ASPALAX. MAMMALIA. 123 



spots longitudinally, white below ; tail a little longer than the 

 body, with a tuft of brown hair. Hindostan. Desm. Mam. p. 321. 



G. Mgyptius, Desm. (Dipus pyramidum, Geoff.) Upper part of 

 the body bright yellow, under part pure white ; tail a little longer 

 than the body, brown, and terminated by a few long hairs. About 

 the size of a mouse. Egypt. Oliv. Voy. pi. 28. A, B, C. 



G. Canadensis, Desm. Canadian Gerbo, Shaw. Fur yellowish 

 above, white below ; ears short ; tail almost naked, rather longer 

 than the body. Inhabits Canada. Shaw, ii. pi. 161. 



G. Labradorius, Sabine. Fur brown above, white beneath, without 

 a dividing line ; toes four before, five behind ; tail more than half 

 the length of the body. Labrador. Faun. Amer. p 157 

 M. Rafinesque has named six other species of Gerbilli as natives of North America. 



These are the G. soricinus, megalops, leonurus^ Hudsonius, macrourus, and Irachy- 



urus. 



Gen 102. ASPALAX, Desm. Oliv. Spalax, Cuv. 



Incisors , canines g-g, molars f-f, = 16. Molars simple, 

 with blunt tubercles ; body long, cylindrical ; eyes very small, 

 and concealed by the skin; no external ears ; feet short, penta- 

 dactylous ; no tail. 



A. typhlus, Desm. (Mus lyphlus, Pall.) Fur ash-coloured, tin- 

 ted with reddish. Eight inches long. Asia Minor, &c. The 

 Aspalax or mole of the ancients. Pall. Glir. pi. 8. 



Var. with large irregular white spots. 



Gen. 103. BATHYERGUS,CUV. Mus 9 Pal. Orycterus. F.Cuv. 



Incisors f, canines g-g, molars f-f, = 20. Incisors very long, 

 broad ; molars slightly tuberculous, notched on the edges ; 

 body thick and cylindrical ; head thick ; muzzle truncated ; 

 eyes small ; no external ears ; feet short, pentadactyle, with 

 strong nails ; tail very short. 



B. maritimus, Desm. (Mus maritimus, Gmel.) Fur whitish gray ; 

 tail flat, covered with stiff hairs. About a foot long. Cape of 

 Good Hope. Shaw, ii. pi. 140. 



B. Capensis, Desm. (Mus Capensis, Pall.) Fur brown, with white 

 round the eyes and ears, on the tip of the head, and at the end 

 of the muzzle. About six inches long. Cape of Good Hope. 

 Shaw, ii. pi. 140. 



Gen. 104 PEDETES, Desm. Dipus 9 Gme\. Helamys, F.Cuv. 



Incisors f , canines g-g, molars f-f, = 20. Molars with a cy- 

 lindrical crown and a circle of enamel divided into two parts ; 

 head short, broad, and flat between the ears ; muzzle obtuse ; 

 ears long, thin, narrow, pointed; eyes large; no cheek-pouches; 

 whiskers large ; fore-feet short, with five toes and long nails ; 

 hind-feet very long, four-toed ; tail long, thick ; an abdominal 

 pouch, but not inclosing the teats. 



