158 The Ohio Journal of Science [Vol. XX, No. 5, 



Parabolocratus Uhler. 



This genus is very closely related to the preceding but aside 

 from having two claval veins and the absence of oblique stripes, 

 the most evident characters, the head is shorter, more paraboloid 

 and elytra usually shorter. The species flavidus, viridis and 

 major present many gradations and it is possible that with 

 sufficient material may be connected but flavidus is essentially 

 southern major northeastern and viridis, while widely dis- 

 tributed, seems best represented in the Mississippi Valley and 

 the plains region. 



Cochlorhinus, Uhleriella and Huleria are all Pacific coast 

 forms and I have attempted to show their affinities in the key 

 while the excellent descriptions of Uhler, Ball and VanDuzee 

 will enable the student to readily identify the different species 

 listed in Van Duzee's Catalogue. 



Acurhinus nov. gen. 



Head strongly produced, the vertex with sides nearly straight sub- 

 acute, apex acute, slightly concave above, frons reaching close to eyes, 

 antennal pits touching eyes and ocelli very close to eye border. A 

 decided furrow beneath the margin between vertex and front and the 

 front strongly convex. Costa with strongly reflexed veinlets next the 

 outer anteapical which is much reduced. 



The species grouped here have some striking resemblances 

 to Dicyphonia on one hand and to Platymetopius and Delto- 

 cephalus on the other but they seem to me to belong rather 

 between Dicyphonia and Cochlorhimis than in the group Delto- 

 cephalaria. In fact maculatus was placed doubtfully in the genus 

 Dorydium at the time of its description. 



Type of the genus Acurhinus maculatus (Osborn). 



Acurhinus maculatus (Osborn). 

 Dorydium (?) macidatum Osborn, Ohio Naturalist, Vol. IX, p. 464. 



This species, described from Guatemala, differs from pyrops 

 quite distinctly in that the dark markings of the front are 

 oblique or nearly longitudinal instead of forming transverse 

 teeth projecting from the blackish area below the head margin 

 and the elytral nervures are not so strongly margined with 

 fuscous. The female segment is broadly concave, not excavate 

 at middle. 



