350 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



Antedon milberti VON GRAFF, Challenger Reports, Zoology, vol. 10, pt. 61, 1887, p. 1 (Padau Bay, 

 Mergui Archipelago; myzostomes) . BELL, Proc. Zool. Soc. London, 1888, p. 389, footnote 5 

 (collected by Anderson at Mergui). P. H. CARPENTER, Challenger Reports, Zoology, vol, 26, 

 pt. 60, 1888, p. 194 (Challenger stations 203, 212; Padan Bay), pi. 35, figs. 4-6; Journ. Linn. 

 Soc. (Zool.), vol. 21, 1889, p. 304 (specific formula), p. 310 (King Island, Mergui), pi. 27, figs. 6, 

 7 (proximal pinnules). HARTLAITB, Nova Acta Acad. German., vol. 58, No. 1, 1891, pp. 81, 

 113 (Atjeh, Sumatra). CHADWICK, in Herdman, Rep. Ceylon Pearl Oyster Fisheries, vol. 2, 

 Suppl. Rep. 11, 1904, p. 153 (occurs at Ceylon), p. 154 (stations i and LVII; characters). 

 HAMANN, Bronns Klassen und Ordnungen des Tier-Reichs, vol. 2, 1907, Abt. 3, p. 1580 (part; 

 listed). HARTLAUB, Mem. Mus. Comp. Zool., vol. 27, 1912, pp. 377, 378 (specimen from Atjih, 

 Sumatra; notes). 



Antedon laevissima (part) BELL, in Gardiner, Fauna and geography of the Maldive and Laccadive 

 Archipelagoes, vol. 1, 1902, p. 224. 



Himerometra milberti (part) A. H. CLARK, Smithsonian Misc. Coll., vol. 50, 1907, p. 356 (listed). 



Himerometra molleri A. H. CLARK, Proc. Biol. Soc. Washington, vol. 21, 1908, p. 222 (description; 

 "Indian Ocean"; also Straits of Malacca). 



Amphimetra molleri A. H. CLARK, Proc. Biol. Soc. Washington, vol. 22, 1909, p. 7 (listed); Vid. 

 Medd. Naturh. Forening K0benhavn, 1909, p. 156 ("Indian Ocean"; Singapore; Straits of 

 Malacca; description); Notes Leyden Mus., vol. 33, 1911, p. 181 (synonymy; Atjeh; description 

 of the specimen) ; Crinoids of the Indian Ocean, 1912, pp. 34, 37, 40 (identity of previous records) , 

 p. 112 (synonymy; summary of published records), p. 316 (Y6, Burma); Smithsonian Misc. 

 Coll., vol. 61, No. 15, 1913, p. 24 (Java Sea; ?Brazil); Unstalked crinoids of the <Si6o0a-Exped., 

 1918, p. 82 (in key; range), p. 84 (references; localities from which known); Journ. Linn. Soc. 

 (Zool.), vol. 36, 1929, p. 640 (80 miles northwest of Penang, 40 fathoms; Singapore, 7 fathoms; 

 notes); Treubia, vol. 14, livr. 2, 1933, p. 207 (2 specimens with 11 arms), p. 208 (not included 

 in the Siboga collection), p. 213 (north of central Java; off Cape Jabung; near Deli; near Olehleh; 

 notes). GISLEN, Kungl. Fysiogr. Sallsk. Lund Forh., vol. 7, No. 1, 1936, p. 3 (Macclesfield 

 Bank), p. 4 (French Indochina), p. 5 (range), p. 10 (localities; notes). 



Amphimetra laevissima (part) A. H. CLARK, Proc. Biol. Soc. Washington, vol. 22, 1909, p. 7 (listed); 

 Crinoids of the Indian Ocean, 1912, p. 112 (North Borneo). 



Antedon molleri A. H. CLARK, Vid. Medd. Naturh. Foren. K0benhavn, 1909, p. 117 (Liitken, MS.-= 

 Amphimetra molleri). 



Alecto molleri (Lutken, MS.) A. H. CLARK, Vid. Medd. Naturh. Foren. K0benhavn, 1909, p. 156 

 (name found with the type specimen of Amphimetra [Himerometra] molleri). 



Amphimetra milberti A. H. CLARK, Mem. Australian Mus., vol. 4, 1911, p. 767 (records from Mergui 

 Archipelago and Borneo); Crinoids of the Indian Ocean, 1912, p. Ill (part; Panay; Zamboanga; 

 Padan Bay; Ceylon); Smithsonian Misc. Coll., vol. 61, No. 15, 1913, p. 24 (part; Challenger 

 stations 203, 212). H. L. CLARK, Spolia Zeylanica, vol. 10, pt. 37, 1915, p. 93 (occurs at Ceylon; 

 from A. H. Clark, 1912). 



Amphimetra ensifer BOONE, Bull. Vanderbilt Marine Mus., vol. 7, 1938, p. 110 (3.2 miles south- 

 southeast of Pulo Telagra), p. 122 (details of locality; notes; the distribution, references, etc., 

 refer to A. ensifer). 



Diagnostic features. The cirri are stout, curved throughout, with 24-50 short 

 subequal segments, which are two to three times as broad as long; dorsal spines are 

 developed before the eighth segment; the arms are up to 150 mm. in length; P 2 has 

 18-21 segments. 



Description. The centrodorsal is thick discoidal, with a moderately large flat 

 polar area. The cirri are marginal and are arranged in one and a partial second 

 irregular rows. 



The cirri are XVI, 34-37, moderately stout, 20 mm. in length. All the segments 

 are subequal, about twice as broad as long, very slightly shorter basally and veiy 

 slightly longer distally. The sixth and following segments bear small sharp-pointed 



