of conspicuously large size were also taken. 



In a report on some echinoderms from Franz Josef Land, Victoria0ya, and Hopen 

 collected on the Norwegian Scientific Expedition of 1930, published in 1935, James A. 

 Grieg noted that Poliometra prolixa had been recorded from Franz Josef Land by 

 Marenzeller, Michailovskij, and Gorbunow. 



In a report on a collection of echinoderms made by Capt. Robert A. Bartlett in 

 the seas about Baffin Land and Greenland which appeared in 1936 I recorded this 

 species from two localities off east Greenland. In a paper on additional collections by 

 Captain Bartlett published in 1940 I recorded it from one additional locality. 



Finally, in 1948, Einarsson found P. prolixa at several stations around the coasts 

 of Iceland, particularly on the north and eastern sides. They were taken on hard 

 bottoms, stones and gravel predominantly, according to Einarsson, which is contrary 

 to the majority of records of habitat. 



Genus EOMETRA A. H. Clark 



Psathyrometra (part) A. H. CLARK, Journ. Washington Acad. Sci., vol. 5, 1915, No. 3, p. 81; Die 

 Crinoiden der Antarktis, 1915, pp. 104, 107, 116, 170, 171. 



Eomelra A. H. CLARK, Proc. U.S. Nat. Mus., vol. 83, 1936, p. 248 (diagnosis; type species Psathyrometra 

 antarctica A. H. Clark, 1915.). JOHN, in Vaney and John, Sci. Res. Voy. Scotia, 1902-04, Cri- 

 noidea, 1939, pp. 668-670 (E. weddelli sp. nov.). A. H. CLARK, Mem. Soc. Cubana Hist. Nat., 

 vol. 14, No. 2, 1940, p. 140. GISLN, Rep. Swedish Deep Sea Exped., vol. 2, Zool., No. 4, 1951, 

 pp. 55, 56. 



Diagnosis. A genus of Zenometrinae in which the centrodorsal is small, conical 

 with somewhat swollen sides, about as high as broad at the base, or nearly so, and almost 

 completely covered with cirrus sockets, which are arranged in 10 closely crowded col- 

 umns of 2 or 3 each; the cirri are slender and only slightly curved distally, gradually 

 tapering to a fine point, with all the segments except the basal much elongated and 

 without dorsal processes; the elements of the IBr series and lower brachials are smooth 

 and not in lateral contact; all the pinnules are present; PI and P 2 are similar, the latter 

 the longer; P 3 and the pinnules following are much longer than P 2 . 



