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



wings hyaline; scutellum punctate at sides; front with 

 lateral foveas connected with antennal foveas; saw-guides 

 straight above, convex below, and obliquely rounded to a 



point above. Length 5 mm odoratus 



Front without a V-shaped furrow behind median ocellus; 

 body black, with collar, tegulae, and legs beyond middle 

 of femora, white; wings hyaline; scutellum roughened at 

 sides; front with lateral foveae not connected with antennal 

 foveae; saw-guides straight above and convexly rounded 

 from the base to a blunt point above. Length 6 mm nigritus 



o 



3 A. lobatus MacGillivray. 

 A. muricatus MacGillivray. 



A. odoratus MacGillivray. New Haven, 15 May, 1905 (B. 

 H. W.). 



A. nigritus MacGillivray. 



Blennocampa Hartig. 

 Key to Species. 



1. Antennae with third segment shorter than fourth and fifth 



together 2 



Antennae with third segment as long as or longer than fourth 

 and fifth together 3 



2. Antennae with third segment a little longer than fourth; 



wings fuliginous; body black, with trochanters, front legs . 

 in front, and knees and tarsi more or less, pale luteous; 



tegulae brown. Length 6 mm carbonaria 



Antennae with third segment one and one-half times as long 

 as fourth; wings hyaline; body black, with legs beyond 

 knees shading from piceous to luteous; tegulae in part, 

 white; head and thorax finely pubescent. Length 6.5 mm. 



spiraeae 



3. Front with a V-shaped furrow behind the median ocellus 4 



Front without a V-shaped furrow; pentagonal area entirely 



wanting; body black, with tegulae and legs below knees, 

 white; tibiae more or less infuscated; clypeus angularly 

 emarginate. Length 5.5 mm abnorma 



4. Scutellum punctate or striate, at least in part 6 



Scutellum smooth, not punctate or striate 5 



5. Median fovea with a rounded papilla at center; hind wings 



with the cell R J+2 rounded at apex, without a spur; body 

 black, with tegulae and legs below knees luteous; front tibiae 

 and tarsi more or less infuscated; saw-guides convex above 

 and below and convexly truncated at apex. Length 6 mm. 



antennata 



