THE THIN-WINGED BUGS 



(Family Henicocephalidce.) 



This is a remarkable family of which only twelve species are 

 known, of which two inhabit the United States. It is allied to 

 the Reduviidse, but the front wings are wholly membranous, with 

 a distinct venation resembling those of certain saw-flies. The 



Fig. 1790. — Henicocephalus culicis. 

 Enlarged. (Original.) 



front legs are greatly swollen. The American species are Heni- 

 cocephalus culicis Uhl. and H. formicinis Uhl. The former was 

 found by Mr. E. A. Schwarz under stones on the shores of the 

 Great Salt Lake, Utah, and later on the shores of the Potomac 

 River near Washington. 



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