1900] Allen, Bats from Santa Marta, Colombia. 93 



Forearm, 57 ; thumb, n ; metacarpal II, 55 ; third finger metacarpal, 59, ist 

 phalanx, 25, 2d phalanx, 20; fourth finger metacarpal, 57, ist phalanx, 21, 

 2cl phalanx, 19 ; fifth finger metacarpal, 31, ist phalanx, 18, 2d phalanx, 5 ; 

 tibia, 1 8 ; foot, 13 ; breadth across ears, 27.5. 



Skull. The skull is massive, and the teeth are broad and heavy ; rostral por- 

 tion of the skull much broader than the interorbital. The upper canine is in 

 strong contact with pm. 1 so that the very small pm.i stands on the outer 

 edge of the toothrow. The upper incisors are strongly curved and arch forward, 

 projecting much beyond the canines. 



Total length, 23.5 ; basal length, 20 ; breadth of rostrum at base of canines, 

 6; greatest breadth of rostrum, 7.5 ; least interorbital breadth, 5 ; zygomatic 

 breadth, 14; mastoid breadth, 12.5; palatal length, ro ; distance between last 

 molars, 5 ; upper toothrow (exclusive of incisors), 9.5 ; mandible, 18 ; lower 

 toothrow (exclusive of incisors), 10. 



Promops milleri is based on four adult females, all remarkably 

 uniform in size and coloration, from Guayabamba, Peru, collected 

 September 24, 1894, by Mr. O. T. Baron. They were at first re- 

 ferred to Promops nasutus (Spix), and I am indebted to Mr. Gerrit 

 S. Miller, Jr., after whom the species is named, for calling my atten- 

 tion to its probable distinctness from this, apparently its nearest 

 ally. It differs from this species in its much larger size, in the 

 much lesser development of the furred areas on the forearm and 

 wing membranes, in the form of the tragus, in the greater length 

 of the exposed portion of the tail, and in the form of pm.'S', which 

 is not higher than pm. T. P. milleri is of about the size of 

 P. abrasus (auct.), but differs from it greatly through the less ex- 

 tension of the fur upon the proximal border of the wing mem- 

 brane, in coloration, character of the tail, etc. 



17. Peropteryx canina ( Wied\ Five skins and three speci- 

 mens in alcohol, Bonda, June and August. 



18. Saccopteryx bilineata ( Temm.). Thirty-six specimens, 

 28 skins with skulls and 8 in alcohol : Bonda, 33, February, 

 April, May, June, July, August, and September ; Minca, 3, July 

 and August. 



This series represents two well-marked color phases, a black 

 and a brown. In the black phase the color above is often black, 

 more commonly deep brown black ; below blackish brown, 

 washed with ash gray. In the brown phase the color above is 

 dark rusty brown ; below pale brown, the tips of the hairs lighter. 



