DYNASTIISLE 231 



taken by Mr. G. W. Dunn, but the generic name was subsequently 

 changed to Aphonides, because of the previously published name 

 Anoplognathus; I hold this change of name to have been un- 

 necessary and, besides, Aphonides is much less suitable. In my 

 single pair the maxillary galea is not visible, but the author states 

 that it is broadened apically, rounded, unarmed and ciliate. The 

 last palpal joint in the El Paso specimens, as indicated by the 

 drawings, is very much stouter than in the Arizona examples 

 above described and the basal joint of the antennae very much 

 larger and longer, but I am unable to state whether or not this 

 may be due to inaccurate observation. The connection between 

 the pygidia is perfectly free throughout the width in this genus. 



Anastrategus n. gen. 



The large species constituting this genus have hitherto been con- 

 sidered as a section of Strategus, of the tribe Oryctini, but there are 

 so many affiliations with the Pentodontini, through Bothynus, in 

 general habitus and Anoplognatho, in the transversely and sub- 

 medially tumid pygidium of the female, that the necessity for 

 placing the group in the present tribe, under which circumstance 

 it must receive a special generic name, seems to be rather evident, 

 although it differs from Strategus only in a single important char- 

 acter, which is the absolute asexuality of the pronotal modifications. 

 In fact, the distinction between the Pentodontini and Oryctini, 

 as at present drawn, may be considered so essentially artificial, 

 that the assignment of purely subordinate value to the Pento- 

 dontini, as merely a group of the Oryctini, suggested by LeConte, 

 may be the proper solution of the question, or else the erection of 

 several tribal groups in addition to the Pentodontini and Oryctini. 



The body is oblong or subcylindric-oval, the head as in Strategus, 

 the pronotum with an oval anterior depression and apical tubercle, 

 exactly as in Orizabus, except that it is precisely similar in the 

 sexes and that the tubercle is wholly independent of the flat apical 

 beading, which in Orizabus extends upward and forms the anterior 

 face of the tubercle. The mentum is of the usual Pentotomid type, 

 the ligular part moderately constricted and rounded at tip, and the 

 entire surface is generally punctured and setose. The mandibles 

 are large and heavy, greatly exposed at the sides and almost as in 



