1904.] Allen, New Bats from Tropical America. 233 



as noted above. Probably a large amount of material, from 

 widely separated localities, would disclose a greater or less 

 number of additional fairly recognizable forms. 



In this connection it may be worth noting that in many 

 skulls of A. plauirostris examined, from various localities, m 3 

 is found to be present on both sides in hardly more than fifty 

 per cent, of the specimens; it is sometimes present on one side 

 only, as has been noted by previous authors, being repre- 

 sented on the other side by the alveolus of the fallen tooth, 

 while in fully one third of the skulls examined only the alve- 

 olus remains on either side. It may here be added that the 

 specimen recorded above (antea, p. 79) from Boqueron, 

 Chiriqui, as A. intermedius proves, on reexamination, to be 

 an example of A. planirostris with the third molar on each 

 side absent. 



Phyllostomus hastatus panamensis, subsp. nov. 



Type, No. 18705, 9 ad., Boqueron, Chiriqui, Oct. 6, 1901; J. H. Batty. 



Much larger than true P. hastatus hastatus from eastern South 

 America. 



Above dark seal brown, lighter and slightly varied with gray on 



shoulders, sides of neck, and front of head; below lighter brown, the 



extreme tips of the hairs grayish, giving a slight grayish wash; ears, 



nose-leaf, and membranes blackish brown. Five other specimens 



(topotypes) are similar, none showing any tendency to a reddish phase. 



Measurements (type, from dry skin). Forearm, 90 mm. ; third 

 finger: metacarpal, 83, first phal. 21, second phal. 42.5, third phal. 26; 

 tibia, 34; foot, 24; calcaneum, 24. Skull, total length, 39; basal 

 length, 30; zygomatic breadth, 21.2; mastoid breadth, 19; postorbital 

 constriction, 7.5; width of rostrum at base of canines, 9.5; upper 

 toothrow (c-m 3 ), 14.3. 



In six specimens (2 males and 4 females), the forearm ranges from 

 86 to 90, averaging 88; third metacarpal, 80-83.5, averaging 82.5. 

 Four skulls (2 males and 2 females, 2 others being too imperfect for 

 measurement), total length, 37-39 (38.2); zygomatic breadth, 21-22.2 

 (21.5); mastoid breadth, 18.6-20 (19.3); width of rostrum (6 speci- 

 mens), 9.2-10 (9.5). 



Pallas's Vespertilio hastatus was based on Button's ' La 

 Chouve-souris Fer-de-lance,' said to be "fort commune en 

 Amerique," which may be construed as the eastern coast 



