gAN. 4, 1923 CLARK: REVISION OF PENTACRINIDAE 11 
Geographical range.— West Indies; Cuba to St. Vincent. 
Bathymetrical range-—From shallow water (whence it is occasionally 
brought up by fishermen) down to 526 meters. 
Included species —Endoxocrinus parre (Gervais). 
Remarks.—In the ‘Challenger’ report Carpenter confused this species 
with Diplocrinus maclearanus and his account of ‘‘Pentacrinus miilleri”’ is 
based upon specimens of both species. This explains the discrepancy be- 
tween the original diagnosis of Hndoxocrinus and the characters of the type 
species, and also Déderlein’s confusion regarding parre at the time he pro- 
posed the genus Diplocrinus. 
Genus Diplocrinus Doderlein 
Diplocrinus D6pDERLEIN, Wiss. Ergebn. d. deutsch. Tiefsee Exped., vol. 17, 
Heft 1, 1912, p. 21. 
Diagnosis.—A genus of Pentacrinide in which all of the division series are 
2(1+2), the first two brachials are united by syzygy, and the cirri are long 
and stout with more than 20 (usually more than 30) segments, the whorls 
being separated by 1-10 pentagonal to stellate internodals. 
Genotype.—Here designated as Pentacrinus maclearanus Wyville Thomson, 
1877. 
Geographical range-—From Florida to Brazil, and from Timor to the 
Philippine and Meangis Islands. 
Bathymetrical range.—From 154 to 1097 meters. 
Included forms.—Diplocrinus alternicirrus (P. H. Carpenter), D. mac- 
learanus (Wyville Thomson), and D. siboge (Déderlein). 
Annacrinus, gen. nov. 
Diagnosis.—A genus of Pentacrinide in which all of the division series 
are 2(1+2), the first two brachials are united by syzygy, and the cirri are 
short with about 18 segments the whorls being separated by 30-40 or more 
rounded internodals. 
Genotype.—Pentacrinus wyville-thomsoni (Jeffreys, nomen nudum) Wyville 
Thomson, 1872. 
Geographical range.—From the Bay of Biscay to Morocco and the Canary 
Islands. 
Bathymetrical range-—From 1330 to 2002 meters. 
Included species.—Annacrinus wyville-thomsont (Wyville Thomson). 
Genus Neocrinus Wyville Thomson 
Neocrinus Wrvitte Tuomson, The Intellectual Observer, vol. 6, No. 31, 
August 1864, p. 7. 
Diagnosis.—A genus of Pentacrinide in which the first two post-radial 
ossicles are united by synarthry and the second is axillary; I1Br and often 
further division series are present. 
Genotype.—Pentacrinus decorus Wyville Thomson, 1864. 
Geographical range.—West Indies; from Florida to Grenada. 
Bathymetrical rangee—From shallow water (sometimes brought up on 
Fishermen’s lines) down to 1219 meters. 
Included forms.—Neocrinus blakei (P. H. Carpenter), and N. decorus 
(Wyville Thomson). 
