1 26 Zoological Society. 



and surrounded at the base with 5 or 6 small rings : the species is 

 distinguished from the pygmy Antelope of the Cape by its longer tail 

 and ears, the latter clothed with white hair on the inside, by the 

 darker mouse -colour of the body and the uniform hue of the legs, 

 which instead of being sandy red as in the Cape species, are of the 

 same colour as the body, only rather paler. But for the circumstance 

 of the female possessing horns, I should have been inclined to iden- 

 tify this animal with the A. Maxwellii of Col. Smith. 



"4. Antilope Sumatrensis. This species and A. Thar were exhibit- 

 ed together for the purpose of pointing out the similarity of their 

 zoological characters, and correcting a mistake into which Messrs. F. 

 Cuvier, Desmarest, and Col. Smith have fallen with regard to the 

 former species. According to these zoologists the Cambing Out an 

 (A. Sumatrensis) possesses both the lachrymal sinus and the longi- 

 tudinal gland on the maxillary bone, which distinguishes the Duy- 

 kerbok {A. Mergens) and some other Antelopes: in reality the lachry- 

 mal sinus is sufficiently distinct, but there is not the slightest trace 

 of any maxillary gland. The same zoologists represent the female 

 Cambing as being without horns and having only two teats : the spe- 

 cimen exhibited, a young female, had tolerably large horns and di- 

 stinctly showed four teats, thus agreeing in all respects with the adult 

 female Thar with which it was compared. 



"5. Antilope palmata. Colonel Smith has described the horns of 

 this species from an imperfect pair preserved in the Museum of the 

 College of Surgeons, but was undecided whether it should be con- 

 sidered as a distinct species or only a variety of the Prongbaick (A. 

 Furcifer). The present perfect pair, with the skin of the head at- 

 tached, goes far to prove the specific distinction, but the habitat is 

 widely different from that assigned by Colonel Smith. The speci- 

 men came from Mexico, where Dr. Coulter informs me it is sufficient- 

 ly common. The horns are twice or thrice as large again as those of 

 A. Furcifer, and instead of preserving a tolerable degree of parallelism, 

 as in that species, spread widely, and are much hooked at the points. 

 The face also is of a very dark brown colour, whilst in A. Furcifer it 

 is of the same light fawn as the upper parts of the body." 



Mr. Gray exhibited a specimen of Argonaut with an Ocytho'e 

 from the Cape of Good Hope, and stated that as the subject had 

 been brought forward at the last meeting, he was induced to remark 

 that every time he considered it, and compared it under its various 

 bearings with the relations of other Molluscans and their shells, he 

 was more and more inclined to believe that the animal found in the 

 shell of Argonauta was a parasite. He gave the following reasons 

 for this belief. 



" 1 . The animal has none of those peculiarities of organization for the 

 deposition, formation, and growth of the shell, nor even the muscles 

 for attaching it to the shell, which are found in all other shell- 

 bearing Molluscans ; instead of which it agrees in form, colour, and 

 structure with the naked Mollusca, especially the naked Cephalo- 

 pods. 



" 2. The shell, although it agrees in every respect with the shells 



