396 PROCEEDINGS OF THE ACADEMY OF [May, 



9; second finger, 48; third finger, 100; fonrth finger, 80; fifth 

 finger, 51. 



Cranial measurements of type: Greatest length, 23.6 (23) ;' basal 

 length, 19.8 (20); basilar length, 17.4(17.4); median palatal 

 length, 7.2 (7.2); interorbital constriction, 4.8 (4.2); zygomatic 

 breadth, 15.2 (14); breadth of braincase above roots of zygo- 

 mata, 11.4 (11); greatest height of sagittal crest, 2.2 (3); man- 

 dible, 17 (16.6);- maxillary toothrow (exclusive of incisors), 8.8 

 (8) ; mandibular toothrow (exclusive of incisors), 10 (9). 



S])echnens Examined. — Forty-six, from the following localities in 

 ^Mexico: Chiapas — Huehuetan, 1, Touila, 1; Co lima — City of 

 Colima, 17; Jalisco — Teuchitlan, 1; Oaxaca — Llano Grande, 1, 

 Tehuantepec City, 2 (1 skin) ; Tamaulipas — Alta Mira, 1 ; Tepic 

 — Acaponeta, 8 (3 skins) ; Tuxtla — San Andres, 1 (skin) ; Vera 

 Cruz — Catemaco, 7 (3 skins) ; Yucatan — Chichen Itza, 7 (skins). 



Remarks. — That this bat is numerous in parts of Mexico is shown 

 by the following extract from the collectors' field notes : ' ' Common 

 about the houses in Acaponeta. During the day they conceal them- 

 selves under the tiles of roofs. One man told us that he had killed 

 over three hundi-ed of them shortly before our arrival while at 

 work on his roof. ' ' 

 Molossus pretiosus sp. nov. 



1901. Molossus rufus Robinson and Lyon, Proc. U. S. Nat. Mus., 

 XXIV, p. 156, October 3, 1901. 



Tyjie. — Adult male (skin and skull), Xo. 102,761, United 

 States National Museum. Collected at La Guaira, Venezuela, 

 July 13, 1900, by Wirt Robinson and M. W. Lyon, Jr. Original 

 number, 106. 



Characters. — Distinctly smaller than Molossus rufus from Para- 

 guay; color rich dark reddish-brown, the shoulders frequently 

 though not invariably chestnut. Red phase common, much 

 brighter than in Molossus rufus. 



Color. — Type: Upper parts seal-brown, somewhat more tinged 

 with red than that of Ridgway. Shoulders washed with rufous. 

 Under parts like back, but not as dark, and even more tinged with 

 red. Chest sprinkled with whitish hairs. Ears and membranes 

 blackish. 



^ Measurements iu parentheses are those of an adult male Molossus rufus 

 from Sapucay, Paraguay. 



