new African Rodents. 591 



Skull decidedly larger than that of E. aUeni, t!ic brain- 

 case much longer, but not, as is the case in the next species, 

 much broader. Supraorbital edges square, but vvitliout 

 beading. Palatal foramina longer than in E. allenf, and 

 bullae larger. 



Dimensions of the type (measured as a spirit-specimen 

 before skinning) : — 



Head and body 77 mm. ; tail 140 ; hind foot 17'5 ; ear 15. 



Skull : greatest length 21-8 ; condylo-incisive length 23"4 ; 

 zygomatic breadth 1*2"3 ; iia-als 8"2 ; interoibital breadtli 4-3 ; 

 breadth of brain-case 11*2 ; palatilar length lOG ; palatal 

 foramina 5*1 ; npper molar series 4. 



Hab. Congo and Cameioons. Type from the Ituri Forest 

 between Mawambi and Avakubi, Eastern Congo. Others 

 from Efulen and Ja River, Cameroons. 



Type. Adult female. }^.M. no. 7. 1. 2. 23. Collected in 

 1906 by E. B. Woosnam, and presented by the Subscribers 

 to the Kuwenzori Expedition. 



Compared with the true E. alleni of Fernando To (of 

 which the Fernando Po Expedition of 1904 obtained an adult 

 topotype clearly identical with the young tj'pe of the species) 

 this mainland form is markedly larger, with a longer brain- 

 case, and has not the dispro|)ortionally short muzzle of that 

 form. From E. carillus it differs by having 8 instead of 6 

 mam rage. 



Epimjjs ceta, sp. n. 



General appearance of E. alleni. Brain-case very large 

 and broad. 



Proportions as in E. alleni. Colour above rather more 

 buffy than " wood-brown " ; sides clearer bufFy, forming a 

 buffy line along the edge of the abdominal colour, which is 

 well-defined white, the bases of the hairs pale slaty. Ears 

 rather smaller than in alleni, grey-brown. Hands whitish ; 

 feet with whitish edges and digits, middle line of metatarsus 

 darker. Tail uniformly brown. 



Skull with a very large brain-case, shaped somewhat like 

 that of a Nyctomys ; the interorbital region broad, with well- 

 defined supraorbital beads, which extend backwards half 

 across the parietals. Muzzle small and slender. Ante- 

 orbital plate very slightly projected forward, though more so 

 than in alleni. Palatal foramina longer and bullae larger 

 than in alleni. Molars narrow, of the rather Uromys-Vike 

 shape found in this group of mice ; inner cusp of second 

 lamina of m^ and wr elongated antero-posteriorly. 



