310 



Rhopalotomus, Fieb. 



1. B. iKicificxis. 



Rhopalotomus pacijicm, Uliler, in Haydea's Survey of Moutaua, 415. 

 Inhabits Montana, Idaho, and California. 



2. R. hracliycerus. 



lihopalotomus hracliycerus, Ubler, iu Haydeu's Survej' of Moufcaua, 416. 



Inhabits California and Colorado. 



Labops, Burra. 

 L. hesperius. 



Labops hesperius, Ubler, ia Hayden's Survey of Moutaua, 416. 



Inhabits Colorado, Montana, and British America. 



It varies somewhat in the breadth of the head and iu the amount of 

 yellow marking of the head, &c. Collected by Lieutenant Carpenter, 

 in July and September, on the mountains and foot-hills. 



Camptobrochis, Fieb. 

 C. nebulosus. 



Camjjtoirochis nebulosus, Uhler, in Hayden's Snrvej' of Montana, 417. 



Inhabits Dakota, Colorado, Kansas, Missouri, Illinois, New England, 

 and Maryland. 



In the city of Baltimore, it is sometimes common in tbe crevices of 

 the bark of linden trees ; and in Massachusetts, it preys upon the females, 

 and perhaps also upon the eggs, of the canker-moth. 



TiNiCEPHALUS, Fieb. 

 T. simplex. 



Tinicephalus simplex, Ubler, in Hayden's Survey of Montana, 417. 



Inhabits Colorado, in July, on the foot-hills. Collected by Lieutenant 

 Carpenter. 



Plagiognathus, Fieb. 

 P. ohscurus. 



Plagiognathus obscurus, Ubler, in Hayden's Survey of Montana, 418. 



Inhabits Texas, Colorado, and the Atlantic States. 



Agalliastes, Fieb. 

 A. assoeiatus. 



Agalliastes assoeiatus, Uhler, in Hayden's Survey of Montana, 419. 

 Inhabits Colorado and Utah. 



Orectoderus. New gen. 



Elongate, narrow ; hemelytra contracted before the middle. Head 

 long, obliquely declining and curving anteriorly, S ; shorter and with 

 the front almost vertical, 9 ; behind the eyes narrowed into a neck, S ; 

 protracted, but scarcely narrowed, 9 ; face from the eyes to tip forming 

 a long, acute triangle, $ , but shorter in the 9 ; the surface between the 

 eyes very broad and somewhat flattened, S . Eyes prominent, long, oval, 

 placed obliquely; inferior cheek lobes ridged and tapering to a slender 

 point, bounded above by a long deep groove, which carries the linear, 

 carinate, superior cheek-lobe ; jugum forming a slender, tapering, promi- 

 nent ridge, separated from the tylus by a long groove ; the tylus long 



