TRIBE XX. - CEUTOUIIVXCI1IX1. 41.51 



North American species occur with us. All have a conspicuous 

 lar spot of white or pale scales. 



KEY TO SPECIES OF RHINONCUS. 



a. Beak longer than head; thoracic tubercles obvious but small; form 



stout, broadly oval. 

 b. Larger, 3.5 4 mm.; elytra not mottled nor tuberculate. 



719. PERICARPIUS. 



bb. Smaller, less than 3 mm.; elytra mottled, the intervals finely tu- 



berculate. 720. PYRRHOPUS. 



oo. Beak not longer than head; thoracic tubercles wholly wanting; form 



more slender; length 2.1 2.8 mm. 721. LOXGUTAJS. 



719 (8863). RHIXOXCUS PERICARPIUS Fab., 1801, 451. 



Broadly oval, robust. Dark reddish-brown to blackish, antennae and 

 legs paler; above very thinly clothed with coarse grayish-yellow prostrate 

 hairs, beneath rather densely clothed with dirty gray scales; scutellar 

 spot elongate-triangular, very conspicuous. Beak slightly longer than head, 

 very finely carinate, closely and coarsely punctate. Thorax one-half wider 

 than long, feebly constricted near apex, disc coarsely and closely punctured, 

 feebly channeled, its lateral tubercles very small, obtuse. Elytra about 

 one-fourth wider at base than thorax, humeri rounded, sides broadly cur- 

 ved; striae wide, rather deep, closely and coarsely punctate; intervals feebly 

 convex, very rugose. Length 3.5 4 mm. 



Throughout Indiana but scarce; May 21 July 8. Taken 

 in numbers from the axils of the leaves of the soap wort or bounc- 

 ing-bet, Baponaria officinalis L., on May 29. Staten Island, N. 

 Y., and Jamesbnrg, N. J., July 11. Ranges from Canada, New 

 England and Lake Superior south and southwestward. Collect- 

 ed on Euphorbia marglnata Pursh. at Clarendon. Texas, Au- 

 gust 11; occurs also on Polygomiin. 



This is a common European species to which Dr. Dietz gave 

 the name occidental is because of minor differences in the carina 

 of beak, the curved impression at its base and in the longer fourth 

 tnrsal joint. The carina of beak is interrupted and almost obso- 

 lete in several specimens at hand and the basal impression is also 

 variable. As pointed out by LeConte, Say described the species 

 under the name Ceutorhynchus triangularis , and his name must 

 be restored if the insect proves to be different from the European 

 form. 



720 (8864). RHIXOXCUS PYRRHOPUS Boh., Schn., 1845, 172. 



Broadly ovate. Piceous-brown, thickly clothed above with coarse 

 brownish hairs and white scales; the latter forming a conspicuous scutellar 

 spot, behind which is a dark velvety line, and numerous mottlings on 

 elytra; under surface and flanks of thorax densely clothed with whitish 



