84 Mr. O. Thomas on 



Hind foot 52 mm. ; other dimensions not available. 



Hob. Misumba, Sankuru River, South Central Congo. 



Type. Adult skin without skull. B.M. no. 9. 12. 12. 5. 

 Collected and presented by E. Torday, Esq. 



This is the first Petrodrom us found within the Congo basin, 

 and its remarkably dark colour is no doubt the result of the 

 saturate conditions there prevailing. I have named it in 

 honour of its discoverer, to whom the Museum owes a number 

 of interesting mammals from this little-known region. 



Chrysochloris congicus, sp. n. 



Closely allied to C. leucorhina, Huet, from the coast of 

 French Congo, but markedly smaller (see skull-dimensions) 

 and of a different colour. Fur of medium length ; hairs of back 

 about 7 mm. in length. General colour dark "slate "'or 

 " mouse-grey " (Ridgway) instead of " brun chocolat fonce " 

 (Huet); under surface slightly paler. Face creamy white, as 

 in leucorhina. 



Dimensions of the type (measured on the spirit-speci- 

 men) : — < 



Head and body 63 mm. ; hind foot, s. u. 9, c. u. 11 ; 

 breadth of nasal pad 7. 



Skull: greatest length 19, greatest breadth 13'5; length 

 of upper tooth-row 7*4. 



Hub. Lusambo, Upper Sankuru R., South Central Congo. 

 Type. Subadult in spirit. B.M. no. 9. 12. 10. 2. Pre- 

 sented by the Liverpool School of Tropical Medicine. 

 Collected during Drs. Dutton and Todd's expedition. Two 

 skins without skulls collected at Misumba in the same 

 district have also been presented by Mr. E. Torday. 



This species is readily distinguishable from C. leucorhina 

 by its smaller size and different colour. In tooth-formula 

 tiiid the conspicuous white face it quite agrees with that 

 •animal. 



Chrysochloris vermiculus, sp. n. 



A species of about the size of C. leucorhina, but of a uni- 

 form pale brown colour, approximately "fawn' - ' of Ridgway, 

 a colour quite unlike that found in any other member of the 

 family. Under surface slightly lighter. Face quite uniform 

 with the body, not contrasted white as in leucorhina. Fur 

 of back 8 mm. in length. 



Skull and teeth u.iknown. 



Head and body, measured in skin, (c.) 105 mm. ; hind foot, 

 s. u. 9 5, c. u. 12. 



