16 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 82 



in middle of vertex; dark with pale lower front, the tubercles, carina, 

 and region about base of antennae paler. Antennae dark with paler 

 basal joints, third and fifth joints subequal and shorter than fourth. 

 Prothorax about twice as wide as long, almost rectangular, with sides 

 slightly arcuate, not very convex, a slight trace of lateral callosity 

 and median basal depression; surface finely alutaceous and finely 

 punctate ; often entirely pale, but in darker specimens with five spots, 

 these sometimes banded together. Scutellum usually dark. Elytra 

 Avitli sides parallel, humeri marked by short intrahumeral sulcus ; in 

 female 4 or 5 costae, usually not so long or prominent as in coti- 

 ju^ata; surface finely alutaceous and finely and rather sparsely punc- 

 tate; wide sutural, median, and submarginal vittae, not united at 

 apex. Body beneath finely pubescent, dark Avith margin of abdomen 

 pale; femora usually pale, but in some specimens from Louisiana, 

 Texas, Utah, Idaho, and Oregon the femora and abdomen dark or 

 partially darkened. Length, 5.6 to 6.8 mm; width, 2.6 to 3 mm. 



Type locality. — Milford, Del. 



Distribution. — Maine (Paris, Wales) ; New Hampshire (Mount 

 Washington) ; Massachusetts (Hatfield) ; New York (Long Island, 

 New York City, West Point, Whiteface) ; Pennsylvania (Frank- 

 ford, Hummelstown, North Mount) ; New Jersey (Clementon) ; 

 Marjdancl (Beltsville, Chesapeake Beach, Patuxent River) ; District 

 of Columbia; Virginia (Clarendon, Dyke, Mount Vernon) ; Georgia 

 (Augusta) ; Louisiana (Mandeville, Morgan City, New Orleans) ; 

 Texas (Beeville, Columbus, Victoria) ; Michigan (Detroit, Douglas 

 Lake) ; Indiana (Knox) ; Illinois (Algonquin, Dubois, East St. 

 Louis, Grass Lake) ; Minnesota (Fergus Falls, Mora) ; North Da- 

 kota (Bismarck) ; Kansas (Pawnee County, Reno County, Sylvia) ; 

 Texas (Houston); Utah; Nevada; Colorado (Littleton); Idaho; 

 Montana (Assiniboine, Gallatin Valley) ; Oregon (Blitzen River) ; 

 British Columbia (Vernon) ; Alberta (Medicine Hat, Cypress Hills, 

 Jenner) ; Saskatchewan (Oxbow) ; Manitoba (Aweme) ; Hudson 

 Bay. 



Food plant. — Polygonum sp. (D. H. Blake). 



Remarks. — D. procera, another member of the pensylvanica group, 

 is the species that in a previous paper '^'- I called paUipes Crotch. 

 At that time I discussed the insufficiency of Crotch's description of 

 pallipes^ and based my interpretation of the species chiefly on that 

 of Dr. E. A. Schwarz and Charles Schaeffer, as shown by labeled 

 specimens, as well as on the fact that the species invariably had red 

 legs in the east while vmguttata not infrequently had black legs. 

 Mr. Schaeffer has since written me that although he had labeled 

 specimens of the present species pallijyes, he has of late decided that 



"2 Blake, Bull. Brooklyn Ent. See, vol. 25, p. 212, 1930. 



