Deraeocoris (Heteroptera, Miridae) 129 



species were regularly determined as grandis by Uhler as witnessed by 

 the above list found in the collection of that author. The writer's de- 

 terminations for grandis until 1920, when the type was recofnized, 

 refer to two species, either borcaUs Van D. or fasciolus new species. 



Lectotype: $, "Grimsby" [Ontario, Canada (J. Petit)] ; Cat. No. 

 22684, U. S. N. M. 



The writer took all his specimens on hickory (Carya sp.), to which 

 plant the species appears to be confined in its breeding habits. At 

 Batavia, all the specimens were collected on young hickory trees, the 

 first adult being taken on July 7, at which time several nymphs were 

 found. The species is doubtless predaceous to a large extent as indi- 

 cated by the fact that no injury to foliage was noted and specimens 

 were not numerous on the most favorable growth of hickory. Speci- 

 mens were scarce on July 31 and the disappearance of the species 

 thereafter indicates that the winter season is passed only in the egg 

 stage. 



Deraeocoris betulae new species 



Brown to dark brown or blackish, venter dark reddisli brown to chestnut 

 red; femora uniformly blackish on the apical half, tibiae triannulate with 

 blackish. 



$. Length 6.7 mm Head: width 1.12 mm., vertex .54 mm., length .63 

 mm., tylus more prominent at base than in borcaUs: black, shining, in paler 

 specimens the base of vertex, each side of front, spot at base of juga, paler; 

 carina not evident, base of vertex delimited by a groove which separates it 

 from the broadly exposed', black and shining collum. Rostrum, length 2.25 mm., 

 reaching to near hind margins of the middle coxae, black, slightly paler at 

 the joints. 



Antctmac : segment I, length .55 mm., II, 1.77 mm., nearly cylindrical, about 

 equal to segment I in thickness, more slender on the basal one-fourth and 

 slightly so at apex, dusky pubescent, exserted hairs not equal to twice the thick- 

 ness of segment; III, .77 mm.; IV, .54 mm.; black, base of segment III nar- 

 rowly brownish, the last two segments slender, beset with fine pale hairs which 

 in length are equal to more than twice the thickness of segment. 



Proiiotum : length 1.48 mm., width at base 2.48 mm., anterior angles 1.03 

 mm. ; collar .8 mm., brownish black, opaque ; disk moderately convex, shining, 

 coarsely and somewhat longitudinally strigate-punctate, more finely punctate 

 near the basal margin, lateral margins distinct, straight, slightly rounded at 

 the anterior angles ; brownish black to black, calli smooth, confluent, extending 

 forward to the constriction ; propleura more finely punctate than the disk, 

 brownish black, paler at the lower margins ; xyphus conve.x in front, depressed 

 behind, margins carinate at the coxal margin, pale to brownish, or fuscous. 

 Scutelliim impunctate, convex and shining, dark brownish to black, basal angles 

 and apex paler. Stcnniiii brownish black, opaque; ostiolar peritreme pale to 

 brownish, becoming blackish at the dorsal margin. 



