new Mammals from Luke Chad and the Congo. 'M9 



Hah. Lake Cliad. 



Type. An adult male. Original number 14. Collected 

 by (Japt. G. B. Gosling on the 9tli February, 1905. (Nine 

 specimens examined.) 



VVrougiiton, in his key to tlie genus Tatera (Ann. & Mag. 

 Nat. Hist. xvii. 1906, p. 477), placed Emini by itself at the 

 end of the N. -African forms as the only species with a band 

 of hair across the sole of the foot. Since then Thomas has 

 described Ilarn'vgtoni from Abyssinia (Ann. & Mag. Nat. 

 Hist, xviii., Oct. 1906, p. 303), which has the same character, 

 and the present is a third species to be now added to the 

 group. They may be fitted into Wroughton's key as 

 follows : — 



Sect. II. — B. b. bK Band of hair across sole of foot. 



a'. Size larger (bead and body 140 mm., hind foot 

 30). Colour darker ; lengthened haira of tail 

 extending over more than half its length. 

 Length of skull 3G mm. ; upper molar series 

 5-2 ; buUje 104 Umini. 



b*. Size larger (head and body 120 mm., hind 

 foot 30). Colour paler ; lengthened hairs of 

 tail extending over distal third of tail only. 

 Length of skull 30 mm. ; upper molar series 55 j 

 bullae 9 lacuatri$. 



c*. Size smaller (head and body 100 mm., hind 

 foot 28). Colour darker ; lengthened hairs 

 of tail extending over more than half its 

 length. Length of skull 307 mm. ; upper 

 molar series 43 ; bullae 9 Harringtoni. 



COLOMYS*, gen. nov. {Murince\ 



Like Malacoviys and Deomys in external form^ with simi- 

 larly elongated feet, but the skull wholly different from that 

 of either. Teeth strictly murine. 



General form light and slender. Ears large. Forearms 

 thin; thumb with a somewhat elongated nail. Hind limbs 

 also very slender, the feet much lengthened, especially in the 

 metatarsal region ; metatarsi apparently somewh;it loosely 

 bound together, as though thoy might splay out from each 

 other in walking on swampy soil. Tail of medium length, 

 very thinly haired, not pencilled. 



(Skull of medium proportions, not in the least elongate 

 as it is in Malacomys. Supraorbital and parietal regions 

 scarcely ridged. Anterior plate of zygoma-root not projected 

 forward, its front edge barely anterior to that of the 

 bridge above. Palatal foramina large and open, but on the 



• AcouXov, a limb. The Greek term for stilts, Ku>\6^a6pov, is based ou 

 this word. 



27* 



