486 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Length 4-5 mm., width 2-2.5 mm. ; sHghtly larger than but 

 structurally very close to nebidosus; olivaceo-testaceous to brown- 

 ish and blackish, cuneus red, membrane clear, a rather distinct 

 somewhat oval-shaped fuscous spot on the apex. 



Predaceous ; occurs most frequently on Alnus rugosa. 



New Haven, 15 May (A. B. C.) ; Orange, 21 May (A. B. C.) ; Port- 

 land, 15 May (B. H. W.). 



D. (Camptobrochis) histrio Reuter. 



Callicapsiis histrio Reuter. Ofv. Kongl. Sv. Vet.-Akad. Forh., xxxii. No. 

 9, 75, 1876. 



i8th Rept. State Ent. Minn., 100, 1921. 



Length 4.5-5 mm., width 2-2.3 ^^- J dorsum bright red, clavus, 

 pair of large spots on corium and on pronotum black. 



Frequents borders of ponds ; probably predaceous. 



Long Island, N. Y. 

 *D. (Camptobrochis) nubilus Knight. 



i8th Rept. State Ent. Minn., 106, 1921. 



Length 4.2-4.8 mm., width 2-2.3 ^^- 5 "^ale more elongate than 

 female, apical half of membrane usually heavily infuscated; disk 

 of pronotum fuscous to blackish behind the calli, the median line 

 pale ; femora biannulate with pale on the apical half. 



Occurs on Pinns strobus; probably predaceous. 



Portland, May (B. H. W.) ; Rainbow, 13 June (B. H. W.). 



Key to Species of Group B. 



1. Tibiae banded with fuscous or pale 2 



Tibiae uniformly pale or yellowish 7 



2. Membrane with a distinctly rounded fuscous spot on the apical 



half, frequently connected at base by a fuscous streak extending 

 down from between the areoles, thus leaving a large pale spot 



each side of middle and bordering apex of cuneus 3 



Membrane usually somewhat infuscated but not as described above 4 



3. Calli solid black, a broad piceous ray behind each, in pale speci- 



mens the calli may be somewhat brownish but in such case the 

 median line and margins of the disk are distinctly pale, leaving 

 a dark brown ray behind each callus ; hemelytra with piceous on 



clavus and corium, embolium pale borealis 



Calli more or less invaded with brownish or pale, distinct rays not 

 apparent behind calli; hemelytra and pronotum more uniformly 

 colored, either fulvo-testaceous or dark brownish fasciolus 



4. Rostrum extending slightly beyond the posterior margins of the 



hind coxae ; membrane with the apical half scarcely infuscated, 

 femora pale but with two distinct blackish bands near the apex, 



hind tibiae biannulate with fuscous on the basal half grandis 



Rostrum scarcely attaining the posterior margins of the hind coxae ; 

 membrane, femora, and hind tibiae not having the above combi- 

 nation of characters 5 



5. Femora uniformly dark on the apical half, likewise the basal part 



in darkest specimens ; venter distinctly reddish, sometimes dark 



chestnut red, shining betulae 



Femora with the apical half distinctly banded or entirely pale 6 



6. Second antennal segment with prominent pale exserted hairs, in 



length equal to three times the thickness of the segment; prono- 



