936 General Notes. 
ouard Brandt records two instances of Tania cucumerina in the 
human body. 
Dr. A. C. Stokes describes two new North American Oligochete 
worms (The Microscope, viii., 1888), Ælosoma distichum and Pris- — 
tina flavifrons, and Gustav Eisen characterizes a new genus of the 
same group (Mem. Cal. Acad., ii., 1888) under the name Sutroa 
rostrata. 
Criodrilus lacuum is made the subject of an extensive anatomical 
monograph by A. Collier in the Zeitsch Wiss. Zoologie, Bd. xlvi., 
1888. 
MorLuscs.—The crystalline style is a peculiar structure found 
in a pocket developed from the stomach of certain lamellibranch 
molluscs. Many theories have been advanced as to its nature and 
physiological functions. Möbius maintained that it was a reserve 
food supply, and recently (Biol. Centralblatt, 1888) Haseloff has 
experimented on Mytilus edulis, in which the structure is almost 
constantly present. He starved some individuals for a few days, 
and found that the style had disappeared. Others of the same 
starved lot were afterward fed with abundant food, and on examina- 
tion were found to possess the style. Haseloff regards the style as 
a chemical modification of surplus food rather than a secretion. 
MaLacopopa—Peripatus comes in for several papers recently. 
Adam Sedgwick concludes his account of the development of the 
Cape species of the genusinthe Quarterly Journal of Microscopical 
Science, Vol. XXVIII., part 3, and in part 4 of the same volume mo- 
nographs the thirteen or fourteen known species of the genus. 
W. L. Sclater describes the early development of a South American 
species of the genus in part 3, and Miss Lilian Sheldon describes 
points in the anatomy of P. capensis and P. nove-zelandie in part 
4 of the same volume. In Vol. XII. of the Zoologist, S. A. Olliff 
has notes on Periaptus in New South Wales, and F. Jeffrey Bell 
calls attention to the fact that years ago Schmarda described a 
species of the genus (P. quitensis) from South America. 
CrusTAcEA.—Bouvier treats of the circulatory apparatus of the 
Decapod crabs in the Bulletin de la Societé Philomathique de Pars, 
Vol. XII. His observations were made on the genera Maia, 
Stenorhynclus, Pagurus, Astacus, Palinurus, Portunus, ete. : 
Hoek describes a new parasitic Cirripede (Sylon challengeri) 1n 
Spencer Bates’ report on the Macrura of the Challenger. 
OEPHALOCHORDA.—Dr. E. Rhode (Zool. Anzeiger, XI.) describes 
the histology of the nervous system of Amphioxus. He finds it t 
resemble closely that of the Chætopod Sthenelais, in the presence ° 
