REPORT OF NATIONAL MUSEUM, 1908. 
CLARK, AUSTIN Hospart—Continued. 
species, and Comaster L. Agassiz 
1836 (type C. multiradiata  Lin- 
naeus 1758) with 44 species. The 
author shows that Hnerinus parrae 
of Guérin 1835 is the same as 
Pentacrinus miilleri Orsted, which 
should therefore be known as_ Iso- 
crinus parrae (Guerin). 
The stalked crinoids of the Si- 
boga Expedition. 
Amerizan Naturalist, xu, No. 
495, Mar., 1908, pp. 203-206. 
A review of a monograph by Dr. 
L. Déderlein on the recent stalked 
erinoids of the East Indies, based 
on the collections made by the * Si- 
boga’’ Expedition, and containing 
the announcement of the discovery 
of the infrabasals in a species of 
Metacrinus. 
—— New genera of unstalked cri- 
noids. 
Proc. Biol. Soe. Washington, 
xxI, Apr. 11, 1908, pp. 125-— 
136. 
Thirteen new genera cf Comatu- 
lida are described, while the new 
name Pentametrocrinidae is given to 
the family containing Pentametro- 
crinus and Decametrocrinus. The 
paper concludes with a systematic 
list of the families and genera of 
Comatulida. 
New stalked crinoids from the 
eastern coast of North America. 
Proc. iW. Si. Nak Mus... Sexy; 
No. 1607, May 4, 1908, pp. 
205-208, figs. 1-3. 
Two new species are described— 
Bathycrinus serratus and Rhizocri- 
nus verrilli—the types of which 
were collected by the U. S. Fish 
Commission and were recently re- 
turned to the U. S. National Museum 
by Prof. A. E. Verrill. 
Descriptions of new species of 
erinoids, chiefly from the collections 
made by the U. 8S. Fisheries steamer 
Albatross at the Hawaiian Islands 
in 1902; with remarks on the classi- 
fication of the Comatulida. 
Proc. U0. S.; Nat. Mis... XOCxtv, 
No. 1608, May 14, 1908, pp. 
209-239. 
Gives a key to the 11 recent fam- 
ilies of Comatulida, and their geo- 
graphical and bathymetrical range; 
also a table of distribution for the 
29 genera, and a key to the 12 Ha- 
131 
CLARK, AUSTIN Hospart—Continued. 
waliian species cf which 11 are de- 
scribed as new. Thirteen other new 
species are described from various 
parts of the Atlantic and Pacific 
oceans. 
Two new crinoid genera. 
Proc. Biol. Soc. Washington, 
XxI, June 9, 1908, pp. 149- 
152. : 
Subdivides the genus Jsocrinus on 
characters of arm = structure, erect-- 
ing two new genera. Hndorocrinus, 
type H. parrae (Guérin), and Hypa- 
locrinus, type H. naresianus, P. A. 
Carpenter. 
Some abnormal 
structure in recent crinoids. 
Proc: “WT. 8S: Nat. Mus: Sexi, 
No. 1612, June 16, 1908, pp. 
265-270, figs. 1-5. 
Records instances” of 
arm structure 
tensis, 
cases of arm 
abnormal 
in Rhizocrinus lofo- 
Pecilometra acala, Himero- 
metra stylifer, Charitometra imbri- 
eata, Heliometra tanneri and 4H. 
marima,. 
The crinoid genus Eudioecrinus, 
with description of a new species. 
Proc. U. 8. Nat, Mfus.; sxx, 
No. 1613, June 20, 1908, pp. 
271-279, figs. 1-11. 
Discusses the structure of the va- 
rious species previously included in 
Eudiocrinus and demonstrates their 
position in two families, Zygomet- 
ridae and Pentametrocrinidae. The 
genera Hudiocrinus and Pentametro- 
ecrinus are defined, and a new species 
of Eudiocrinus is described. 
CLARK, HuperT LYMAN. The Cidaridae. 
Bull. Mus. Comp. Zool., ut, No. 
7, Dec., 1907, pp. 165-230, 
pls. 1-11. 
Gives a history of the classifiea- 
tion of the Cidaridae. Recognizes 21 
genera and 60 recent species; two 
genera and three species are de- 
scribed as new. 
—— The Apodous Holothurians. <A 
monograph of the Synaptidae and 
Molpadiidae, including a report on 
the representatives of these families 
in the collections of the U. S. Na- 
tional Museum. 
Smithsonian Contributions to 
Knowledge, part of vol. XxxvV, 
No. 1723, Jan. 21, 1908, pp. 
1-231, pls. I-XIII. 
