160 Miller Second Collection of Bats from Curacao. 



rostris of Colombia. Here the incisors were absent in about one-third of 

 the individuals, and the full set was present in less than one-half.* 



Mormoops intermedia sp. nov. 



Type adult female (in alcohol) No. 102,174 United States National 

 Museum, collected in cave at Hatto, on north coast of Curacao, West 

 Indies, April 29, 1900. 



Characters. Similar to the Mexican Mormoops megalophylla Peters, 

 but smaller, the size intermediate between that of the two previously 

 known species; colol- (at least in brown phase) slightly darker than in 

 M. megalophylla. 



Color. Brown phase: entire dorsal surface sepia, the fur paler beneath 

 the surface, and each hair tipped with light drab. The drab tips pro 

 duce a distinct 'bloom' in certain lights. Underparts very pale yellow 

 ish broccoli-brown, lightest on belly, flanks and pubic region, faintly 

 darker across chest. Red phase: like brown phase but entire pelage 

 suffused with cinnamon. Pale phase: light salmon-buff above and be 

 low, becoming more red about shoulders and head. Ears and membranes 

 dark brown in all three color phases. Individuals in the brown phase 

 are the most frequent; those in the red phase are less often met with; 

 while the pale phase is comparatively rare. 



Membranes, ears, and other external characters as in Mormoops mega 

 lophylla. 



Skull and teeth. While the skull exactly resembles that of Mormoops 

 megalophylla the teeth are distinguishable by the greater size and conse 

 quent crowding of the upper premolars. The anterior premolar is dis 

 tinctly broader than in M. megalophylla and it usually fills the entire 

 space between canine and posterior premolar. The lower premolars are 

 slightly larger than in the Mexican animal. 



Measurements. External measurements of type specimen: total length, 

 80; tail, 20; tibia, 20; foot, 9; calcar, 20; forearm, 48; thumb, 6.4; 

 second digit, 45; third digit, 90; fourth digit, 6.6; fifth digit, 57; ear 

 from meatus, 14; ear from crown, 9. Average of twenty topotypes: 

 tail, 20.9 (18-22); forearm, 49.6 (48-51). f 



Specimens examined. One hundred and sixty-four from caves and rock 

 crevices in all parts of the island. 



Remarks. Mormoops intermedia is readily distinguishable from M. 

 megalophylla by its size and more crowded upper premolars. With the 

 Jamaican M. blainmllii it needs no comparison. The color phases in this 

 bat are very striking. 



Natalus tumidirostris sp. nov. 



Type adult male (in alcohol) No. 102,106 United States National Mu 

 seum, collected in cave at Hatto, on north side of island of Curacao, 

 West Indies, May 1, 1900. 



*Bull. Am. Mus. Nat. Hist., N, Y., xiii, p. 89, May 12, 1900. 

 f Average of twenty specimens of M. megalophylla from Mirador, Vera 

 Cruz, Mexico; tail, 27.8 (26-32); forearm, 54 (53-57). 



