Rodents from Angola. 323 
Georychus Mechow?, Peters. 
Georychus Mechowit, Peters, Jorn. Sci. Lisb. 1890, p. 271. 
One female, Galanga. 
It is much to be regretted that the skull of this fine speci- 
men is badly broken, as it is the largest Georychus skull yet 
received in the British Museum, exceeding that of the one 
figured by Prof. Bocage. 
Georychus Bocaget, sp. n. 
Colour pale grey-drab, almost silver-grey ; a deep purple 
stain at the corners of the mouth (no doubt due to the nature 
of its food). Head very large, measuring about one third of 
the total length. No white occipital spot (?). 
Type ¢ (aged) in al., B.M. no. 97. 8. 6. 22.° 
Hanha, Angola. 
Head and body 150 millim.; tail 15; hind foot 25. 
Skull: greatest length 39 millim.; greatest breadth 30 ; 
temporal constriction 9; brain-case 15°5; nasals 15 x 3°5; 
basal length 35; henselion to back of palate 23; diastema 
13:2; molar series 6; outside ™! 7. Mandible, greatest 
length of bone 30°5, height at coronoid 17. 
The skull is broader and stronger than that of G. hotten- 
tottus, but the zygomata are not bowed out in the anterior 
portion so much as in that species or G. damarensis, but, like 
the latter, the inner face of the arch is turned upwards. The 
infraorbital foramina are long and narrow, broadest in the 
lower portion, the outer wall thin or moderate. Intermax- 
illary processes extending on the forehead rather beyond the 
nasals, the latter narrowing posteriorly and ending in a point 
in the middle line. ‘The tooth-row appears to be somewhat 
shorter than in G‘. hottentottus ; the palate ends posteriorly in 
a projecting point in the middle line. 
I name this species in honour of the distinguished natu- 
ralist who has done so much in advancing our knowledge of 
the tauna of Angola. There are in the present collection ten 
specimens from various localities. 
In working out the Angolan Georycht I fully appreciate 
the difficulties mentioned by Prof. Bocage (Jorn. Sci. Lisb. 
1890, 2 ser. iv. p. 269), and have come to very much the same 
conelusions. Without definitely separating the forms, that 
from Hanha is described as a new species, a fully adult speci- 
men being taken as the type. When more complete series are 
obtained the various forms may be found to be separable into 
local subspecies; but as fully adult specimens are still 
wanting from several of the localities, I do not see my way 
at present to divide them. 
