On some of the Larger Species of (yQomys,. 269 



Ilah. Xassa, Speke Gulf, S. Victoria Njanza. Coll. F. G. 

 Smith, Esq. 



Tliis hare seems to be a pallid form of the L.-capensis 

 group, approximating in its general colour to L. tigrensis and 

 some of the other northern species, but differ ing from these 

 latter by its shorter ears, which are of only about the same 

 length as in L. capensis. The hare of Mount Kilima-njaro, 

 of Avhich the Museum owes a specimen to Messrs. Rowland 

 Ward and Co., appears to be so closely allied in colour and 

 proportions to the typical L. capensis that I agree with 

 Mr. True * that it should be referred to that species. 



Heuglin's Lepiis lyiicrotis'f, from the Bahr-el-Gazal, in 

 7° N., 30° E., is clearly founded on so young a specimen that 

 it will probably never be satisfactorily determinable ; but, 

 whatever it may prove to be, its more rufous colouring and 

 shorter ears appear to separate it from L. victorie. 



XLYI. — On some of the Larger Species o/'Geomys. 

 By Oldfield Thomas. 



Owing to the impression prevailing until quite recently that 

 the species of Geomys might be easily and satisfactorily deter- 

 mined merely by the characters presented by the grooves on 

 their incisor teeth, their skulls have been but little attended 

 to by authors in general, while, so far as the British Museum 

 material is concerned, the skins examined by Mr. Alston 

 during the preparation of the ' Biologia Centrali-Araericana ' 

 have had their skulls left in them until now. 



It is therefore not surprisiiig that, on extracting a series of 

 skulls, the specimens referred to G. hispidus prove to belong 

 to two perfectly distinct species, a large and a small ; and 

 the same appears to be the case with tiiose referred to G. mexi- 

 canus. 



Of the G. hispidus group, with harsh hair, one species lias 

 roughly a skull length (basal) of almost 70 millim., wiiile the 

 smaller has this same dimension at most only about 56 or 

 58 millim. To this latter species there belong the original 

 G. hispidus of Le Conte, as shown by Baird's description of 

 the type, and also Peters's G. heterodus, of wiiich Dr. Matschie 

 has kindly sent me the typical measurements. Finally the 

 two original specimens of (jrrsLy^s"Saccophorus quachir^ prove 



* Proc. U. S. Nat. Mas. xv. p. 468 (1892^. 

 t N. Act. Akad. Leopold. 18tio, p. 32. 



Anil, (f- ^fag. N. /list. Ser. 6. Vol. xii. 21 



