
986. The American Naturalist. [November, 
HEILPRIN, A.—The corals and coral reefs of the western waters 
of the Gulf of Mexico. Proc. A. N. S. Phila., 1890, p. 303. 
Fewkes, J. W.—A new instance of parasitic hydroids. Micro- 
scope, X., p. 329, 1890.—Sertularia on Hemitripterus. 
HEILPRIN, A—Rate of coral growth. Proc. A. N. S. Phila.» 
1891, p: 75. 
ECHINODERMATA. 
Brooks, W. K.—On the early stages of Echinoderms. J. H. 
U. Circ., X., p. 101, 1891. 
Fietp, G. W.—Contributions to the embryology of Asterias 
vulgaris. J: H U: Circ., X. p. 101, 1891. 
Ives, J. E—Echinoderms from the northern coast of Yucatan 
and the harbor of Vera Cruz. Proc. A.N.S. Phila., 1890, p. 317.— 
H. silamensis and H. nitida are new; new genus, Thyraster for 
_ Echinaster serpentarius ; notes on other forms. 
PLATHELMINTHES. 
BRANDEGEE, K.—Ccenurus of the hare. Zoe, I., p. 265, 1890. 
Leipy, J.—Notices of Entozoa. Proc. Phila. Acad., 1890, 
p. 410—Describes as new Distomum trapezium (from Osprey), 
D. aniarum (from Tropidonotus sipedon), D. gastrocolum (from 
Trichiurus lepturus), D. ischium (from Saurus fetens), D. lasium 
(from /lyanassa obsoleta), Cercana platyura (Wyoming), Tenia 
nematosoma (from Esox reticulatus), Phyllobothrium inchoatum (from 
Mesoplodon sowerbiensis). 
Parasites of Mola rotunda. Proc. A. N.S. Phila., 1890, 
p. 281.—Distomum pedocotyli nov., Anthocephalus elongatus. 
Suarp, B.—On a probable new species of Bipalium. Proc. 
_A.N.S. Phila., 1891, p. 120.—B. manubriatum (greenhouse in 
Penna.). 
Woopwortn, W. M —Contributions to the morphology of the 
Tubellaria. I. On the structure of Phagocata gracilis Leidy. 
Bull. Mus. Comp. Zool., XXI., No. 1, 1891. 

NEMATOIDA, | : 
_ Mark, E. L.—Trichine in swine. 20th Rep. Mass. Board of 
Health, p.113, 1888 [1890]. ee Oe : 

