NO. 1882. COLLECTION OF BATS FROM PANAMA— MILLER. 25 



HEMIDERMA PERSPICILLATUM AZTECUM Hahn. 



One specimen from the Cliilibiillo cave. 



VAMPYROPS HELLER! Peters. 



Two immature males from Cabima. Forearm 39 and 39.6 mm. 



VAMPYRESSA MINUTA, new species. 



Type. — Immature female (pennant dentition in place, but basal 

 suture not closed and finger joints not fully formed) in alcohol, Xo. 

 173S32, U.S.N.M. Collected at Cabima, Panama, May, 1911, by 

 August Busck. 



Diagnosis. — Noticeably smaller than Vampyressa pusiUa, as 

 described and figured by Peters; skull with brain case relatively 

 large and rostrum relatively short (this perhaps in part due to imma- 

 turity) ; teeth in general as figured by Peters, but with the following 

 pecuharities: Posterior upper premolar with postero-extemal cusp 

 less developed, its base not sufficiently projecting to produce a con- 

 cavity on hinder border of tooth; first upper molar with longitudinal 

 diameter through protocone about equal to length of outer border; 

 the large protocone almost isolated from inner border; second lower 

 molar with cro^vn more narrowed posteriorly. 



Color. — General color ecru-drab, clear below, overlaid with broc- 

 coU-brown above; white face markings barely indicated, the lower 

 stripe disappearing in certain lights. 



Meas^urements. — Head and body, 44 mm.; tibia, 11; foot, 7.5 

 forearm, 31.5; third finger, 70; fifth finger, 46; ear from meatus, 12 

 width of ear, 8; condylobasal length of skull, 16.2; greatest length 

 18; zygomatic breadth, 10; interorbital constriction, 4.4; mastoid 

 breadth, 9.2; breadth of brain case, 8; depth of brain case, at middle, 

 6.8; mandible, 11.2; maxillary tooth row, 5.6; mandibular tooth 

 row, 6. 



Specimen examined. — The type. 



CHIRODERMA ISTHMICUM, new species. 



Type.— Adult female (in alcohol), No. 173834, U.S.N.M. Collected 

 at Cabima, Panama, !May, 1911, by August Busck. 



Diagnosis. — Similar in size and essential characters to Chiroderma 

 viTlosuni Peters, but ear narrower above, back with an evident 

 whitish median stripe, and skull shorter and proportionally broader. 



External form. — As in C. viUosum as figured by Peters, but ear 

 narrowing gradually upward, its \videst region about at level of base 

 of anterior border. 



Color. — Upper parts isabella-color, the individual hairs broccoli- 

 brown (tlarkor than that of Riilgway) through basal tlnrd, tlien 

 abruptly light gray tinged with ochraceous-buii', the extreme tips 



