670 Bulletin American Museum of Natural History. [Vol. XXXV, 



but the unicuspids are slightly less oval, more roundish, and pm 4 is slightly less 

 lengthened, about as long as wide. Second and third unicuspids about of equal size 

 but third overlaps second and appears larger from a view of the crown surface. 



Measurements of type. — Total length, 130; tail vertebrae, 72; hind foot, 13; 

 ear, 9. Skull: Condylo-incisive length, 18.2; condylo-basal length, 17.5; greatest 

 breadth, 8.2; maxillary breadth, 5.2; least interorbital breadth, 3.8; mandible, 9.4; 

 entire upper tooth row, 7.8; entire lower tooth row, 7.3. 



The type and only specimen of this new species differs from all the 

 African forms of Crocidura with which I am familiar by its combination of 

 small size; long, hairy, penicillate tail, with longer bristle-hairs confined to 

 near base and few in number; and teeth of the dolichura group type. 



12. Crocidura congobelgica sp. now 

 (Plate VII, Fig. 6; IX, Figs. 3, 3a.) 



Type, No. 48512, Amer. Mus. Nat. Hist., skin and skull of adult c? (teeth little 

 worn) collected at Lubila, near Bafwasende, Belgian Congo, September 20, 1909, 

 by Herbert Lang and James P. Chapin. Orig. No. 122. 



A small, unicolored, dark brown shrew with long, black, naked tail. General 

 external appearance much as in Crocidura latona, but skull widely different, more as 

 in Crocidura lutrella, with large maxillary processes and rounded unicuspid teeth, the 

 second and third of about equal size. Tail nearly naked except for scattered short, 

 close-lying hairs and a very few longer bristles at base. 



Color. — Entire head and body, above and below, rich, glossy bister; the lower 

 sides and belly only very slightly lighter colored than the back. The upperparts are 

 very finely streaked with cinnamon buff. TJnderfur, above and below, pale smoke 

 gray. Whiskers long, mixed black and white. Hands and feet very thinly clothed 

 with brown hairs, darker along outer sides. Tail dull brownish black except near 

 extreme base below where it is slightly lighter. 



Skull and teeth. — The skull differs from those of other members of the naked- 

 tailed group in its comparatively great maxillary width. From above it greatly 

 resembles skulls of the otherwise very different C. lutrella Heller of Lado. The first 

 upper unicuspid is relatively larger, oval in crown pattern, with well developed cin- 

 gulum; second and third unicuspids about equal in size, the third squarely posterior 

 to, and somewhat overlapping, the second. In unworn condition these show the 

 small cusps and large cingula characteristic of the group. The last upper premolar 

 differs from that of other members of the group in its lack of conspicuous posterior 

 emargination, the median space between it and the first molar being very small; 

 the length of this tooth is about equal to its breadth, instead of much greater as usual 

 in the group. From the skull of C. latona (which species this one most resembles in 

 color and external characters) the skull of C. congobelgica may be separated readily 

 by its larger size, much wider palate, stronger maxillary processes, and considerably 

 larger teeth. 



Measurements of type, followed by dimensions of an older adult female from 

 Medje: Total length, 133, — ; tail vertebra-, 59, — ; hind foot, 14, 13. Skulls (the 



