756 BULLETIN 82, UNITED STATES NATIONAL MUSEUM VOLUME 1 



long as broad, the fourth is half again as long as broad, and the following become exceed- 

 ingly elongated with swollen, produced and overlapping spinous distal ends. P 2 is stouter 

 than PI, composed of 11 or 12 segments, of which those beyond the third are excessively 

 elongated, becoming exceedingly slender distally; the fourth to seventh segments bear a 

 large gonad. 



Notes. A specimen from station 59 of the Danish Expedition to the Kei Islands 

 [named and described in MS by Mr. Clark] has the centrodorsal very low, conical, with 

 the sides making a very broadly obtuse angle with each other. Over a rather large 

 polar area the cirrus sockets are more or less completely obliterated. Around the base 

 the sockets are very closely crowded, with about six corresponding to each radial along 

 the edge. Towards the apex the sockets are smaller. The cirri number about LX, 

 10-13, up to 10 mm. long. The second segment is about as long as broad, the third is 

 nearly or quite three times as long as broad in the middle, the fourth to sixth are five or 

 six times as long as their median widths. The following segments rapidly decrease in 

 length so that the antepenultimate is about twice as long as broad and the penultimate 

 is scarcely as long as broad. The elongate earlier segments have the dorsal and ventral 

 profiles concave and the shorter outer segments also have the dorsal and ventral sides 

 divergent at least in the outer half. The opposing spine is minute and terminal. The 

 terminal claw is about as long as the penultimate segment, rather stout and moderately 

 curved. [NOTE BY A.M.C.: Unfortunately the remainder of this manuscript descrip- 

 tion is lost.] 



Localities Siboga station 52; south of Java (lat. 903'24" S., long. 11056'42" 

 E.); 959 meters; globigerina ooze; April 20, 1899 [A. H. Clark, 1912, 1918] (1, Amster- 

 dam M.). Type locality. 



Danish Expedition to the Kei Islands station 59; 385 meters; coral; May 12, 1922 

 (1, C.M.). 



THAUMATOMETRA ALTERNATA (P. H. Carpenter) 



Antedon tenuis P. H. CARPENTER, Quart. Journ. Micr. Sci., new ser., vol. 27, 1887, p. 386 (Challenger 

 sta. 170; sacculi; nomen nudum). A. H. CLARK, Proc. U.S. Nat. Mus., vol. 34, 1908, p. 497. 



Antedon alternate, P. H. CARPENTER, Challenger Reports, Zoology, vol. 26, pt. 60, 1888, p. 179 (descrip- 

 tion, in part; stas. 1G9, 170A [specimen from sta. 218 = Fariometra io; specimens from sta. 236= 

 T. parva]), pi. 18, figs. 1-3 (pi. 32, figs. 5, 7-9= T. parva; fig. 6 = Fariometra io). FARQUHAR, 

 Proc. Linn. Soc. New South Wales, vol. 12, pt. 3, 1898, p. 305. THOMPSON, Proc. Roy. Soc. 

 Edinburgh, vol. 22, 1899, p. 322 (distribution and its bearing on bipolarity). HUTTON, Index 

 faunae Novae Zealandiae, 1904, p. 290. A. H. CLARK, Smithsonian Misc. Coll., vol. 50, pt. 3, 

 1907, p. 353 (listed). HAMANN, Bronn's Klassen und Ordnungen des Tier-Reichs, vol. 2, Abt. 3, 

 1907, p. 1579 (listed). A. H. CLARK, Proc. U.S. Nat. Mus., vol. 34, 1908, p. 457 (type locality 

 determined as Challenger sta. 169); Notes Leyden Mus., vol. 34, 1912, p. 146 (Challenger Report, 

 pi. 32, fig. 6=Trichometra delicata [Fariometra io]); Crinoids of the Indian Ocean, 1912, p. 33 (of 

 P. H. Carpenter, 1888=Thaumalometra alternata, in part); Smithsonian Misc. Coll., vol. 61, No. 

 15, 1913, p. 80 (Challenger Report, pi. 32, fig. &=Trichometra delicata [Fariometra io]; pi. 32, figs. 

 5, 7-9= T. cypris [parva]); Unstalked crinoids of the Siboja-Exped., 1918, p. 252 (specimen from 

 Challenger sta. 2l8 = Nepiometra [Fariometra] io). 



Thaumatometra alternata A. H. CLARK, Proc. Biol. Soc. Washington, vol. 21, 1908, p. 128 (listed); 

 Notes Leyden Mus., vol. 34, 1912, p. 149 (specimen from Challenger sta. 170A compared with 

 T. thysbe) ; Crinoids of the Indian Ocean, 1912, p. 33 ( = Antedon alternata P. H. Carpenter, 1888), 

 p. 246 (synonymy; New Zealand [other localities refer to T. cypris [parva] and Nepiometra 

 [Fariometra] io; probably includes more than one species) ; Smithsonian Misc. Coll., vol. 61, No. 15, 

 1913, p. 65 (published references to specimens in the B.M.; Challenger stas. 169, 170A); Unstalked 

 crinoids of the Siboja-Exped., 1918, p. 255 (in key; range), p. 256 (references). GISLEN, Ark. 



