200 PROCEEDINGS OF THE ACADEMY OF * [Feb.. 



Remarks. — This race needs special comparison with only one form, 

 C. pamellii boothi. From it portoriccnsis can be distinguished by the 

 rather smaller size and the form of the skull. Tlie ears do not seem to 

 be as good a diagnostic character as those given here, but still there is 

 a slight difference in the shape of the same. From C. jxtrncllii the 

 same characters that distinguish C. p. boothi can be applied to this 

 subspecies. 



Specimens Examined. — Five, one skin, four alcoholic specimens: 

 Cueva di Fari, near Pueblo A'lejo, Porto Rico. (U. S. N. M.) 



Chilonycteris rubiginosa Wagner. 



1843. Chilonycteris rubiginosa Wagner, Archiv fiir Naturgescliichte, IX, bd. 

 I, p. 367. [Caigara, Brazil.] 



1850. Chilonycteris rubiginosa Wagner, Abhandlungen IMathem.-Physik. CI. 

 Akad. Wissenschaften Munchen, V, p. 181, taf. Ill figs. 2-6. [Caicara, 

 Brazil.] 



1854. Chilonycteris rubiginosa Burmeister, Thiere Brasiliens, I, p. 75. [Cai- 

 cara. Brazil.] 



1S55. Ch[ilonycteris] rubiginosa Wagner, Suppl. Schreber's Saugthiere, V, 

 p. 679. [Matto Grosso.] 



1872. Chilonycteris rubiginosa Peters, Monatsbericlite K. Preuss. Akad. Wis- 

 senscli., Berlin, 1872, p. 360. [Brazil; Guatemala; Costa Paca.] 



1878. Chilonycteris rubiginosa Dobson, Catal. Chiropt. Brit. Mus., p. 452, 

 PI. XXIII, fig. 3. 



1879. Chilonycteris rubiginosa Alston, Biol. Cent.-Amer., Mamm., p. 35. 

 (Part.) [Mirador, Mexico; Duenas, Ciudad Vieja, Guatemala; Costa 

 Rica; Colombia; Brazil.] 



1892. Chilonycteris rubiginosa Thomas, Journal Trinidad Field Naturalists' 



Club. J, p. 162. [Port of Spain, Trinidad.] 

 1902. Chilonycteris rubiginosa Miller Proc. Acad. Nat. Sci. Pbila., 1902, 



p. 402. [Chontales, Nicaragua; Trinidad.] 



Type Locality. — Caigara, ujDper Amazon, Brazil. 



Distribution. — Upper Amazon region of Brazil, north to Guatemala, 

 east at least to Trinidad. The specimens from the latter island may, 

 when further material has been examined, i^rove to be a distinct race. 

 This form no doubt intergrades with C. r. mexicana, as specimens of 

 the latter race from southern Mexico approach true rubiginosa in pro- 

 portions. The specimen from Guatemala measured by Dobson (L c.) 

 was without doubt true rubiginosa. 



General Characters. — Size large (largest in the genus) ; ears with the 

 internal margin entire; tragus apically produced and with a slight 

 accessory lobe; nose with a low rounded tubercle. 



Head. — Moderately long, depressed; crown moderately elevated 

 above rostrum. Ears erect, apically acute; internal margin evenly 

 arcuate, the inferior lobe rectangulate; external margin slightly con- 

 cave in its upper half, median notch rectangulate, rather small, the 

 angle of the inferior shoulder rounded, lower portion of the external 

 margin evenly rounded and carried forward to near the angle of the 



