524 PROCEEDINGS OF THE ACADEMY OF [1896, 



Two, quarter-grown young, male and female, in alcohol, are colored 

 like the adults on head and fore-limbs, the rest of the body above is 

 sandy-brown, the outer tail hairs are dull white, the upper vertebral 

 line of tail showing short black and rusty hairs. The tail (without 

 hairs) is about the length of body without head. Its tip is blunt 

 and the whole organ viewed from above is remarkably triangular,, 

 measuring across base, in the spirit specimen, about 30 mm. and 

 tapering evenly to the point. The tail is much flattened and 

 a strongly depressed vertebral line above and below separates the 

 thickened, rounded fleshy sides. The external sexual organs of the 

 young male are very strongly developed. 



In adult suckling females the teats are very long (8 to 12 mm.),^ 

 2 abdominal, 2 inguinal. 



Specimens in the collection of the Academy of Natural Sciences 

 of Philadelphia. 



No. 3,804 S , El Dere, March, 23, 1895. 



No. 3,805 ^,Milmil, July 27, 1894. 



No. 3,806 9, Shebeli, August, 29, 1894. 



No. 3,807 9 , Hargesa, July 17, 1894. 



No. 3,808 9 , Hargesa, July 18, 1894. 



No. 3,859 Juv. 9 , Hargesa, July 18, 1894. 



No. 3,860 Juv. ^ , Hargesa July 18, 1894. 



27. Lophiomys smithi sp. nov. Smith's Maned Rat. Plate XXV. 



Type, Ad. $ , No. 3,803, Museum Academy of Natural Sciences of 

 Philadelphia. Collected at Sheikh Husein, West Somaliland (about 

 lat. N. 8°, long. E. 41°), Africa, by Dr. A. Donaldson Smith, Sept. 

 30, 1894. 



Description — Smaller than L. imhausi ; tail shorter than body 

 without head, not tufied. White crown and ear patch separated by 

 a black band. Nasals narrow at base ; interorbital width of frontals 

 less than half their postorbital width. Jugal and frontal processes 

 not separated by the squamosal. 



Color— above, from neck to base of tail and down to dividing 

 lateral band of brown, iron-gray, the fur composed of two kinds: 

 first, a very fine silken under fur about 20 mm. long, composed of 

 white hairs, a few of which are wholly white but about 70 per cent, 

 are brownish-black at the basal half Among these are evenly in- 

 terspersed, in the proportion of about one to eighty, slender bristling 

 hairs, 60 to 65 mm. long. The basal fifth of these hairs is black. 



