Dec, 1914] SCHAEFFER : NORTH AMERICAN OnTHOPHAGUS. 295 



The color is uniformly dull black or brownish black, the elytra in 

 some speciments from Kansas and Texas have a very few pale spots 

 at sides and apex; the prothorax is granulated and the intervals of 

 the elytra finely so. 



The apex of the clypeus is prolonged into a more or less prominent 

 subtriangular process ; the male has the upper carina very faint or 

 absent, the lower present ; prothorax produced at middle into a rather 

 broad, elongate process which is anteriorly emarginate with a small 

 bidentate process at middle of emargination. The prothorax of the 

 female is anteriorly less convex than in the male and has a short, 

 broad protuberance which is truncate in front. 



Onthophagus guatemalensis Bates. 



Biol. Cent. Am. Col., Vol. II, pi. 2, p. ■}■>,, tab. V, figs. 16 and i6a. 



Though described and known only from such remote localities as 

 British Honduras and Guatemala specimens in my collection from 

 New Braunfels, Texas agree so closely with the description that I am 

 compelled to refer these to 0. guatemalensis. This species is very 

 much like 0. hccatc in form and sculpture of prothorax and elytra, 

 but the color is always distinctly bluish green, and in the more de- 

 veloped males the upper cephalic carina is on each side acutely pro- 

 duced; the prothorax is not as closely granulate as in hecatc, the 

 median lobe, in fully developed males, is strongly produced and 

 furcate, nearly as in orphcns, in less developed males the prothoracic 

 and cephalic prominences are nearly as in hecate ; the intervals of the 

 elytra are biseriately punctate or rather granulate. In the female the 

 prothorax and head are as in hecate except that the upper cephalic 

 carina in guatcinalensis is sinuate, in hecate straight. 



Onthophagus orpheus Panz. 



Panz., Faun. Bor. Am. Prodr., p. 5, tab. i, fig. 2. 

 Horn, Trans. Am. Ent. Soc, Vol. V, p. 139. 

 Blatchley, Col. of Ind., p. 919. 



This is not a variety of janus but a distinct species as there is no 

 connecting link between the two, the cephalic and prothoracic 

 processes of the males are entirely different and never approach each 

 other, and the color is always metallic green or bronze, shining. 



The head of the male has the anterior carina feeble at middle, on 

 each side elevated into an acute tubercle; the prothoracic process is 



