THE FAMILIES AND GENERA OP BATS. 127 



Genus LONCHORHINA Tomes. 



1863. Lonchorhina Tomes, Proc. Zool. Soc. London, p. 81. 

 1878. Lonchorhina Dobson, Catal. C'hiropt. Brit. Mus., p. 461. 



Type-species. — Lonchorhina aurita Tomes. 



Geographic distribution. — West Indies (Trinidad and the Baha- 

 mas) and Venezuela. 

 Number of forms. — The type-species is at present unique. 

 Characters. — Dental formula : 



-23. 1.--34567 .2-2 1-1 2-2 3-3 QA 

 12^-1.-234567 % ¥^ ° l^V*™ 3^3' m S^T 34 " 



Teeth essentially as in Micronycteris except that crowns of lower 

 incisors are wider (width about equal to height), the outer upper 

 incisor has a distinctly hooked point close to inner tooth and a flattish 

 heel extending outward and backward, the second lower premolar 

 (pm 3 ) is smaller than either of the others, and the anterior upper 

 premolar is scarcely larger than outer incisor. Skull showing a 

 curious resemblance to that of Ghilonycteris; a distinct concavity at 

 base of rostrum between orbits ; dorsal profile of nasals strongly con- 

 vex, the anterior extremity of the bones projecting over the nares as 

 a conspicuous, slightly downward-curved point; middle of braincase 

 low, not rising conspicuously above occiput as in Micronycteris ; basi- 

 sphenoid pits very large and distinct, so carried forward that the an- 

 terior edge slightly overhangs; audital bullae small, as in Micronyc- 

 teris. Ears large, separate. Noseleaf very large, the horizontal 

 portion with thickened ridge in front of nasal openings. Tail much 

 longer than femur, produced to edge of wide interfemoral membrane. 



Species examined. — Lonchorhina aurita Tomes. 



Remarlts. — This strikingly characterized genus appears to be not 

 distantly related to Micronycteris and Otopterus, with which it agrees 

 fairly well in the structure of the teeth and, except for the peculiar 

 rostrum, in the form of the skull. The resemblance to Chilonycteris 

 pointed out by Dobson appears to be wholly superficial. 



Genus DOLICHOPHYLLUM Lydekker. 



1838. Macrophyllum Geay, Mag. Zool. and Bot, II, p. 489. Not Macrophylla 



Hope, 1837. 

 1878. Macrophyllum Dobson, Catal. Chiropt. Brit. Mus., p. 468. 

 1891. Dolichophylluin Lydekker, in Flower and Lydekker, Mammals, living 



and extinct, p. 673. 



Type-species. — Phyllostoma macrophyllum Wied. 



Geographic distribution. — Brazil. 



Number of forms. — Only the type species is thus far known. 



