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



wings hyaline; scutellum punctate at sides; front with 

 lateral fovese connected with antennal foveae; 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 fovese not connected with antennal 

 foveae; saw-guides straight above and convexly rounded 

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



°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. 



spiraeas 



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 R1+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 



