208 



DR. KNUD ANDERSEN ON BATS. 



[Apr. 7, 



breadth and height (the outer pair, if anything, faintly shorter) ; 

 antero-posterior diameter of crown mnch greater than trans- 

 verse diameter ; front face slightly concave from side to side, as 

 is also the cutting-edge ; this latter circumstance gives the teeth 

 in front view a slight indication of a bifid shape. 



Text-fi^. 41. 



Artibeus planirostris fallax, $ ad. Kaiiuku Mts., British Guiana. 

 B.M. 1.6.4.60. 



A. Right uppei-, B. Left lower tooth-row ; C. Side view of skull and mandible; 

 D. Front view of incisors and canines. A, B, D X xj C X f. 



For explanation of lettering of cusps (1, 2, 3, 4, 5, 6, 7) see text, p. 205. 



Upper canines (text-figs. 41 A, d). — Yery long ; cingulum low, 

 terminating abruptly in front and behind, but not developing 

 distinct secondary cusps ; on the lingual face of the canine the 

 cingulum is somewhat expanded, forming a noticeable shelf-like 

 projection ; against this expansion of the cingulum works the 

 principal cusp (cusp 4) of the lower p, . Hinder margin of canine 



