166 LE CONTE.— LONGICORN COLEOPTERA 



1. M. GuEXi, atra, dense breviter cinereo-pubessens, thorace parce punctato antice modice constrieto, lateribus 

 breviter tuberculato, elytris thorace plus sesqui latioribus, parce punctatis, versus basin scabris : maculis 

 utrinque duabus fasciiformibus undulatis nigris ornatis, antennis annulatis. Long. -8. 



One specimen, Benicia, California. I take great pleasure in dedicating this fine 

 species to my friend Mr. Guex, who by great zeal and industry has become possessed 

 of the only large entomological collection in America. 



Group 15. 

 Having now finished all the Lamiee with angulated anterior acetabnla, before 

 proceeding to the other great series, we must consider a recurrent group which 

 connects the series we have just finished with the Cerambyci. A curious assemblage 

 of characters is found here which exists in no other group, either of Lamise or 

 Cerambyci : tlie body is apterous, and convex, the elytra soldered together, with the 

 humeral angles obsolete. The antennae are widely separated, the front flat or convex, 

 not impressed between the antennse. The femora are sometimes strongly clavate. 

 The thorax is occasionally armed with lateral spines. The anterior acetabula are 

 entire, and either angulated (Ipochus) or round (Monilema). The mandibles are 

 sometimes emarginate at the apex, and the palpi show a Cerambycoid tendency, by 

 having in Monilema their last joint obconical. This genus dilEFers from all other 

 Lamiee that I have examined (except Adetus) by its corneous epistoma. 



CYRTINUS. 



Mandibulae acutas. 



Femora valde clavata. 



Tibise postiese extus leviter curvatje. 



Antennae articulis a 3'° subaequalibus, subtus parce piles ce. 



Palpi maxillares tenues. 



Acetabula antica extus angulata. 



The thorax is longer than wide, and a little narrowed towards the base. The 

 elytra are gibbous at base, and gradually widened posteriorly. 



1. C. PYGM^us, testaceus, pernitidus Isevis, elytris parce nigro-pilosis, ad basin grosse punctatis, et tuberculo 

 acuto utrinque armatis, fascia subbasali albo-pubescente, antennis fusco-annulatis. Long. -09. 

 Cli/ius pi/gmceusHaldi. 42. 



Alabama and Pennsylvania. Haldeman. 



IPOCHUS. 



Mandibulas acuta. 



Femora valde clavata. 



Tibise posticse rectse. 



Antennae articulis a 3'° gradatim brevioribus parce pilosae. 



Palpi maxillares articulo ultimo ovali. 



Acetabula antica extus angulata. 



