60 
ZOOLOGICAL LITERATURE. 
’ Orca (Ps&udorca) meridionalis. Mr. Flower, who described this species last 
year (see Zool. Kecord, i. p. 38), states, in an additional note, that two dif- 
ferent Cetaceans are confounded under the name of Blackfish,” viz. this 
species and a GlohiocephaUiSy and that the notes on the habits and external 
appearance of the Blackfish, sent to him by his correspondent, Mr. Crowther, 
and published in his description of the Fseudorca^ do not apply to that species, 
but to the Glohiocephalus. Proc. Zool. Soc. 1865, p. 470. 
^ Notes on the front part of a skull of Orca meridionalU by Mr. Cope, in Proo. 
Acad. Nat. Sc. Philad. 1865, p. 198. 
4 Phoccena spinipinnis is a very singular new species from the Bio Plata, de- 
scribed by Dr. Burmeister in Proc. Zool. Soc. 1865, p. 229. The anterior 
margin of its dorsal fin is concave, and beset with small spine-like tubercles. 
The dorsal fin is in the middle of the back. Views of the skull and dorsal 
fin are given. This discovery was followed by another not less interesting, 
viz. of 
^ Phoccena tuhercidifera^ sp. n.. Gray, Proc. Zool. Soc. 1865, p. 318, fr-om the 
moiitb of the Thames. Also this species has the anterior margin (which is 
convex) of the dorsal fin tubercular. This fin is behind the middle of the 
back. 
^Phocmia vomerina^ sp. n.. Gill, Proc. Acad. Nat. Sc. Philad. 1865, p. 178, 
from California.— P. hrachycium^ sp. n.. Cope, ibid. p. 279, from the coast of 
Massachussets. 
'^Beluga. Three new species from Arctic North America are noticed by Mr. 
Cope, Proc. Acad. Nat. Sc. Philad. 1865, p. 278, viz. B. rhinodon, B, dccUvis, 
and B, concreta. 
Glohiocephalus melas. Prof. Beinhardt reports on the captm’e of a young 
female in the Kattegat, April 23rd, 1863. Vidensk. Meddel. natm’h. Foren. 
Kjobenh. (1864) 1865, p. 276. 
Glohiocephalus intermedius (Hartl.). Notes on a specimen, by Mr. Cope, in 
Proc. Acad. Nat. Sc. Philad. 1865, p. 198. 
^Hypet'odon semiJunctuSf sp. n.. Cope, Proc, Acad. Nat. Sc. Philad. 1865, 
p. 280. 
MABSUPIALIA. 
Mr. Flower has examined tlie brain of various Marsupials 
(Kangaroo, ’Wombat, Thylacinus, Pbalangista, Didelpbys) and 
of Echidna, especially with regard to the existence or non-ex- 
istence of a corpus callosum, Philos. Trans. 1865, pp. 633-651. 
For the purpose of comparing their brain with that of placental 
Mammals, he describes the modifications of the corpus callosum, 
as they appear in the Sheep, Rabbit, Sloth, and Hedgehog. He 
maintains that the corpus callosum is present in the Marsupials 
and Monotremes, although but little developed, even less than in 
the Hedgehog, and that, therefore, the differentiating characters 
of the Implacentals should be expressed thus : — 
1. The peculiar arrangement of the folding of the inner wall of the cerebral 
hemisphere. A deep fissure, with corresponding projection mthin, is con- 
tinued forwards from the hippocampal fissure, almost the whole length of the 
