514 



THE AMEBIC AN NATURALIST [Vol.XLVII 



a careful survey of the range of the species. There is 

 scarcely a doubt that the North American armadillos are 

 all derivatives of the Peba armadillo {Dasypus novem- 

 cinctus) of South America, a species of wide range, 

 occurring from Panama to Paraguay. The mulita of the 

 Argentine and Kappler's armadillo of Surinam were 

 formerly classified as species of Dasypus, but the former 

 is now Cryptophr actus hybridus and the latter Tatusia 

 kappleri. Nothing is known about the development of 

 the latter, but the preliminary paper of Fernandez shows 

 that the mulita is strikingly like our species in the details 

 of polyembryonic development. Such a fundamental re- 

 semblance would seem to indicate that the two species 

 are very closely related and should be classed in the same 

 genus. About a dozen other species of armadillo, 

 assigned to several other genera, are native to South 

 America. About their natural history little is known. 



Kange, Distkibution and Future of the 

 Armadillo in Texas 



In his "Biological Survey of 



Texas" Bailey (1905) 



states that 







ran, but in the rough country 



between Rock Springs and Kerrville thcA 



range fairly into the edge of 



the Upper Sonoran Zone. As a rule tl 



ey do not extend east of the 





extent into the extremely arid 



region west of the Pecos, but occupy app 



•oximately the semiarid Lower 



Sonoran region of Texas north to near 



atitude 33°. 



Bailey lists many localities from which armadillos 

 have been taken or authentically reported. To this list 

 I should like to add the following localities, which I have 

 visited and from which I have obtained considerable 

 numbers of specimens: Boerne (over 100), Comfort 

 (nearly 200), Fredericksberg (about 40), Kerrville 

 (about 25), Ingram (90), Helotes (3). Many of those 

 reported from Boerne, Comfort and Ingram were 

 brought from distances of twenty miles or more. At the 

 towns of Boerne and Comfort we find a flourishing 



