162 Miller Second Collection of Bats from Curasao. 



Specimens examined. Two, both from the type locality. 

 Remarks. This species requires no special comparison with other 

 members of the genus, its tumid rostrum at once distinguishing it. 



Molossus pygmaeus sp. nov. 



Type adult female (in alcohol) No. 102,104 United States National Mu 

 seum, collected in an attic near Willemstad, Curacao, West Indies, 

 January 16, 1900. 



Characters. Considerably smaller than Molossus obscurus; color paler 

 and molar teeth narrower than in the mainland animal. 



Color. Back broccoli-brown faintly washed with drab, the hairs 

 whitish gray through basal half, this color appearing irregularly at sur 

 face. Belly drab-gray the hairs faintly whitish through basal half. 



Skull and teeth. Except for its smaller size the skull does not differ 

 noticeably from that of mainland specimens. The crowns of the molar 

 teeth are, however, relatively narrow. Rudimentary hypocone of first 

 upper molar nearly obsolete. 



Measurements. External measurements of type: total length, 86 (98)*; 

 tail vertebra, 34 (38); tibia, 11.8 (14); foot, 6.8 (7.8); forearm, 35 (39); 

 thumb, 6 (6.4); second digit, 35 (40); third digit, 70 (78); fourth digit, 

 52 (60); fifth digit, 37 (42); ear from meatus, 10 (12); ear from crown, 

 8 (10); width from ear, 10 (14). 



Cranial measurements of type: greatest length, 14.8 (16.4)*; basal 

 length, 13(14.8); basilar length, 11 (13.6); lachrymal breadth, 4.8(5.4); 

 least interorbital breadth, 3 (4); zygomatic breadth, 9.6 (.10-6); mastoid 

 breadth, 9 (10); greatest beadth of braincase, 8 (9); depth of braincase, 5 

 (6); mandible, 10.4 (11.8); maxillary toothrow (exclusive of incisors), 5.0 

 (6); mandibular toothrow (exclusive of incisors), 6 (7). 



Specimens examined. One, the type. 



Remarks. Molossus pygmceus belongs to a group of species the numbers 

 of which are even smaller than M. obscurus and its allies. The animal 

 is probably confined to the island of Curacao. 



*Measurements in parenthesis are those of an adult female Molossus 

 obscurus from La Guaira Venezuela. 



