34 EDWARD P. VAN DUZEE. 



This species may he distinguished l>y tlie broad, almost concolor- 

 ous apex of the scutellum and tlie depressed pronotuni, with the 

 sides strongly arcuated, together with tiie maculated connexivum 

 and blackish submetallic venter. It is doubtless suly'ect to variation 

 in the extent of obscuration by black punctures. 



Peribalus piceiis Dallas. 



Like the preceding, this insect has a northern habitat. My only 

 specimen was taken at Bozeman, Mont, in July, and kindly pre- 

 sented to me by Prof. R. A. Cooley. Mr. W. H. Harrington has 

 taken it near Ottawa, Ont. ; Prof. Osl)orn records the capture of a 

 pair in Iowa, and the type was from Hudson's Bay. Perihahcs 

 piceus differs from our other species in being broadest behind the 

 middle of the abdomen and more convex both above and below. It 

 is a dark-colored form, with the pale margins of the abdomen and 

 the apex of the scutellum strongly contrasted. There is a pair of 

 round white dots on the disk of the pronotum anteriorly, and the 

 pale margin of the connexivum is undulated within ; the legs are 

 piceous, becoming pale brown on the outer surface of the tibiae and 

 base of the tarsi ; antennae brown, shading to piceous on the apical 

 joints and with the incisures pale; rostrum brown, reaching the 

 posterior coxse. 



Dr. W. L. Distant writes me that Pentatcma duhia of Dallas 

 (List, p. 237) is a Perlbalus. It was descril)ed from North Ameri- 

 can material, but I cannot make the short diagnosis agree with any 

 of the species enumerated above. It might well be a form of limbo- 

 larius were it not for the use the author makes of the word " pilosis." 

 The only other North American species to which this would apply is 

 Trichopepla semivittata Say. 



Genus TRICHOPEPI.A Stal. 



AiilenniB rufous with the apical two joints black ; head narrow at apex ; side.s of 

 the pronotuni more ol)lique seniivittata.. 



Autenusfi black, basal joint only rufous; head broader at apex ; si<h"sof the pro- 

 notum less oblique atrieornis. 



Trichopepla seiiiivJitata Say. 



Widely distributed and locally abundant. My collection contains 

 material from New York, New Jersey, Delaware, Washington, D. C, 

 Indiana and Colorado, and Mr. Chagnon has taken it at Montreal. 

 I once found this insect in large numbers on carrot blossoms in a 



