20 Echin. 
SyRTEMATIO, CRtNOtnEA. 
1031 
Oligoinrf ra g’en. n. of Tlimerometrirlae, 
type Anfedon scvriinnna Clark Wash- 
ington Pioc. Biol. iSoc. 21 p. 12G. — 0. 
imlchella p. 22G Singapore, iinhricala 
j). 228 ? Tranquebar, India spp. n. 
Clark Washington Proc. Biol. Soc. 21. 
— 0. carihbea sp. n. N. Panama (off 
Colon, 34 fms.) Clark Proc. U. S, JMat. 
Mus. 34 p. 238. — 0. graeilieirra sp. n. 
Philippine Is. Clark Smithson. Misc. 
Collect. 52 p. 221. 
Pachyocrinus crassihasnlis Billings, 
redescribed Hudson Bull. N. York Mns. 
107 pp. 119-124. 
Pentametrocrinus g’en. n. (of Pentame- 
trocrinidae fam. n.), type Eudiocriniis 
jnynnicus Clark Proc. U. S. Nat. Mns. 
34 p. 277 ; Washington Proc. Biol. Soc. 
21 p. 134. — P.diomcdeae sp.n. Philippine 
Is. Clark Smithson. Misc. Collect. 52 
p. 234. 
Perometra elongata sp. n. Philippine 
Is. Clark Smithson. Misc. Collect. 52 
p. 229. 
Pilocrinus gen. n. of Holopodidae 
Jaekel N. Jahrb. Min. 1907 p. 290. 
\Platycvinu8 angusta sp. n. Silurian 
(Niagaran Limestone), United States 
(Illinois) Slooum Field Columb. Mns. 
Pnbl. Geol. Ser. 2 pp. 292-293. 
-fPodolithus gen. n. p. 242, type 
scliizocrinus p. 244, strophocrinus nom. 
n. p. 242, anomalocrhms p. 24G, euchei- 
rocrinus p. 247, dendrocrinus p. 248 
spp. n. Ordovician, United States (Min- 
nesota) Sardeson J. Geol. 16 figs. 
'\Potcrwerinns nikitini sp. n. Upper 
Carboniferous, Russia (Samara) Stuoken- 
BERo vSt. Petersburg Mem. Com. geolog. 
23 pp. 25, 118. 
Proholopus gen. n. of Holopodidae, 
type Eugeniacrinus Jioloplformis Jaekel 
N. Jahrb. Min. 1907 p. 292. 
Psathyrometra borealis sp. n. Aleu- 
tian Is. (E. of Agattu Is., 104G fms.) 
p. 236 ; P. profundorum sp. n. N. E. 
Pacific (off Moresby I., Queen Charlotte 
Gp., 1588 fms.) p. 237 Clark Proc. U. S. 
Nat. Mus. 34. — P. covgesta sp. n. Ha- 
waiian Is. Clark Proc. U. S. Nat. Mus. 
34 p. 221. 
Pseudolopus gen. n. of Holopodidae 
Jaekel N. Jahrb. Min. 1907 p. 274. 
Ptilocrinus Clark Amer. Nat. 42 
pp. 541-543 ; diagn. p. 297, P. ant- 
arcticus sp. n. Antarctic (70'’ 23' S. 
47' W.) Bather Bull. Acad. Belg. 
1908 p. 29G fig. 
Ptilomctra Ir'udtopoda sp. n. Philip- 
pine Is. Clark Smithson. Misc. Collect. 
52 p. 224. 
Rhizoerinus verrilli sp. n. E. United 
States (off Marthas Vineyard, Mass., G40 
fms.) Clark Proc. U. S. Nat. Mus. 34. 
p. 207. 
^Rhizocy’inns (contd.). — P. cylindricus 
sp. n. Cretaceous, United States (New 
Jersey) Weller New Jersey Geol. Surv. 
Paleont. Ser. 4 pp. 270-279. 
1 Uoveoerinus gen. n. of Crinoidea for 
R. alata p. 358 figs., communis p. 359 
figs. spp. n. Upper Chalk, S. England 
(Seaford Hd., Sussex etc.) Douglas 
Geol. Mag. ser. 2 dec. 5 5 . 
'\Steplm.nocrinus obconicvs pp. 281- 
282, skiffi. pp. 282-284 spp. n. Silurian 
(Niagaran limestone). United States 
(Illinois) Slocum Field Columb. Mus. 
Publ. Geol. Ser. 2 pp. 281-289. 
Thalassometra gigantea. p. 222, Jisheri 
p. 223 ci'assicirra, delicata p. 225 spp. n. 
Hawaiian Is. Clark Proc. U. S. Nat. 
Mus. 34. — T. komachi sp. n. Japan 
(Misaki, Sagami B.) Ciark Proc. U. S. 
Nation. Mus. 34 p. 311. 
Thaumatometra gen.n. of Antedonidae, 
type Antedon eiliata Clark Washington 
Proc. Biol. Soc. 21 p. 127. — T. comaster 
sp. n. Japan (Yezo Str. 300-533 fms.) 
p. 232 ; T. parva sp. n. Japan (Sagami 
B., 120-265 fms.) p. 231 Clark Proc. 
U. S. Nat. Mus. 34. 
yrhysanocrinus campanidatus sp. n. 
Silurian (Niagaran Limestone), United 
States (Illinois) Sf.ocum Field Columb. 
Mus. Publ. Geol. Ser. 2 pp. 299-301. 
Trichometra gen. n. of Antedonidae, 
type Antedon aspera Clark Washing- 
ton Proc. Biol. Soc. 21 p. 131. — T. aspera 
sp. n. E. United States (off S. Georgia, 
270 fms.) Clark Proc. U. S. Nat. Mus. 
34 p. 231. — T. explicata sp. n. Philip- 
pine Is. Clark Smithson. Misc. Collect. 
52 p. 232. — 7’. vexator sp. n. Hawaiian 
Is. Clark Proc. U. S. Nat. Mus. 34 
p. 217. 
Zenometra pyramidalis sp. n. E. 
United States (off Savannah, Georgia, 
440 fms.) Ci.ARK Proc. U. S. Nat. Mus. 
34 p. 237. — Z. triserialis sp. n. Hawaiian 
Is. Clark Proc. U. S. Nat. Mus. 34 
p. 219. 
