472 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 112 



tips of dorsal hairs shading terminally to blackish (dominantly blackish 

 in south, more reddish to north) ; buffy median band of dorsal hairs 

 the dominant band; ears and membranes with reddish markings; 

 females slightly larger and paler than males; lachrymal ridge devel- 

 oped, specimens examined: Argentina: Yuto, Jujuy, 2, AMNH. 

 Brazil: Maracaju, Mato Grosso, 1, AMNH; Sao Sebastiao, Sao Paulo, 

 1, USNM. Paraguay: Villa Rica, 3, USNM. Uruguay: Monte- 

 video, 1, AMNH. 



Lasiurus borealis borealis Miiller : Type locality, New York, diag- 

 nosis: larger than teliotis; dorsum reddish, washed with whitish; 

 buffy median band of dorsal hairs the dominant band; ears and mem- 

 branes with reddish markings ; females distinctly larger and paler than 

 males; lachrymal ridge developed, specimens examined: many 

 from southern Canada, eastern United States, and northeastern 

 Mexico. 



Lasiurus borealis frantzii Peters: Type locality, Costa Rica, diag- 

 nosis: smaller than contiguous races; dorsal color clear reddish with- 

 out white wash; buffy median band of dorsal hairs the dominant band; 

 ears and membranes with reddish markings; females scarcely dif- 

 ferentiated from males in size and coloration; juveniles similar to adult 

 blossevillii in coloration; lachrymal ridge developed, specimens 

 examined: Colombia: Pacho, near Bogota, 1, AMNH; Villavicencio, 

 Meta, 1, AMNH. Costa Rica: San Sebastian, San Jose, 1, AMNH. 

 Honduras: La Flor Archaga, 1, AMNH. Panama: Boquete, 3,500 

 ft., Chiriqui, 1, USNM; Tacarcuna Village, 3,200 ft., Darien, 2, 

 USNM; no exact locality, 1, USNM. Peru: Juliaca, 6,000 ft,, 1, 

 AMNH. Venezuela: Paya, 10 miles north of El Sombrero, Guarico, 



1, AMNH; Macuto, 1, USNM; Merida, 1, AMNH. 



Lasiurus borealis teliotis H. Allen; Type locality, unknown, probably 

 California (ornatus Hall, Penuela, near Cordoba, Veracruz, is a syno- 

 nym), diagnosis: larger than frantzii but similar to it in coloration 

 (slightly paler northward) and cranial characters, specimens exam- 

 ined: many from the western United States, Baja California, Jalisco, 

 Michoacan, Oaxaca, and Veracruz. 



Lasiurus borealis varius Poeppig: Type locality, Antuco, Bio-Bio, 

 Chile (poepingii Lesson is a synonym), diagnosis: much larger than 

 frantzii; similar to frantzii in color, except for darker face; ears and 

 membranes entirely black; lachrymal ridge developed, specimens 

 examined: Chile: Angol, 3 AMNH; Maquehue, Temuco, 1, AMNH, 



2, USNM; Rio Blanco, 4,900 ft., 4, USNM. 



Lasiurus castaneus Handley: Type locality, Tacarcuna Village, 3,200 

 ft., Darien, Panama (see description above). 



Lasiurus egregius Peters; type locality, Santa Catarina, Brazil. 

 diagnosis: Similar to castaneus but larger (forearm 48 mm. in male 



