64 



MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 



The short maxilla' of .1. hiroIoi\ the only species whose pupa has been examined, show that 

 these appendages have been aborted in some ancestral form. 



Geographical dUtrihutlon. — A South and Central American genus; the more primitive gen- 

 eralized forms being neogreic — i. e., Brazilian, and extending into the Argentine Republic. The ' 

 North American species extend from ^Mexico into the Southwestern States and northward along 

 the Mississippi Valley and .Vtlantic coast — i. e.. inhabiting the Austro-riparian and southern and 

 middle portions of the Appalachian subprovinces. 



Synoiiyiiiical hidorij. — Although Herrich-SchaeHer's name Adelocephala has the priority, 

 Walsh's name Sphingicampa is much more descriptive and applicable. He not onh' described 

 the imao-o. ])ut gave a detailed description of the lai'va and pupsi. Adelocephala was apparently 



it:. 7. — Dl.^tribullLiu ijl Ihe gcuus Adciucepbala, 



first proposed in J/.S, by Hoistluval, but the first printed and published mention of it is to 

 be found in Herrich-Schaeti'er's Aussereuropiiischer Schmetterlinge, as mentioned above in 

 the synonomy. Boisduval's Othorene can not be separated from his Adelocephala, while, in the 

 future, when its transformations are known, A. (dhoHmuin may be foiuid sutticicntly distinct to 

 be assigned to a separate genus. 



Cntil we know th(> details of the life historv of each species of this genus it would not be 

 advisable to si)lit it up into distinct genera. After carefully working out, with what material I 

 luivi' had, the lai\al forms and histories, and the head and antennal characters, as well as the 



