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



7. Ocellar furrow narrow, deep, and distinct; body black, with 



angles of pronotum, tegulae, and legs below knees, white; 

 pentagonal area flattened, walls flat and practically want- 

 ing; third segment of antennae not as long as fourth and 

 fifth together; saw-guides straight above, convex below, 

 broadly obliquely rounded to a blunt point above at apex. 



Length 6 mm consobrinus 



Ocellar furrow broad, shallow, and indistinct; body black, with 

 tegulae, and legs beyond knees, white, except that the tips of the 

 tibiae and the tarsi are more or less infuscated; pentagonal 

 area wholly wanting; third segment of antennae as long as 

 fourth and fifth together; saw-guides convex above and 

 below, obliquely truncated to a point above at apex. 

 Length 5 mm cordatus 



8. Scutellum punctate at apex; front without a V-shaped furrow 



behind median ocellus; body black, with collar narrowly, 

 tegulae, and legs below knees, white; third segment of 

 antennae subequal in length to fourth and fifth together; 

 pentagonal area wanting; saw-guides straight above and 

 below, obliquely rounded to a blunt point at apex above. 



Length 6 mm , crassus 



Scutellum striate at apex ...:.. 9 



9. Front with a V-shapcd furrow behind median ocellus; body 



black, with angles of pronotum, tegulae, trochanters, and 

 legs beyond knees, white; third segment of antennae sub- 

 equal in length to fourth and fifth together; pentagonal 

 area wanting; saw-guides broad, straight above, strongly 



convexly rounded below to apex above. Length 5 mm 



conspersus 



Front without a V-shaped furrow behind anterior ocellus; 

 body black, with angles of pronotum, tegulae, and legs 

 below knees, white; third segment of antennae shorter than 

 fourth and fifth together; pentagonal area wanting; saw- 

 guides straight above and below, oblique at apex, drawn 



out into a long point above. Length 6 mm costatus 



10. Scutellum smooth, or at most extremely finely rugose ; body 

 black, with angles of pronotum narrowly, tegulae, and legs 

 beyond knees, white ; antennae with third segment distinctly 

 shorter than fourth and fifth together; pentagonal area and 

 V-shaped furrow behind median ocellus wanting. Length 

 6 mm coracinus 



Scutellum distinctly punctate at sides; body black, with angles 

 of pronotum broadly, tegulae, apices of coxae and trochan- 

 ters more or less, and legs beyond knees, white; antennae 

 with third segment shorter than fourth and fifth together; 

 pentagonal area indistinctly impressed; V-shaped furrow 

 behind median ocellus distinct; saw-guides broad, convex 



