2 Ocel. 
CCELENTEitATA. 
4. Chun, C. Die Gewebe der Siphonophoren, ii. Zool. Anz. v. 
pp. 400-406. 
Continuing his researches, the author describes a nervous system in 
Rhizophysa , Physalia , and Apolemia uvarici. 
[5. . Die mikroskopischen Waffen der Ccelenteraten. Humboldt, 
Heft ii. pp. 54-57. 
6. Clarke, S. F. New Hydroids from Chesapeake Bay. Mem. Bost. 
Soc. iii. pp. 135-142, 3 pis. 
Six species, all Gymnoblastic, are described, five being new, and for one 
of these a new genus, Calyptospadix, is formed. 
7. Claus, C. Zur Wahrung der Ergebnisso meiner Untersuchungen 
fiber Charybdea als Abwohr gegen der Haeckelismus. Arb. z. lust. 
Wien, iv. pp. 229-312. 
8. Conn, H. W. Development of Tubularia cristata. Hopkins Univ. 
Circ. No. 17, p. 247, and Zool. Anz. v. pp. 483 & 484. 
The author corrects Ciamician in certain particulars, and shows that 
Tubularia does not present any noteworthy differences from other 
Hydroids in its development. 
9. , & Beyer, H. G. The Nervous System of Porpita. Stud. 
Biol. Lab. Hopkins Univ. ii. pp. 433-455, pi. xxxv. 
Nerve ganglion cells have been described in the ectoderm in Vellela 
by Chun ; the observations in the present paper confirm his statement 
as to the existence of a nervous system in the Siphonophora, and extend 
our knowledge of the relation and distribution of the same. The authors 
describe a series of organs around the edge of the velum, which they 
regard as organs of sense, possibly tactile. 
10. Fewkes, J. W. The Siphonophores. iv. Anatomy and Develop- 
ment of Diphyes. Am. Nat. xvi. pp. 89-101. 
The author continues his researches in this subject. [See Zool. Rec. 
xviii. Ccel. p. 2.] 
11. . Notes on the Acalephce from the Tortugas, with a description 
of new Genera and Species. Bull. Mus. C. Z. ix. pp. 251-289. 
The author describes new Medusce collected at Key West and the 
Tortugas Islands, in March and April, 1881. He also gives an account 
of the anatomy and development of Linerges , Cassiopea (Polyclonia ) , 
Ocyroe , and a stage in the embryology of Eucliaris. 6 new species of 
Siphonophora, 2 new genera and 3 new species of llydroida are also 
described. New larval stages of growth, illustrative of the development 
of Glossocodon , are also figured and described. 
12. . On the Acalephca of the East Coast of New England. L. c. 
pp. 291-310. 
The author describes the Medusce taken by him at Newport, Rhode 
Island, in the summer of 1881, and also the Acalephce collected by the 
U. S. Fish Commission, off the New England Coast. Among these hitter 
were two Ctenophores, which may probably be referred to the genus Beroe. 
