MAMMALS OF ANGLO-EGYPTIAN SUDAN — SETZER 509 



of head and body 157 ClSO-lGO), 149 (140-156); length of tail 142 

 (131-152); 118 (112-129); length of hhid foot 31 (30-32), 30 (30); 

 length of ear 17 (14-19), 19 (17-21); gi-eatest length of skull 35.2 

 (34.2-36.0), 34.0 (32.4-34.8); condjdomcisive length 33.8 (33.1-34.3), 

 32.3 (31.1-33.0); length of anterior palatine foramina 7.6 (7.2-7.8), 

 7.4 (7.1-7.7); crown length of upper toothrow 6.4 (6.3-6.6), 6.5 (6.4- 

 6.6); greatest width across zygomatic arches 18.8 (18.7-19.0), 17.8 

 (17.4-18.1); least interorbital width 5.0 (4.9-5.3), 5.1 (4.9-5.3); length 

 of nasals 13.1 (12.7-13.6), 12.7 (12.4-13.2); width of rostrum at level 

 of antorbital foramen 4.3 (4.1-4.5), 4.3 (4.3). 



Remarks: All of the above specimens differ from A. n. luctuosus 

 in generally lighter color, smaller body size, and generally shorter tail. 

 The skulls differ in being longer and narrower, the auditory bullae 

 generally smaller, the anterior palatine foramina shorter, the upper 

 cheekteeth generally smaller, and the rostrum generally heavier in 

 appearance but not wider in actual measurement. 



Arvicanthis niloticus kordofanensis Wettstein 



Figure 6,6 



Arvica?ithis teslicularis kordofanensis Wettstein, Anz. K. Akad. Wiss. Wien, Math.- 

 Nat., vol. 53, p. 161, 1916. (Kadugli, southern Kordofau.) 



Specimens Examined: Twenty, all in BM, from: Talodi, 4; Nuba 

 Mts., 2; Um Dona, 2; El Fasher, 9;Koshek, 1; Lake No, 2. 



Measurements: The averages and extremes for three adult fe- 

 males from Talodi are as follows: Length of head and body 149.1 

 (144-156); length of tail 125 (115-130); length of hind foot 30 (30); 

 length of ear 16.3 (16-17); gi-eatest length of skull 33.9 (33.8-34.0); 

 condyloincisive length 32.7 (32.2-33.2); length of anterior palatine 

 foramina 7.5 (7.0-8.0) ; crown length of upper toothi-ow 6.9 (6.8-7.1) ; 

 greatest width across zygomatic arches 16.9 (16.7-17.2); least inter- 

 orbital width 5.5 (5.4-5.6); length of nasals 12.4 (12.4); width of 

 rostrum at level of antorbital foramen 4.3 (4.3). 



Remarks: The four specimens from Talodi may be assumed to be 

 virtual topotj^pes of this subspecies described from Kadugli. 



A. n. kordofanensis differs from A. n. testicularis in generally darker 

 color and in the somewhat darker hands, feet, and tail. The amount 

 of buff3^ coloration on the nose and around the eyes is reduced. The 

 belly color is buffy white with considerable admixture of blackish 

 hairs. The skull is smaller and more delicate than in testicularis, the 

 bullae are less inflated, and the anterior palatine foramina are less 

 flaring. 



The two specimens from Lake No do not agree in pelage color with 

 any of the other specimens referable to kordofanensis. The skulls, 



