STATE AGRICULTURAL SOCIETY. 389 



GRAPE. STALKS. 



and the angular notch in the base of their heads, and the pale stripe, slightly 

 elevated, along the middle of the head and thorax, further separates them 

 from the genera to which they have been referred, and approximates them to 

 j^phrophora. The foreign species belonging to these genera, with which I have 

 been most liberally supplied by Dr. Signoret, of Paris, enable me to trace the 

 affinities of these rather anomalous insects much more accurately than it would 

 be possible to do without such aid. 



The Cercopis quadrangularis Say so closely resembles the European Lepyro- 

 nia coleoptrata, that I am surprised to see it placed in any other genus. 



The Cercopis obtusa^ Say, also placed under Ptyelus by Mr. Walker, belongs 

 to the genus Clastoptera. 



The Cercopis ignipecta of Harris's catalogue, also supposed to be a Ptyclns 

 by Mr. Walker, pertains to the genus Monecphora. As this name, ignipccta, 

 was published more than twenty years ago and no description of this 

 species has ever been given, I may here supply this deficiency. In size and 

 form this insect has a marked resemblance to the Monecphora bicincta, Say, 

 but is destitute of bands or spots on its upper surface. It is black, old speci- 

 mens fading to brown, and on the under side the breast, the edges of the 

 abdominal segments, the anterior knees and the hind legs are bright blood red 

 with the tips of the feet black. Length 0.35. 



AFFECTING THE LEAVES. 



1. Puncturing them and sucking their juices. 



99. Large green tree bug, Rhaphigaster Pennsylvanicus, Degeer. (He 

 miptera. Pentatomidas.) 



A large flattened grass green bug edged all round with a lighf 

 yellow line, interrupted at each joint of the abdomen by a small 

 black spot, its antennae black beyond the middle of their third 

 joint, with a pale yellow band on the first half of the two last 

 joints. Length 0.60 to 0.70. This occurs, chiefly in September, 

 throughout the Northern States, upon hickory, willow and other 

 trees, as well as on gra])e vines. Mr. Dallas has recently des- 

 cribed it as a new species, naming it R. Sarpinus, List of British 

 Museum, p. 276, and Mr. Say has also named it hilaris. 



100. Bound trkk dug, Pentatoma ligata, Say. (Ilemiptera. Pcntato- 

 midse). 



A large grass green bug closely resembling the foregoing, but 

 more widely edged all round, except upon its head, with pale red, 



