4 ZOOLOGICAL COLLECTIONS MADE DURING [Jatl. 4, 



2. Ogmorhinus leptonyx (Blainv.). 

 Stenorhynchus leptonyx, auct. 



One skull from the Falkland Isles. 



3. Otaria jubata, Desm. 



Four skulls from the Magellan Straits. One of these skulls, 

 apparently rather aged, has only five teeth oa each side above and 

 below, as in the genus Zalophus ; it has, however, the concave palate 

 and other characters of this genus. There is no appearance of there 

 ever having been a sixth pair of teeth ; but its absence is no doubt 

 only an individual variation. 



4. Arctocephalus australis, Zimm.' 



The skin of a young specimen " six weeks old," and five skulls 

 from the Magellan Straits. 



5. Hesperomys (Calomys) coppingeri, sp. n. 



A skin from Tom Bay, and two specimens in spirit " caught with 

 trap on a wooded islet about one acre in extent " in Cockle Cove, 

 (Feb. 9, 1879). 



Fur very long and soft, fully half an inch in length on the back. 

 Ears rather short, nearly hidden in the fur. Whiskers of medium 

 length, the shorter lower ones forming a thick shining white fringe 

 along the upper lip. On the head and back the wool-hair is of a 

 deep slaty blue for nine tenths of its length ; then follows a subter- 

 minal band of yellow ; and the extreme tip is black. Mixed with 



Fig. 1. 



Fig. 2. 



Left ear of Hesperomys coppingeri. 



Right foot of Hesperomys coppingeri. 



this wool-hair there are a considerable number of longer black hairs, 

 the resulting general colour being very similar to that of the common 

 Water-vole (Arvicola amphibius, L.). The dark colour of the 

 upperside extends on the limbs to the wrists and ankles, the feet 

 being covered with short shining white hairs. The ears are thickly 

 clothed with short woolly hairs similar in colour to the fur of the 

 back. On the sides the yellow tips of the hairs gradually become 

 lighter, and on the belly they are nearly pure white, the basal 

 portion of the fur, liowever, from the chin to the anus, still being 

 slate-coloured. 



' Cf. J. A. Allen, N. Amer. Pinnipeds, p. 210, 1880. 



