neio African Mammals. 81 



of L, Imhausi, and with Mr. Rhoads's description * of 

 L. SmitMi, convinces me that tlie E. -African form is quite 

 distinct from the others, and I woukl propose to call it 

 Lophiomys testudo. 



Size smaller than in L. Imhausi, larger than in L. Smilhii. 

 Long hairs of back about Qb mm. in length, broadly tipped 

 with white on body, limbs, and tail. Underfur about 45- 

 50 mm. long, as compared to 20 in L. Smithii, the length to 

 tlie base of the black terminal band about 27 mm. Basal 

 third of the underfur dark brown, middle third white, tip 

 blacky the contrast between the colours more marked than in 

 L. Imhausi. Suborbital white spot well marked. Dark band 

 dividing the frontal from the auricular white patch scarcely 

 perceptible. Inner aspect of ears broadly margined above 

 with white, but the lower lialf is dark brown, including the 

 base of the outer margin. Hairs of lateral line olive. 

 Under surface hoary grey, not darker along the median line. 

 Upper surface of hands and feet blackish. Tail with its 

 underfur mixed whitish and black, the tip for a length of 

 about half an inch sharply contrasted white. 



Skull larger and, especially, markedly broader than in 

 L. Smithii. Nasals narrower behind than in front. Inter- 

 orbital more than half the total frontal breadth. Small key- 

 stone portion of squamosals separating the frontals from the 

 rugose wing of the molars long antero-posteriorly (4*5 ram.), 

 narrow (2 mm.) transversely. A marked angular concavity 

 on the outer side of the maxillary zygomatic process just in 

 front of the anterior angle of the malar. Palatal foramina 

 comparatively short, ending just anterior to the front edge 

 of »i\ 



Dimensions of the type (measured in the flesh) : — 



Head and body 296 mm. ; tail 176 ; hind foot 44 ; ear 29. 



Skull : greatest length 5b'2 ; basilar length 47*4 ; greatest 

 breadth 37"5 ; nasals, length 20"5, anterior breadth 8"8, pos- 

 terior breadth 7'5 ; interorbital breadth 13*5; greatest frontal 

 breadth 24"2 ; palate length 2'7 ; diastema 15"1 ; palatal 

 foramina 9*3 x 4'3 ; length of upper molar series 12'6. 



Hah. (of type). E-avine Station, British East Africa. 

 Mr. Betton^s specimens from El Burgon Station and Mile 513 

 of the Uganda Railway. 



T^Jpe. Female. B.M. no. 99. 8. 4. 97. Collected loth 

 Llarch, 1898, and presented by Mr. F. J. Jackson. 



This East-African representative of the genus Lophiomtfs 

 differs from its nearest ally, L. Smithii^ Rhoads, by its longer 



* Pr. Ac. Philad. 1896, p. 524. 

 Ann. & Mag. N. Hist. Ser. 7. Vol. xv. 6 



