On some of the Larger Species of (xeomys. 269 
Hab. Nassa, Speke Gulf, S. Victoria Nyanza. Coll. F.C. 
Smith, Esq. 
This hare seems to be a pallid form of the L.-capensis 
group, approximating in its general colour to L. é/grensis and 
some of the other northern species, but differing 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 which 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 Lepus microtist, 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. 
XLVI.—On some of the Larger Species of Geomys. 
By OLDFIELD THOMAS. 
OwrnaG 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-Americana ’ 
have had their skulls left in them until now. 
It is therefore not surprising 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 those referred to G‘. mewxi- 
canus. 
Of the G. hispidus group, with harsh hair, one species has 
roughly a skull length (basal) of almost 70 millim., while 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 which Dr. Matschie 
has kindly sent me the typical measurements. Finally the 
two original specimens of Gray’s ““Saccophorus quachil”’ prove 
* Proc. U.S. Nat. Mus. xv. p. 468 (1892). 
+ N. Act. Akad. Leopold. 1865, p. 32. 
Ann. & Mag. N. Hist. Ser. 6. Vol. xii. Dall 
