MAMMALS OF ANGLO-EGYPTIAN SUDAN — SETZER 525 



there should be such a hiatus in distribution for this species and it 

 may well be that the specific determination is erroneous. As pointed 

 out elsewhere, these nomenclatorial problems can be resolved only by 

 a competent revision. 



Praomys butleri (Wroughton) 



Figure 7,b 



Mus butleri Wroughton, Ann. Mag. Nat. Hist., ser. 7, vol. 20, p. 503, December 

 1907. (Between Chak Chak and Dem Zubeir, Bahr-el-Ghazal.) 



Specimen Examined: The type. 



Measurements: The type, an adult female, has the following 

 measurements: Length of head of body 90; length of tail 118; length of 

 hind foot 20; length of ear 16; greatest length of skull 26.4; condy- 

 loincisive length 24.5; length of anterior palatine foramina 6.1; crown 

 length of upper toothrow 4.4; least interorbital width 4.1; width of 

 rostrum at level of antorbital foramen 3.4; length of nasals 9.3. 



Remarks: The type and only known specimen is reddish brown with 

 white underparts and white hands and feet. The hairs of the belly are 

 white to the base. There is a faint suggestion of a dorsal area darker 

 than the color of the sides, thus giving the animal the appearance of 

 having a stripe down the back. 



Ellerman (1941, p. 209) placed butleri as a full species under the 

 subgenus Praomys in the genus Rattus. Until further information is 

 available I feel it is best to regard this specimen as a valid species of 

 the genus Praomys. Therefore, I do not follow Allen in allocating it to 

 subspecific status under the species denniae, which is also referred to 

 the genus Praomys. 



Praomys fumatus oweni, new subspecies 



Figure 7,b 



Type: MCZ No. 45883, adult male, skin and skull, from Muru- 

 kurun, 50 miles east of Torit, Torit District, Equatoria Province, 

 Anglo-Egyptian Sudan. Obtained May 9, 1950, by John S. Owen, 

 origmal No. 1030. 



Specimens Examined: Eighteen, all in MCZ, from: Lafon, 4; 

 Murukurun, 1; LalaDga, eastern Lofit Hills, 1; Gilo, Imatong Moun- 

 tains, 1; Ikoto, 2; Labalwa, 4; Loa, 1; Okaru, 3; Opari, 1. 



Diagnosis: General over-all dorsal color near Snuff Brown; pure 

 color on shoulders near Cinnamon-Buff; dorsal color ending abruptly 

 on sides, cheeks, upper arm, and leg in the pure white of the belly, 

 throat, chin, and under sides of the forelimbs and hindlimbs; all hairs 

 of underparts white to base; dorsal surfaces of hands and feet white. 

 Skull relatively long and narrow; anterior palatine foramina long; 



