126 Analytical Notices of Books. 



absence of tail, as well as of interferaoral membrane. The whole 

 of the species in this department also are figured, with the ex- 

 ception of the Proboscidea rivalis, ditfering from the P. saxatllis 

 only in size and colour; and descriptions and figures are given 

 of two other species, which although not new, appeared to re- 

 quire elucidation ; the Noctilio soricinuSj which is neither ecau- 

 date nor referable to the genus Glossophaga, as stated by Geoffroy, 

 and the Glossophaga amplexkaiidata, inaccurately represented in 

 the work of that great and philosophic naturalist. The Vesper- 

 alio Brasiliensis of M. Spix does not correspond with the species 

 described under the same name by M. Desmarest, neither is it 

 the V. Hilarii of M. Isidore Geoffroy St. Hilaire. 



The two concluding plates are filled with Crania, illustrative 

 of the relative proportions borne by those of the several genera of 

 Monkeys io each other, and to that of a native Indian. 



Philosophical Transactions Jor the Year 1824. Part 2. 



The present part contains only three Papers which properly 

 come under our consideration. Two of these are from the pen of 

 Sir Everard Home, and relate to several interesting points of com- 

 parative Anatomy, and the third consists of a Communication from 

 Mr. Dillwyn in continuation of his Observations on Fossil Shells, 

 noticed at p. 120 of our former volume. 



The " curious facts" in the Anatomy of the Walrus and the 

 Seal, pointed out by the first of these gentlemen, were derived 

 from the examination of specimens brought to this country by 

 the late Arctic Expeditions: the following are briefly the results : 

 1st, That the hinder flipper or foot of the Walrus possesses a 

 structure perfectly analogous to, or rather identical with, that of 

 the apparatus by means of which the Fly supports itself in a per- 

 pendicular or dependent position. 2nd, That the duodenum of 

 this Animal does not receive the bile through a common duct, 

 formed by the union of those of the Liver and Gall Bladder ; but 

 that this latter organ, which lies behind the duodenum in the 

 form of a large cylindrical hard body, receives the bile laterally 



