114 GEO. H. HORN, M.D. 



Occurs in Canada and the New England States as far south as 

 the hititude of Philadelpliia. 



C OC«i<leiit»Iis n. sp. — Oblong, sub(lei)resseil, fiuely pubescent. al)()ve in 

 great part yellowish red, except head and elytral markings piceous, beneath pi- 

 ceous, except the last three ventral segments and legs, which are yellow. Head 

 sparsely punctate. Thorax more closely punctate. Elytra much more coarsely 

 punctate, a few of the larger punctures with faint serial arrangement; color 

 yellow, sides and base piceous, a sutural stripe joining the base and ending in a 

 cordiform spot one-third from apex. Length .12 inch. ; 3 mm. PI II, fig. 11. 



In comparing tliis species with lepida the following differences will 

 be observed. In the markings of the elytra there is an absolute 

 constancy in the comjjaratively large series of both species scarcely 

 the slightest variation has been observed. In occidenfali/< there is a 

 sutural stripe ending in a cordiform spot ; in lepida there is no sutural 

 stripe and the spot is isolated and trausvei-sely oval. On the under- 

 side the first two segments are entirely jiiceous in occideiifu/is, but 

 yellowish at sides in lepida. 



On comparing the forms of the two lepida is narrowei- ; it has also 

 in many specimens a sliglit tendency to have the sides of the thorax 

 angulate. In lepida the elytral punctures are, on the whole, coarser, 

 and the serial arrangement of some coarser ones better marked. 



Hah. — Wvominy- to Vancouver. 



Fig. 1.— 



Fit 



