10 JOURNAL OF THE WASHINGTON ACADEMY OF SCIENCES VoL. 13, No. 1 
sumatranus (Déderlein), S. nobilis var. tenuis (Gislén), S. nobilis var. timo- 
rensis (Déderlein), S. nobilis var. tuberculatus (A. H. Clark), S. serratus 
(Déderlein), S. superbus (P. H. Carpenter), S. sulwensis (Déderlein), S. 
tuberosus (P. H. Carpenter), and S. varians (P. H. Carpenter). 
Genus Cenocrinus Wyville Thomson 
Cenocrinus WyvitLE THoomson, The Intellectual Observer, vol. 6, No. 31, 
August 1864, p. 2. 
Diagnosis.—A genus of Pentacrinide in which the first two post-radial 
ossicles are united by syzygy and the second is axillary, the following division 
series consist of numerous segments, more than 6 in the outermost, and the 
segments of the proximal pinnules have strongly projecting distal angles so 
that these pinnules have a strongly serrate outline. 
Genotype.—Pentacrinites caput-meduse Miller, 1821 (= Encrinus caput- 
meduse Lamarck, 1816 = Isis asteria Linné, 1766). 
Geographical range.-—West Indies; Cuba to Barbados. 
Bathymetrical range.—F rom shallow water (it has been found on the beach 
at Barbados) to 585 meters. 
Included species.—Cenocrinus asteria (Linné). 
Remarks.—Although this species, which is so frequently figured in text- 
books, was first described by Guettard so long ago as 1761, and by Ellis 
in 1762, only sixteen specimens of it have so far come to light; but three 
undetermined specimens mentioned by early writers may also belong to it. 
Genus Teliocrinus Déderlein 
Teliocrinus D6DERLEIN, Wiss. Ergebn. d. deutsch. Tiefsee Exped., vol. 17, 
Heft 1, 1912, p. 22. 
Comastrocrinus A. H. Cuarx, Crinoids of the Indian Ocean, 1912, p. 252. 
Diagnosis.—A genus of Pentacrinide in which the first two post-radial 
ossicles are united by syzygy and the second is axillary, the division series 
beyond the first are variable, but never of 3(1+2), rarely of two, and never 
of more than six elements, and the ossicles of the division series and brachials 
have everted and strongly produced distal borders. 
Genotype.—Teliocrinus asper Déderlein, 1912 (= Hypalocrinus springeri 
A. H. Clark, 1909). 
Geographical range.-—From western Sumatra northward to the Gulf of 
Martaban and westward to the Laccadive Islands and the western coast 
of India. 
Bathymetrical range.—F rom 366 to 1280 meters. ‘ 
Included forms.—Teliocrinus liliaceus (A. H. Clark), 7’. ornatus (A. H. 
Clark), and 7’. springert (A. H. Clark) (= T.. asper Déderlein). 
Genus Endoxocrinus A. H. Clark 
Endoxocrinus A. H. Cuarx, Proc. Biol. Soc. Washington, vol. 21, 1908, 
p. 151.—A. H. Cuarx, Proc. U. 8S. Nat. Mus., vol. 35, 1908, p. 131. 
Diagnosis. —A genus of Pentacrinids in which the first two post-radial 
ossicles are united by syzygy and the second is axillary, all the following 
division series are 3(1+2), and the first two brachials are united by syzygy. 
Genotype.—Encrinus parre Gervais, 1835 (= Encrinus millert Guilding, 
1828 [not Encrinites milleri von Schlotheim, 1822] = Pentacrinus miillert 
Oersted, 1856). 
