1904.] Allen, Mammals from Tropical America. 53 



very small Nasua nelsoni from Cozumel Island, it is much 

 smaller than N. narica from eastern Mexico, and much paler, 

 more yellow even, than specimens from southern Chihuahua. 

 At first sight the type looks like a bleached specimen, but 

 proves on examination to be in excellent, unworn pelage. 

 The skull shows that the specimen was very old (the upper 

 teeth are more or less defective from caries, but are not 

 greatly worn). The general form of the skull is narrow, and 

 the teeth are very small even for the small size of the skull, 

 the three posterior upper molariform teeth having a length of 

 1 8 mm. against 21 mm. in N. narica from the State of Vera 

 Cruz, and they are even more reduced in general size, the 

 last upper molar having a transverse diameter of 6 mm. 

 against 7.6 mm. in narica. The palatal region is very nar- 

 row, especially the portion posterior to the molars, where the 

 least width is 15.5 mm. as compared with 19 mm. for the same 

 measurement in narica. 



Since writing the above I have received, through Mr. Gerrit 

 S. Miller, Jr., in charge of mammals at the U. S. National 

 Museum, a specimen of Coati from Brownsville, Texas, col- 

 lected by the late Dr. J. C. Merrill, that agrees strikingly in 

 coloration and small size with the specimen from Yucatan, it 

 having the same dull, yellowish underfur, rusty yellow head, 

 the long, yellowish gray tips to the hairs of the dorsal surface, 

 and the very light underparts. Without further material it 

 would be rash to attempt to separate subspecifically the Rio 

 Grande and Yucatan Coatis. 



In my paper on the genus Nasua, published in 1879 (/. c., p. 

 163), I referred at length to this Brownsville specimen, in 

 commenting on the wide range of geographical variation in the 

 Coatis of Mexico and Central America, " the Mexican speci- 

 mens being much lighter-colored than those from Guatemala 

 and Costa Rica," etc. 



Nasua narica pallida, subsp. nov. 



Type, No. 7125, adult, skin without skull, Sierra Nevada (vicinity of 

 Guadalupe y Calva), Chihuahua, Mexico; Dr. Carl Lumholtz. 



General color above pale brown, the hairs for their basal three- 



