1902.] NATURAL SCIENCES OF PHILADELPHIA. 171 



between the canine and second premolar, completely filling the 

 space. 



Color. — In describing the color one cannot do better than quote 

 the original description — " Brown phase: entire dorsal surfac© 

 sepia, the fur paler beneath the surface and each hair tipped with 

 light drab. The drab tips produce a distinct bloom in certain 

 lights. Under parts very pale yellowish broccoli-brown, lightest on 

 belly, flanks and pubic region, faintly darker across chest. Red 

 phase : like brown phase but entire pelage suffitsed with cinnamon. 

 Pale phase : light salmon-buff above and below, becoming more 

 red about shoulders and head. Ears and membranes dark brown 

 in all three color phases." The brown phase appears to be simply 

 an intermediate between the two extremes. 



Measurements. — Average of seven alcoholic specimens: Length of 

 head and body, 55.5 mm.; head, 16.7; ear, 14.5; tragus, 5.4; 

 forearm, 50.8; thumb, 6.3; third finger, 86.9; tibia, 20.9; cal- 

 caneum, 21.7; foot, 9.7; tail, 23.7. 



Remarks. — In view of the slight differentiation of this form I 

 prefer to consider it a subspecies and not a full species. Future 

 study may show that it is strictly insular and that no intergrada- 

 tion occurs, but I prefer to treat it on the same basis as the other 

 newly recognized form of this group, the dental characters of which 

 are even more striking, though the difference in size is not so 

 apparent. 



Specimens Examined. — Fourteen — six skins, seven alcoholics, one 

 skull — all from the U. S. National Museum: 



Cura9ao, West Indies (14). 



