1908.] DR. KNUD ANDERSEX OX EATS. 247 



no. 126451 ; and c? ad., teeth slightly worn, Colima, U.S. N. M. 

 no. 52091) m^ and its alveolus are wanting on one side, in none 

 on both sides. 



Nose-leaves. — Of eight specimens examined, four are preserved 

 in alcohol ; in one of these lattei: the front margin of the horse- 

 shoe is free, but narrow ; in three it is almost continuous with 

 the integument of the muzzle. Thus there is in this species the 

 same variation in this respect as in A. 2)la7iirosiris (p. 235) and 

 A. jamaicensis (p. 253). 



Tragus. — About three small, rounded, sometimes almost obsolete 

 serrations above the median projection. 



Wings. — The metacarpals and phalanges (especially the proximal 

 phalanges) are proportionately a Httle shorter than in A. plani- 

 rostris. The wing-indices on p. 310 and the table of measure- 

 ments, p. 246, show the details. 



Hairing on limbs and interfennoral. — Difierent from A. plani- 

 rostris. The whole of the interfemoral (above and below) right 

 to the posterior margin, and the upper side of the femur, tibia, 

 and foot are densely haired. 



Colour. — General impression : much more drab above and 

 lighter beneath than in any phase of A. 2)lanirostris. 



Upper side dark drab or brownish drab, with very short, almost 

 greyish-drab tips to the hairs, giving the whole of the upper side 

 a peculiarly silvery tinge ; base of hairs of hinder back grey with 

 a tinge of ecru-drab, in the shoulder region and on the neck 

 noticeably lighter, whitish ecru-drab. Under side smoke-grey 

 with conspicuous white tips to the hairs. Supraorbital stripes 

 indistinct or none. 



Specimens examined. — 8 specimens (4 skins), with skulls, from 

 the following localities : — Michoacan : La Salada (3) ; Colima : 

 Colima (3); Jalisco: Etzatlan (1); W. Mexico (1).— All from the 

 collection of the U.S. National Museum*. 



Range. — As yet only known from the States of Michoacan, 

 Colima, and Jalisco, Mexico. 



Artibeus jamaicexsis Leach, 



Diagnosis. — Molars g. Maxillary tooth-row 9*3-12-2 mm. 

 Forearm 54-76 mm. 



Skidl. — Similar in shape to that of A. planirostris. In the 

 largest race of A. jamaicensis (viz. A. j. lituratus) the size of the 

 skull is practically as in the largest form of A. i^lanirostris {A. p. 

 fallax), though averaging still a trifle more heavily built ; so 

 complete is the resemblance that certain skulls of A. j. litujratus 

 would be indistinguishable from those of A. planirostris, were it 

 not for the absence of the small m^. In the smallest races of 

 A. jamaicensis {A. j. p><^'^i^ipGS and yucatanicus) the skull is as 

 small and delicately built as (or, if anything, still smaller than) 

 in A . planirostris trinitatis or A . hirsutus. 



The skull, especially its facial portion, is in certain races of 



* U.S. N. M. nos. 9052 (36860), 52063, 52091, 52092, 52101, 126448-49 

 126451. 



