Il8 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [BulL 



be characterized as regards many structural characters. If the 

 cross nervures between the sectors were of importance they would 

 be of service here as factors in classification, but their relative 

 significance is still an open question. 



In regard to feeding habits they closely resemble and are asso- 

 ciated with species of Deltocephalus, being found almost entirely 

 on grasses and low forms of vegetation. 



Key to Species. 



1. Anterior margin of vertex slightly produced before the eyes, wider 



than long 2 



Anterior margin of vertex usually well produced before the eyes, 

 angled with front or somewhat conical 5 



2. Vertex with heavy black band between the eyes, elytra greenish, 



nervures pale 3 



Margin of vertex with two large round black spots, elytra whitish 

 hyaline, nervures dark exitiosus 



3. Length 4.5 mm. or more, head very slightly produced 4 



Smaller, 3.5 mm., wedge-shaped, head more produced at middle . . 



cuneatus 



4. Vertex slightly produced at middle, band on vertex narrow, length 



less than 5 mm striolus 



Vertex parallel margined, band on vertex broad, length 6 mm. . . . 



parallelus 



5. Vertex wider than length at middle i 



Vertex as long as width at base, yellow with two large round spots 



above apex curtisii 



6. Species rather short and very broad, elytra short, scarcely exceed- 



ing abdomen, central anteapical cell not constricted 7 



Species smaller and more elongate, elytra usually longer than abdo- 

 men. Central anteapical cell constricted at middle : . 11 



7. Very broad, pale, or light brown with white spot on cross nervure 8 

 Narrower, usually black, or dark brown, without white spot on 



cross nervure 10 



8. Vertex rounded, less than twice as long at middle as next the eye 9 

 Vertex angled, twice as long on middle as next the eye, two spots 



close to apex, and an interrupted band between eyes extrusus 



9. Vertex unmarked or with two round spots relativus 



Vertex with transverse bands, a broad white spot on cross nervures 



varus 



10. Vertex angled, nearly twice as long on middle as next eyes, yellow 



at base uhleri 



Vertex rounding, little longer on middle than next eye. Shining 

 black anthracinus 



11. Elytra distinctly longer than body, more than 4 mm. in length .... 12 

 Elytra not exceeding abdomen in length, vertex with transverse 



band between anterior margins of eyes arctostaphyli 



12. Shorter and broader, vertex more obtusely angled, elytra broader 



at tip, color brownish, nervures pale, dark margined 13 



Long and very narrow, vertex sharply angled, elytra tapering, color 

 black, vertex with pale lines and markings, nervures pale . .elongatus 



13. Vertex brown with transverse fuscous markings, face dark 14 



Vertex fulvous without definite markings, face testaceous 



symphoricarpae 



14. Pale olive testaceous tinged with tawny, tibia orange vaccinii 



Dark brown without tawny color, legs dark striatulus 



