1916.] Hollister, Shrews Collected by the Congo Expedition. 671 



occiput of the type skull is damaged): Condylo-incisive length, — , 20.7; condylo- 

 basal length, — , 20.0; greatest breadth, — , 9.1; maxillary breadth, 7.0, 6.9; least 

 interorbital breadth, 4.3, 4.2; palatal length, 8.9, 8.8; mandible, 10.7, 11.2; entire 

 upper tooth row, 9.1, 9.3; front of pm A to back of m 2 , 5.0, 5.0; entire lower tooth row, 



8.4, 8.8. 



There are only two specimens of Crocidura congobelgica in the collection, 

 the type from Lubila and a specimen from Medje. Owing to the fact that 

 these skins so closely resemble skins of C. latona, above described, it was with 

 some hesitation that I decided to recognize by name tw r o distinct species. 

 Skulls of the two animals are so very different that no other course seems 

 open. Though both obviously belong to the same group of bare-tailed 

 species, the skull of the old adult male latona is much smaller than a younger 

 female skull of congobelgica, and the other characters, as given above, point 

 to certain specific difference between the tw T o forms. The peculiar colora- 

 tion is found, so far as I am aware, only in this group of species, and the 

 long, black, almost hairless tail further instantly separates the tw T o species 

 from other shrews of the same general size. 



13. Sylvisorex gemmeus irene Thomas. 



1915. Sylvisorex gemmeus irene Thomas, Ann. and Mag. Nat. Hist., Ser. 8, Vol. 16, 

 p. 151. August. (Kaganbah, Uganda.) 



Eighteen specimens, including four young in alcohol, from Medje, and 

 one specimen from Farad je. 



Compared with skins of typical gemmeus from Lado, these specimens 

 average considerably more browmish, less gray in color; but the forms are 

 certainly very closely related and the skulls seem indistinguishable. The 

 type locality of this subspecies is in southern Uganda, but Mr. Thomas has 

 already recorded specimens from the Uelle and Ituri valleys. 1 The specimen 

 listed above from Faradje is like those from Medje and show^s no approach 

 in color to the Lado form. 



The collectors note three pairs of mammae for this shrew r . They found 

 two large embryos in a female collected at Medje, January 18; and two 

 medium sized embryos in a female from the same place on January 20. 



1 Ann. and Mag. Xat. Hist., Ser. 8, Vol. 16, pp. 151 and 471, August and December, 1915. 



