28 Mamm. 
MAMMALIA. 
277. Norner, C. Ueber den feineren Bau des Pferdehufes. Arch. mikr. 
Anat. xxviii, pp. 171-224, taf. xv. 
On the anatomy and histology of the Horse’s hoof. 
278. Nott, J. F. Wild Animals Photographed and Described. London : 
1886, roy. 8vo, pp. 1-568. 
Reproductions in black and white of a series of photographs of the 
animals in the Zoological Society’s Gardens, with appended popular 
descriptions. 
279. Oliver, S. P. Madagascar : an Historical and Descriptive Account 
of the Island and its former Dependencies. Yols. i & n. London : 
1886, 8vo. 
Chapter viii (Yol. I, p. 510) contains an account of the natural history 
of Madagascar, with a list of the Mammals. 
280. Onodi, A. D. Ueber die Entwickelung des sympathischen Nerven- 
systems. Arch. mikr. Anat. xxvi (Mammals, pp. 568-580), taf. 
xxv-xxvii. 
281. Osborn, H. F. The Origin of the Corpus Callosum, a contribution 
upon the Cerebral Commissures of the Vertebrata. Morph. JB. xii, 
pp. 223-251, pis. xiii & xiv. 
The object of this essay is to prove that the upper commissure of the 
Amphibian brain represents the corpus callosum, while the lower com- 
missure represents the anterior commissure of higher forms. 
282. . Observations upon the Upper Triassic Mammals, Droma- 
therium and Microconodon. P. Ac. Philad. 1886, pp. 359-363 ; also 
Science, viii, p. 540. 
Redescription of Dromatherium sylvestre of Emmons ; another jaw, 
identified by Emmons as D. sylvestre , is redescribcd as Microconodon 
tenuirostris , nn. g. & sp. 
283. Owen, [Sir] R. On the Premaxillaries and Scalpriform Teeth of a 
Large Extinct Wombat ( Phascolomys curvirostris , Ow.). Q. J. Geol. 
Soc. xlii, pp. 1 & 2, pi. i. 
Description of a jaw-bone from the Wellington bone caves, N. S. W. 
284. Packard, A. S. On the Former Southern Limits of the White or 
Polar Bear. Am. Nat. xx, pp. 655-659. 
285. Pantanellt, — . Vertebra ti fossili delle ligniti di Spoleto. Atti 
Soc. Tosc. vii, pp. 93-99, tav. ix. 
Descriptions of remains of Mastodon arvernensis, M. borsoni, and 
Tapir us arvernensis. 
286. Parker, W. K. On the Structure and Development of the Skull in 
the Mammalia. Part II. Edentata. Phil. Tr. clxxvi, pp. 1-119, 
pis. i-xv. Part m. Insectivora. Phil. Tr. clxxvi, pp. 121-275, 
pis. xvi-xxxix. 
The development of the skull is described in detail in all the principal 
modifications of the Edentate group, and in a summary at the end of the 
volume is contained a few remarks on the most noticeable points in the 
