108 FAMILY V. — PENTATOMID^E. 



sides of front portion obliquely deelivent, shallowly impressed. Other 

 structural characters as above g - iven. Length, 6 — 8 mm.; width, 4.5 — 

 5 mm. 



Found throughout Indiana, but more common in the south- 

 ern portion, May 21 — Sept. 29. Feeds on plants of the Umbel- 

 liferse family, mainly the wild carrot, Daucus carota L., and the 

 button snake-root, Eryngium aquaticum L. The latter plant 

 occurs on wet prairies, and near Heckland, Vigo Co., in Septem- 

 ber, I once found this bug by hundreds in all stages on its heads 

 and in the angles of its leaves.-'" The known range of semi- 

 vittata extends from Montreal, Canada, and New England west 

 to Colorado and south and southwest to northern Florida, Texas 

 and Mexico. I have not taken it in Florida, and the only 

 definite locality records from that State are Crescent City, 

 April, by Van Duzee (1909, 154), and St. John's Bluff, the type 

 locality of Pentatoma pilipcs Dallas (1851, 247), a synonym of 

 semivittata. Van Duzee (1904, 34) states that he "once found 

 this insect in large numbers on carrot blossoms in a waste 

 field near Buffalo, N. Y., as late as Nov. 3. They were in all 

 stages of development and the imagoes were blackish at first 

 with the connexivum margined with pale. After they attained 

 full maturity they assumed their ordinary pale color with the 

 connexivum maculated." 



66 (99). Trichopepla atricornis Stal, 1872, 34. 



4 



Broadly oval, subdepressed. Dull grayish-yellow marked with fus- 

 cous punctures, these fewer and smaller than in semivittata, forming 

 dark stripes only on head, and blotches in anterior depressions of prono- 

 tum and on base of scutellum; yellow stripes of cheeks less elevated and 

 not quite as distinct as there; smooth raised yellowish areas much fewer, 

 evident only on disk of basal portions of pronotum and scutellum; tip of 

 scutellum narrowly pale, but punctured with fuscous; under surface yel- 

 low, the abdomen often darker on sides; legs reddish-yellow obscurely 

 dotted with brownish; tarsi and tip of beak fuscous. Head broader in 

 front of eyes and less tapering than in semivittata; pronotum wider with 

 sides of disk less deelivent and lateral margins less oblique; scutellum 

 with apical half wider and tip more broadly rounded; elytra alutaceous, 

 more finely and sparsely punctate. Length, 7 — 8 mm.; width, 4.5 — 5 mm. 



Argo, 111., July 24 {Gerhard). Mariposa Grove, Cal., May 14 

 (III. Nat. Hist. Surv. Coll.) . Described from Wisconsin and 

 Illinois. Ranges from there west to British Columbia, Alaska 

 and California. Uhler (1877, 403) says of it : "Broader and 



-'>»<• Canadian Entomologist. XXVIII, L896. 266. 



