536 BULLETIN 82, UNITED STATES NATIONAL MUSEUM VOLUME 1 



proportionatelj' slightly longer than those of P,. P3 is 10 mm. long, with 17 to 19 seg- 

 ments, a little stouter than Po at the base but tapering more gradually and stiffened, 

 and without the flagellate tip of the two preceding pinnules. The segments become 

 about twice as long as broad on the fifth, and three times as long as broad distally. 

 The sixth to tenth segments bear a slender and fusiform gonad. The following pin- 

 nules are similar to P3. Pg is 12 mm. long, with 22 segments, bearing a gonad on the 

 fourth to ninth. The distal piimulcs are about 18 mm. long, with about 27 segments, 

 most of which are about twice as long as broad, the outermost about three times as 

 long as broad. The segments of the middle and distal pinnules have finely spinous 

 distal ends. 



The disk is naked. 



The color (in alcohol) is brownish white, the pinnules purphsh, becoming distally 

 purple with the articulations narrowly white. 



Locality. — Africana station 759; off the west coast of Cape Province, South Africa 

 (lat. 30°15' S., long. 14°5' E.); 461 meters [A. H. Clark, 1952] (1, Univ. Cape Town). 



Genus EUMORPHOMETBA A. H. Clark* 



Antedon (part) P. H. Carpen'teb, Challenger Reports, Zoologj-, vol. 26, pt. 60, 1888, p. 188, and 

 following authors. 



Thaumatometra (part) A. H. Clark, Proc. Biol. Soc. Washington, vol. 21 1308, p. 128. 



Eumorphometra A. H. Clark, Bull. Inst. Ocfianogr., Monaco, No. 294, 1914, p. 6 (spinosity the result 

 of the coldness of the habitat; nomen nudum) ; Internat. Rev. gesamt. Hydrobiol. und H ydrogr., 

 vol. 6, 1914, pp. 5 and following (represents, in part, Zenometra of the Atlantic; range); Die 

 Crinoiden der Antarktis, 1915, p. 114 (in key to the genera of Zenometrinae), p. 117 (synonymy; 

 diagnosis; type species E. concinna; range), p. 160 (relationships), p. 182 (represents, in part, 

 Zenometra in the Indo- Pacific) ; Journ. Washington Acad. Sci., vol. 7, 1917, No. 5, p. 127 (referred 

 to the Zenometrinae) ; No. 16, p. 510 (in key; range) ; Unstalked crinoids of the Siboga-'Exped., 

 1918, p. 223 (in key; range), p. 232 (key to the included species); The Danish Ingolf-Exped., 

 vol. 4, No. 5, Crinoidea, 1923, p. 52 (in key). — Pelsbneer, Bull. Soc. Zool. France, vol. 53, 1928, 

 p. 172 (parasitized by Eulima capensis [error]). — Ekman, Tiergeographie des Meeres, 1935, 

 p. 307. — A. II. Clark, Sci. Rep. Australasian Antarctic Exped. 1911-14, ser. C, vol. 8, pt. 4, 

 1937, p. 6. — John, Proc. Linn. Soc. London, sess. 149, pt. 2, 1937, p. 87 (discussion of species); 

 Discovery Reports, vol. 18, 1938, pp. 130, 152; Rep. B.A.N. Z. Antarctic Res. Exped. 1929-31, 

 ser. 3, vol. 4, pt. 6, 1939, p. 202. 



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

 with the cirrus sockets arranged in 10 or 15, rarely 20, irregular columns not separated 

 into radial groups but all crowded; the peripheral cirri have 20 to 40 segments, of 

 which the longest are from half again to almost twice as long as broad and the outer 

 are broader than long with shght dorsal keels ; the elements of the IBr series and the lower 

 brachials are not in lateral contact and their dorsal surface is usually covered with fine 

 spines; all the pinnules are present; Pi and Pj are usually similar, Pj a Uttle shorter, 

 both with less than 15 segments, of which all but the basal are longer than wide; at 

 least two of the species are viviparous, mature females of the others are unknown. 



Tijpe species. — E. concinna A. H. Clark, 1915. 



Oeographical range. — Shores of the Antarctic continent and the vicinities of Maxion 

 Island, the South Shetlands and Shag Rocks. 



Bathymetrical range. — From 177 to 490 (?610) meters. 



Remarks [by A.M.C.]. — I have not seen an example of the type species — E. con- 



*See also Addenda (p. 837) under 1963. 



