NO. 1514. JiUVIJ^W OF THE BAT GENUS JIEMIDERMA IIAIIN. 



113 



to the drying of the skins in an abnormal position, as he himself sug- 

 gests, for I have not seen any such character in the specimens exam- 

 ined. His figures of the tragus and of the legs and membranes are 

 characterless. But, fortunately, his measurements serve to show that 

 the species he had was neither suhriifwnh nor castaneum, and the name 

 is therefore adopted for the only other known form from that region. 

 No definite type locality is assigned in the original description, Avhich 

 implies that specimens were examined from more than one localit}'. 

 Among the specimens examined by the present author those from the 

 lowlands of the eastern coastal region of southern Mexico show the 

 greatest amount of differentiation from the typical perspiGillatum, 

 and, as it seems quite probable that some of Saussure's specimens may 

 have come from that region, specimens from Rio Tesechoacan, near 

 the town of Perez, in Vera Cruz, are assumed, for the purposes of this 

 paper, to be t^^pical. 



Central American specimens are intermediate between those from 

 Vera Cruz and Oaxaca and those from South America. Should the 

 accumulation of more material from that region show that these dif- 

 ferences are marked and constant it may become necessarj^ to separate 

 them as another subspecies, but such a course does not seem advisable 

 at the present time in view of the great variations which are found 

 among specimens from the same locality. 



Average skin, vieasurejnents, In mUlimeiers, of Ilemiderma persplcUlatain aztecwm. 



a Measurements taken from dry skins. 

 Proc. N. M. vol. xxxii— 07 8 



