1916.] Hollister, Shrews Collected by the Congo Expedition. 665 



A medium sized, very dark brown, dark bellied, small footed species, with thinly- 

 haired tail and with only a few long bristle hairs near base of tail. 



Color. — Entire head and body, above and below, dark brown, near to clove 

 brown ; the upperparts very slightly brighter or more brownish, less smoky, than the 

 belly; but there is no distinct line of demarcation nor noticeable difference in the 

 shade of color above and below. The slightly brighter appearance of the back is 

 due to a faint speckling in the hair of cinnamon or deep buff. Fur short and close, 

 the undercolor deep neutral gray. Hands and feet brown, the digits yellowish. 

 Tail blackish brown, slightly paler at base below, appearing naked but sparingly 

 clothed with very short hairs; a very few longer hairs near base. 



Skull and teeth. — Skull strongly built, with heavy maxillary processes. Brain- 

 case short, wider than long, with sharp, angular corners and straight sides. Teeth 

 large; unicuspids from crown view very broad; third uni cuspid distinctly larger 

 than second, especially broader across crown; the teeth all crowded in the row and 

 unicuspids overlapping. Upper last premolar (pm 4 ) long as wide. The teeth thus 

 differ conspicuously from the type usual to the naked-tailed species of the dolichura 

 group and most resemble those of the forms in the turba group. 



Measurements of type. — Total length, 125; tail vertebrae, 54; hind foot, 12 (dry, 

 without claws, 11.6); ear, 9. Skull: Condylo-incisive length, 21.3; condylo-basal 

 length, 20.6; greatest breadth, 9.5; maxillary breadth, 6.9; least interorbital breadth, 

 4.4; mandible, 11.8. Teeth: Entire upper row, 10; front of pm 4 to back of m 2 , 5.4; 

 entire lower row, 9.3. 



The combination of dark color above and below, absence of long hairs 

 on tail except at base, small hind foot, short braincase, and large, roundish 

 unicuspid teeth, makes this species easy to recognize among the other 

 shrews known from the region. The species evidently belongs in that group 

 which includes poensis and batesi, and is not related closely to the other 

 bare-tailed species from Medje. It is represented only by the type speci- 

 men. 



6. Crocidura jacksoni denti Dollman. 



Plate X, Fig. 2. 



1915. [Crocidura] j[acksoni] denti Dollman, Ann. and Mag. Nat. Hist., Ser. 8, 

 Vol. 15, p. 516. May. (Between Mawambi and Avakubi, Congo.) 



Seventy-one specimens, including nine in alcohol, from localities as fol- 

 lows: Avakubi, 6; Babeyru, 1 in alcohol; Bafw T abaka, 1; Faradje, 5; 

 Gamangui, 2; Medje, 51; Nala, 3 in alcohol; Niangara, 2. 



There are specimens in this fine series collected in nearly all the months 

 of the year. As a consequence there is great diversity in color, the skins 

 in the dark, fresh coat and those in the reddish stages of extreme wear 

 contrasting greatly. Several very young examples show all the range of 

 variation exhibited by the adults; the first juvenile coat evidently fades 



