446 Zoological Society. 



eleven and a half lines in length. The anterior incisbr of the upper 

 jaw is broad and divided by two notches into three distinct lobes ; 

 the next incisor on each side has its anterior and posterior margins 

 notched ; and the first molar (or the tooth which occupies the situa- 

 tion of the canine) has its posterior edge distinctly notched. This 

 tooth is separated by a narrow space anteriorly and posteriorly, from 

 the second incisor in front, and the second molar behind ; the tem- 

 poral ridges converge towards the occiput, near which, however, 

 they are separated usually by a space of about four lines. 



The second species (G. Philippinensis) is usually about twenty 

 inches in length, and has a skull two inches seven lines in length. 

 It may be distinguished from G. Temminckii by the proportionately 

 larger ears, and the greater length of the hands ; the skull is nar- 

 rower in proportion to its length ; the muzzle is broader and more 

 obtuse ; the orbit is smaller ; the temporal ridges generally meet 

 near the occiput, or are separated by a very narrow space ; the an- 

 terior incisor of the upper jaw is narrow, and has but one notch ; 

 the next incisor on each side is considerably larger, longer, and 

 stronger than in G. Temminckii, and moreover differs in having its 

 edges even ; the same remarks apply to the first false molar. The 

 incisors and molars here form a continuous series, each tooth being 

 in contact with that which precedes, and that which is behind it. 

 The most important difference perhaps which exists between the 

 two species in question consists in the much larger size of the molar 

 teeth in the smaller skull, the five posterior molars occupying a space 

 of ten lines in length, whereas in G. Temminckii, a much larger animal, 

 the same teeth occupy only nine lines. The above are the most pro- 

 minent characteristic differences in the two species, though several 

 other minor points of distinction may be observed. 



Mr. Blythe called the attention of the Meeting to the skull of a 

 Cumberland Ox, presenting an unnatural enlargement of the facial 

 bones, accompanied with a most remarkable development of the horns, 

 one of which measured four feet in circumference at its base. 



The reading of Professor Owen's paper " On the Osteology of 

 the Marsupialia," was completed. After some preliminary remarks 

 upon the importance of the study of the skeleton, in investigating 

 the natural groups of this order and the determination of the inter- 

 esting fossils of Australia, Professor Owen proceeded in the first 

 place to point out the principal modifications in the general form 

 of the skull as observed in the various genera of marsupial animals. 

 " The skull," says Professor Owen, " is remarkable in all the 

 genera for the small proportion which is devoted to the protection 



