236 



Say^s Descriptions of 



Linnasan BombyXj with transparent wings, which were 



I 



extremely abundant a few years since in Maryland, cans- 

 ing much apprehension for the safety of the trees of their 

 choice. Some of them were obtained for me, by my 

 friend Mr. Gilliams, for examination, when I described 

 them under the name of Tiyalhia^ but did not publish the 

 account- 



10. C. graUator. Ferruginous, with black sutures 

 and wings. 



Inhabits Indiana. 



Body ferruginous : head slightly yellowish on the 

 orbits : mandibles black at tip : antenn<e dusky, before 

 the tip yellowish : thorax with two obsolete, parallel, 

 yellowish lines ; sutures before the wings and scutel 

 black : xvings violaceo-fuliginous ; nervures blackish ; 

 stigma ferruginous ; second cubital cellule rather large, 

 pentangular, the side of the radial cellule much the 

 smallest ; two bullae and recurrent nervures each with 

 one : metathorax with the sutures black : scutel rounded: 

 abdomen clavate, falcate, gradually narrowed to the base, 

 somewhat polished ; posterior margins of the segments 

 obsoletely yellowish ; the base of the segments or incisures 

 black : pleura ^ud pectus with black sutures; separating 

 suture between the pleura and metathorax black, includ- 

 ing a yellow^ line : oviduct as long as the abdomen ; pos- 

 terior pair of tibiae and tarsi paler than the thighs ; poste- 

 rior coxae nearly as long as the thighs. 



Length about three fifths of an inch. 



This insect differs' somewhat in appearance from its 

 congeners. The form of the abdomen, excepting that it 

 is not compressed, the fact that it originates higher upon 

 the metathorax than others, and the elongated posterior 

 coxae give it a little the air of a Fcenus, but the numer- 

 ously jointed antennae place it in this family. 



