rodentiA. 
Mamm . 35 
10. Chinchillidjj. 
iPerimys impactus, cumulus , pacificus , reflexus , and diminutus , n. spp., 
Ameghino, Bol. Ac. Cordoba, xiii, pp. 328 & 329, Tertiary, Patagonia. 
\ Prolog ostomus ampins, n. sp., Ameghino, t. c. p. 329, ibid. 
t Dicar dia proximo, n. sp., Ameghino, t. c. p. 330, ibid. 
11. CaVIIDAC. 
Cavia cobaya , recorded by Gregorio, supra , p. 8, from a French cave. 
For interbreeding of different species, see Neiiring, supra , p. 14. 
12. HYSTRICIDiE* 
Atherura africana , Parsons, P. Zool. Soc. London, 1894, p. 251, compares 
its anatomy with other Porcupines. In addition to the points 
mentioned by Gray and Gunther, as differences between the skulls of 
A. africana and A. macrura , the arrangement of tne fronto-nasal 
suture, the position of the maxillomalar suture, and the frequent 
presence of an “ os anti-epilepticum ” are noticed. The presence of 
intercentra is also drawn attention to. The muscles in the main bear 
out the remarks already published bj' the author in his paper on 
“ Tho Myology of the Sciuromorphine and Ilystricomorphino 
Rodents.” The liver agrees with that of Hystrix cristata and H. 
javanica in having the left central lobe divided into two. There is 
no gall-bladder. The lungs are specially remarkable for being divided 
up into a large number of lobes, there being 34 lobes on the left, and 
over 40 on the right side. 
Tricky s fasciculata, Jentink, Notes Leyden Mus. xvi* p. 205, regards this 
as the proper name for T. guentheri. 
13. LAGOMYIDiE. 
Lagomys hoslouii , n. sp., Buchner, Result. Przewalski Reisen. Saugeth. i, 
p. 187, pis. xxii & xxiii ; other species also described and figured. 
14. Leporidas. 
Lcptus amcricanus , its seasonal colour-change, Allen, Bull. Amer. Mus. 
vi, p. 107 ; due to change of pigment. 
Lepus sylvaticus mearnsi , p. 171, Iowa and Minnesota, s. pinetus , p. 348, 
White Mountains, texianus eremicus , p. 347, Arizona, n. subspp., 
Allen, t. c. 
Lepus swhikoei , n. sp., Thomas, Ann. Nat. Hist. (6) xiii, p. 364, Cheefoo. 
Lepus nigronuchalis , n. sp., Hartert, Nov. Zool. i, p. 40, Venezuela. 
Lepus wkitei , p. 142, Nyasaland, omanensis , p. 450, Oman, S. E. Arabia, 
n. spp., Thomas, P. Zool. Soc. London, 1894. 
