NO. 1514. REVIEW OF THE BAT GENUS HEMIDERMA—HAHN. 



Ill 



no intermediates, I should unhesitatingly say that the extremes belong 

 to two distinct species. The Ecuador specimens also show some 

 variation from those from other localities, the rostrum being very 

 broad and short, with the brain-case long and expanded basally. 

 Skulls of the two specimens seen from British Guiana are larger than 

 any others from South America, and in this respect approach the 

 subspecies aztecum. Two adult specimens from the island of Redonda 

 closely resemble those from Trinidad, whence they have undoubtedl}" 

 been derived. 



Table of average skin iaea,snreinents, in millimeters, of Heniiderma j>erspi€illatum. 



Table of average cranial measurements, in millimeters, of Hemiderma perspicillatum. 



Locality. 



Sapucay , Paraguay 



Sao Paulo, Brazil 



Maranliao, Brazil 



Trinidad 



Berbice, British Guiana 



Ciudad Bolivarand Maripa, Venezuela 



Minca and Boiida, Cdlnnibia 



Paramba and San Javier, Ecuador 



n 5 



22 

 21.1 



5 I 21 

 5 



23 



21.5 

 22 

 22 



17.3 



17.5 



16.7 



17.5 



17.7 



17 



17 



17.6 



9.5 



9.5 

 8.9 



10.2 



10 



9.7 

 9.8 

 10 



7.5 



7 



7 



8 



8.5 



7.5 



7.6 



10 

 9.7 

 9.5 



10 



10.7 

 9.8 



10 



10.5 



8.7 



7.7 



8.2 

 8.2 

 8 



"As defined by Thomas. 

 HEMIDERMA PERSPICILLATUM AZTECUM (Saussure). 



Carollia azteca S.viTssure, Rev. et Mag. Zool., 2me 8er., XII, 1860, p. 480, y'l. xx, 

 fig. 1. 



CaroUia brericaiida Peters, Monatsber. K. Preus Akad., Berlin, 1865, p. 520. — 

 DoBsoN, Cat., 1875, p. 492.— Trouessart, Cat., 1897, p. 156. 



Hemiderma brevicauda Miller and Rehn, Proc. Bost. Soc. Nat. Hist., XXX, 1901, 

 p. 283. 



Hemiderma j^erspiciUatnin Elliot, Pub. Field Col. Mus., Zool. 8er., IV, Pt. 2, p. 

 668, figs. 141, and cxv; Zool. Ser., VI, p. 515. 



Type-locaHtij. — Temperate and tropical Mexico. Not definitely 

 known. 



