No. 34-] HEMIPTERA OF CONNECTICUT: CICADELLIDAE. 



71 



Vertex and pronotum similar in form to variabilis, very coarsely 

 transversely striate, these striations are deeper and more pro- 

 nounced than in any allied form. Face very strongly convexly 

 inflated, appearing bulbous as seen from the side. 



Color : Vertex, pronotum, scutellum and elytra black shining, 

 unmarked, beneath rather bright pale yellow with ovipositor and 

 a few faint spots on legs fuscous. Front black above from which 



Bel. 



Fig. 6. Oncopsis tumidifrons DeLong. — (i) Lateral view. (2) Head, 

 dorsal view. (3) Face. (4) Female genitalia. All greatly enlarged. 

 Drawing by D. M. and F. M. DeLong. 



a very broad black stripe extends across face, terminating on base 

 of clypeus. Eyes margined with black and a narrow line extends 

 along outer margin of face to clypeus, so as to form a large oval 

 yellow area near either side. 



Genitalia: Female last ventral segment one-third longer than 

 preceding, roundingly produced from base with a U-shaped notch 

 extending one-third the way to base. 



Described from a single female from North Branford, Conn., 

 collected June 8, 1912, by B. H. Walden, and kindly sent to me 

 by Doctor Britton. As compared with allied forms it seems to 

 deserve specific treatment here in view of the differences cited 

 above. 

 O. sobrius (Walker). Bythoscopus sobrius Walker. 



List Homop., iii, 874, 1851. 



Vertex, pronotum and scutellum bright yellow, elytra darker, 

 tawny to brown. Commissural margin along clavus and nervures 

 pale. Length 5 mm. 



Both nymphs and adults have been taken on birch. 



Hamden, 14 June, 191 1 (W. E. B.) ; Branford, 13 June, 1918; Rainbow, 

 13 June, 1916 (B. H. W.) ; Cornwall, 5 June, 1921 (B. H. W.). 



