1158 The American Naturalist. [December, 
NAGAKAWA, Isaac — The origin of the cerebral cortex and the 
homologies of the optic lobe layers in the lower vertebrates. 
Jour. Morph., IV., p. 1, 1 pl, 1890. 
McC ure, C. F. W.—The segmentation of the primitive ver- 
tebrate brain. Jour. Morph., IV., p. 35., pl. iilii., 1890.— Vide Am. 
Nar. XXIV, p. 187. 
GisBEs, H.—The crescent cells of Gianuzzi. Microscope, p. 
65, 1890. 
ELASMOBRANCHII. 
PLATT, J. B —The anterior head-cavities of Acanthias. Zoo. 
Anz., XIL, p. 239, 1890.—Describes a pair of cavities in front 
of the premandibular. 
E1GENMANN, C. H. AND R.— Notes from the San Diego Biologi- 
cal Laboratory. West Am. Scientist, VI., pp. 123, 147, 1889.— 
Notes on two sharks and on the embryos of five Elasmobranchs. 
Bean, T. H.—Description of a new Cottoid fish from British 
Columbia. Proc. U. S. Nat. Mus., XII., p. 641, 1890.—Synchirus 
[n.g.] ez. 
TELEOSTS. 
Bean, T. H.—A hybrid between the lake trout and brook 
trout. Bull. U. S. F. C; VII, p. 216, 1889. 
BRAKELEY, Jouns H.—Rapid growth of carp due to abundance 
of food. Bull. U. S. F. C., VIL, p. 20, 1889. 
SmILEv, C. W.—Loch Leven trout introduced into the United 
States. Bull. U. S. F. C., VIL, p. 28, 1889. 
Hamitton, W. R—Croaking of the perch. Bull. U. S. F. C., 
VIL, p. 63, 1889.—In Haploidonotus grunniens caused by 
ded grinders, 
EaRLL, R. E., AND Suir, H. M.—The American sardine in- 
dustry in 1886. Bull. U. S. F. C., VIL, p. 161, 1889.—History 
and statistics, 
RavENEL, W. DEC.—Information bearing upon the artificial 
propagation of mullet. Bull. U.S. F. C., VIL, p. 197, 1889. 
Jorpan, D. S.— Note on the occurrence of the opah (Lampris 
RR on the Grand Banks. Bull. U.S. F. C., VIL, p. 202, 
I 
Ducros, G—La perche argentée d’Amerique ou calicobass. 
