Miller — Three New Bats from the Island of Cttraaio. 127 



Feet. — The feet are large and strong, about two thirds length of tibia. 

 Toes essentially equal in length, slightly longer than metacarpals, armed 

 with hwge strong claws, the latter equal to about one third of rest of 

 foot, t'alcar distinct, (i mm. in length. 



Fur (I lid r<il<>i\—T\\e fur is short, dense and velvety, that on middle of 

 bick about 4 mm. in length. It is closely confined to body, reaching 

 membranes in a very narrow line only. On humerus it extends over 

 pro\im;il half both above and below. Dorsal .surface of forearm densely 

 bvit inconspicuously furred. Under surface of forearm and of propata- 

 gium and both sides of uropatagium scantly haired. 



Color after three months immersion in formalin liair brown witli a 

 faint bluish cast, slightly paler on ventral surface, the hairs everywhere 

 ecru dral>at base. Ears and membranes dark brown. 



Skull. — The skull is slightly larger than that of Lepti>iiiirtn-ix iiindix, 

 and the rostrum is a little deeper, but otherwise 1 can detect no cranial 

 characters to separate the two species. 



7Wf/i. — Upper incisors large and evenly spaced, not in two pairs sepa- 

 rated by a, distinct median gap as in L. iitctili.'<. These teeth project so 

 strongly forward that the entire anterior face is visible when skull is 

 viewed directly from above. Maxillary teeth essentially as in L. nindix. 

 Lower incisors larger than in /.. >i/riili.'< the lateral pairs less widely sepa- 

 rated. Second lower premolar distinctly crescentic when viewed from 

 its apex, the concavity directed inward. In L. nicalis this tootli is 

 straight. Mandibular molars not peculiar. 



MiKxHrnncntx. — External measurements of type: head and body, 70 

 (75)*: tibia, 20 (22): foot, lo (14.(5): foot without claws, 12.8 (12): calcar. 

 6(6); forearm, 53 (55); thumb, 10(11): longest finger, 96 (08) : ear from 

 meatus, 15.6 (16>; ear from crown, 11.6 (12.8); width of ear, 12 (11); 

 tragus, <) (6:2): height of noseleaf posteriorly. 3 (3); greatest width of 

 noseleaf, 3.4 (4). 



Cranial measurements of type: greatest length, 26 (27): basal length, 

 25 (25.6); basilar length, 22.4 (23.6); zygomatic breadth, 11 (11); interor- 

 bital breadth, 5 (5); mastoid breadth, 10.6 (10.8): breadth of braincase 

 above roots of zygomatai, 10 (10): greatest depth' of braincase, 8 (8): 

 depth of rostrum between orbits, 3.2 (4): mandible, 17.4 (17.4); upper 

 toothrow (exclusive of incisors), (8.6): lower toothrow (exclusive of 

 incisors), 9.9 (9). 



Eeiiiin-kx. — The most prominent character of this species is tlie regu- 

 lar spacing of the upper incisors. The color is darker than tliat of the 

 Mexican animal, in wliich the peculiar bluish cast is quite absent. In 

 L. niridix the legs and interfemoral membrane are noticeably sprinkled 

 with hairs 5 mm. in length which produce a distinctly shaggy appear- 

 ance. These hairs are reduced to an inconspicuous pubescense in L. 

 riiritxii/f. 



*Measurements in parenthesis are those of an adult male Leptonyderts 

 nivalis from Colima, Mexico. 



28— BiOL. Soc. Wash. Vol. XIII, 1900. 



