H() ZOOLOGY. 



II. GYMNORHINA. 



Bats without upright appendage on nose. 



A. Nostrils circular; wing-membranes narrow; tail 



cither much longer or shorter than interfemoral 



membrane Noctilionidal. 



B. Nostrils subelliptical; wing-membranes ample; tail 



inclosed in interfemoral membrane ; the final joint 



only in some instances exserted VESPERTILIONIDAK. 



Fam. phyllostomatidae. 



ILcaii-i&osed Bats. 



Chars. — llostrum surmounted by an upright appendage. This expression, though 

 not diagnostic of the family among all its allies, distinguishes our representative from 

 other North American bats. 



Genus MACROTUS, Gray. 



Macrotus, Gray, Proc. Zool. Soc, 1843, 21.— Allen, Mouog, 1. 



9 9 1-1 °-° °.- r> . ITi 



Chars.— Teeth: I., p±i C, ii; P., %-^\ M., %± = ~ = 34. Skull papery, witb 



inflated cranial and tapering rostral portion and slight sagittal crest. Nose-leaf simple, 

 erect, acuminate, triangular. Under lip cleft. Ears large, joined. End of tail ex- 

 serted beyond interfemoral membrane. 



MAOEOTUS WATERHOUSII, Gray. 



Leaf-fiiosecl Hail. 



Macrotus waterhousii, Gray, Proc. Zool. Soc. Lond., 1843, 21. 



Macrotus califomicus, Baird, Proc. I'liila. Acad., 1858, 117; Rep. Mex. B. Surv., 1859, 



ii, 4, pi. i, f. 2. — II. Allen, Monog., 3. — Coues, Am. Nat., i, 1867, 283. 

 Macrotus mexicanus, De Sausstjre, Rev. Mag. Zool., 1860, 486. 

 " Megadermatidce, sp. .'", J. A. Allen, Bull. Mus. Comp. Zool., iii. 175. 



Chars. — Central upper incisors large, chisel-shaped; the lateral small, pointed, 

 converging; canines small, simple; anterior premolar thin, compressed, unicuspid, 

 with small posterior basal snag ; lower incisors crowded, obscurely trilobed ; canines 

 with basal snag; first and second premolars with basal ridge. Head long; face hairy; 

 head nearly naked behind junction of the ears; eyes rather large, almond-shaped ; 

 nose-leaf acuminate, higher than broad; ears very large, oval, sparsely hairy, joined 

 by a membrane. Tragus lanceolate ; not quite half as high as auricle. Under lip 

 cleft. Thumb slender, long. End of tail exserted. II eel large. Wing-membrane reach 

 ing ankle. Color grizzled or watered — the fur indistinctly tricolor — at base white, 

 then fawn; at the tips gray on the upper parts of the body; white below. Length 

 to end of tail, 3^-4 inches; expanse, 10-11 ; tail, 1^-lf; ear, about 1 high; fore-arm, 

 1&-2; shin, ?■_> : nose-leaf, 1 high. 



HABITAT. — West Indies, Mexico, and southern border of the United States. 



