Deraeocoris (Heteroptera, Miridae) 123 



29, Delaware (C. J. Drake). WISCONSIN— 3$ Aug. 12, Salmo, 

 Eayfield County (W. L. McAtee). ONTARIO, CANADA,— 3 <? July 

 3, Lake of Bays (J. McDunnough). NOVA SCOTIA,— <?, Halifax 

 (E. P. Van Duzee). 



The writer has taken this species on alders, a few specimens being 

 collected on other plants but always in damp, cool, shaded situations. 

 At the McLean bogs specimens were swept from aphid-curled leaves 

 but the aphid was not identified. BorcaUs is doubtless predaceous to 

 a large extent as is true of alnicola, the latter species apparently being 

 confined to alders in its breeding habits. Both species are very similar 

 in general coloration but structurally are very distinct. 



Deraeocoris fasciolus new species 



Slightly smaller than boreaUs, disk of pronotum more uniformly colored, dis- 

 tinct rays not apparent behind the calli ; left genital clasper very similar to that 

 of borealis but the right clasper is distinctive. 



$. Length 6.4 mm. Head: width 1.06 mm., vertex .51 mm., length .63 

 mm., structurally not differing appreciably from borealis; yellowish brown, spot 

 each side of vertex, four or five transverse spots each side of median line of 

 front, above and below base of antenna, base and apex and two longitudinal 

 stripes on tylus, bucculae, tip of lorae and more or less on juga, blackish. Ros- 

 trum, 2.17 mm., reaching to near posterior margins of the middle coxae, yel- 

 lowish to brownish, piceous at apex, the basal segment somewhat infuscated. 



Antennae: segment I, length .54 mm., black; II, 1.57 mm., black, some- 

 what brownish at middle, pale pubescent, longest hairs scarcely equaling twice 

 the thickness of the segment; III, .7 mm., blackish, paler at base; IV, .48 mm., 

 blackish. 



Pronotum: length 1.4 mm., width at base 2.28 mm., anterior angles .94 

 mm., collar .74 mm. ; structurally very similar to borealis. disk more closely 

 but irregularly puntate ; calli dark brownish to black, invaded by pale or 

 brownish at the latero-anterior angles ; disk rather uniformly dark brownish, 

 sometimes slightly paler on the central area but never forming distinct rays 

 behind the calli, the lateral margins not at all paler than behind the calli. Scu- 

 tellum impunctate, convex and shining, brownish, the basal angles and apex 

 pale, median line brown, brownish black at each side but not attaining the base, 

 the blackish color never beginning at base as is the case in borealis. Sternum 

 brownish to black, always paler at the median line, basalar plate yellowish ; 

 ostiolar peritreme largely pale but becoming infuscated dorsally. 



Hemclytra: width 2.77 mm., structurally very similar to borealis; rather 

 uniformly dark brownish to piceous, paler on basal half of embolium and along 

 base of cubitus. Cuneus pale translucent, fine infuscated punctures evident, 

 apex more broadly infuscated than in borealis. Membrane nearly as in borealis. 

 the rounded spot on apical half joined at base by a ray-like infuscation pro- 

 duced from the apical angle of each large areole, or in paler specimens not 

 connected but the base of the apical spot not so clearly rounded as in borealis. 



Legs : structurally as in borealis; pale to yellowish, femora biannulate with 



