A MONOGRAPH OF THE EXISTING CRINOIDS 407 



assigned to the genus Selenemetra must be transferred to the genus Oxymetra, and the 

 name Selenemetra must be relegated to the synonymy of Oxymetra. 



In a paper on the crinoids of the Berlin Museum published on November 20, 1912, 

 I noted that I had examined the two cotypes of Selenemetra jinschii in that museum. 



In my memoir on the crinoids of the Indian Ocean published in 1912, I listed 

 Selenemetra jinschii, S. aranea, S. gracilipes, and S. viridis as valid species and rede- 

 scribed S. aranea. In the original description of S. tenuicirra, which was published 

 in 1912, that form was compared with S. Jinschii. 



Dr. Robert Hartmeyer in 1916 published a note correcting the catalog numbers 

 of the type specimen of Selenemetra Jinschii in the Berlin Museum. 



In my memoir on the unstalked crinoids of the Siboga expedition published in 

 1918 a key to the species of Oxymetra was given in which Oxymetra Jinschii and 0. 

 aranea were both admitted as valid species; 0. Jinschii was said to be characterized by 

 having the first four or five pairs of pinnules stiffened and elongated, Pi about as long 

 as P 2 , which is markedly longer than P 3 , and 60-80 cirrus segments of which those in 

 the outer half of the cirri bear small dorsal spines, and 0. aranea was said to have the 

 first six or seven pairs of pinnules stiffened and elongated, Pi markedly shorter than 

 P 2 and P 3 , which are of the same length and character, and 47-66 cirrus segments of 

 which the outer three-fourths bear prominent dorsal spines. 



Genus STEPHANOMETRA A. H. Clark 



Antedon (part) Lutken, Mus. Godeffroy Cat., vol. 5, 1874, p. 190 and following authors. 



Comalula (part) Smith, Ann. Mag. Nat. Hist., ser. 4, vol. 17, 1879, p. 406. 



Himeromctra (part) A. H. Clark, Smithsonian Misc. Coll., vol. 50, 1907, p. 356. 



Dichromelra (part) A. H. Clark, Proc. Biol. Soc. Washington, vol. 22, 1909, p. 13. 



Stephanometra A. H. Clark, Proc. Biol. Soc. Washington, vol. 22, 1909, p. 9 (diagnosis; genotype 

 Anledon monacantha Hartlaub, 1890); Amer. Nat., vol. 43, 1909, p. 254 (represented in Red 

 Sea); Proc. Biol. Soc. Washington, vol. 22, 1909, p. 176 (refeired to the Stephanometrinae) ; 

 Vid. Medd. Naturh. Foren. K0benhavn, 1909, p. 170 (confirmation of the original generic 

 diagnosis); Proc. U. S. Nat. Mus., vol. 40, 1911, p. 10 (represented in West Indies by Analci- 

 dometra); Notes Leyden Mus., vol. 33, 1911, p. 185 (lateral processes on elements of division 

 series characteristic of this genus absent in Dichromelra fiagellata); Mem. Australian Mus., vol. 

 4, 1911, p. 732 (in key), p. 735 (1 species in Australia), p. 769 (original reference; characters; 

 range; represented in Caribbean Sea by Analcidumetra) ; Rec. Indian Mus., vol. 7, 1912, p. 269 

 (ventrolateral processes on ossicles of IBr series and early brachials compared with similar 

 structures in Oligometra intermedia); Ann. Mag. Nat. Hist., ser. 8, vol. 10, 1912, p. 35 (lateral 

 processes on division series and lower brachials compared with those of Dichromelra tenuicirra) ; 

 Notes Leyden Mus., vol. 34, 1912, p. 145 (union of pinnule segments compared with the same 

 in Nanometra clymene) ; Proc. U. S. Nat. Mus., vol. 43, 1912, p. 401 (proximal pinnules compared 

 with those of Tropiometra audouini); Crinoids of the Indian Ocean, 1912, p. 11 (Ceylon the 

 western limit of the large and highly multibrachiate species); p. 12 (represented in southeast 

 African region), p. 13 (corresponds to Analcidometra) , p. 57 (in key), p. 132 (original reference; 

 type); Unstalked crinoids of the Siboga-Expeii., 1918, p. 93 (key to included species). — Gislen, 

 Zool. Bidrag Uppsala, vol. 9, 1924, p. 59, footnote (swimming movements), pp. 64, 66 (absence 

 of muscular fossae on radial articular faces), p. 89 (articulation in IBr series), pp. 99, 100 (pin- 

 nule articulations), p. 235. 



Lampromelra (part) H. L. Clark, Carnegie Inst. Washington Publ. 212, 1915, p. 104. 



Diagnosis. — A genus of Mariametridae in which one or more of the oral pinnules 

 are enlarged, greatly stiffened, sharp-pointed, and spinelike; the division series are 

 well separated, and the component ossicles bear rounded ventrolateral extensions; 



