46 AMERICAN ENTOMOLOGY. 



Li/cus sanguinipennis nobis, Journ. Acad. Nat. Sci., vol. iii. 

 p. 178. 



Desc. Body deep black, polished : rostrum prominent ; thorax 

 broad, not narrowed before : the transverse diameter exceeding 

 the longitudinal : livid-black ; lateral margins a little recurved, 

 pale sanguineous ; a carinate line on the anterior margin, termi- 

 nating in a groove which extends to the base : posterior angles 

 a little prominent : scutel black : elytra pale sanguineous, with 

 elevated lines, and intervening transverse ones : wings a little 

 dusky, with brown nervures. 



One individual only, occurred to Major Long's exploring party, 

 near the base of the Rocky Mountains. It is widely distinct 

 from the preceding species. 



The lower right figure. 



[I have a species of Calopteron from Mexico which agrees 

 with the characters here given. — Lec] 



Lycus perfacetus. — Specific character. Black : thorax each 

 side rufous ; elytra striate. 



Desc. Body deep black : head polished, with a deeply im- 

 pressed longitudinal line : antennae opake, compressed, a little 

 serrated : second joint more than half the length of the third, 

 which is as long as the fourth, though less dilated : thorax some- 

 what unequal, polished black, with broad rufous lateral margins : 

 an impressed longitudinal line; posterior angles acute: elytra with 

 slightly impressed striae, and rounded interstitial lines : beneath 

 polished black. 



Obs. Inhabits Pennsylvania. 



The lower left figure of the plate. 



[This species is a Dictyopterm Latr., as now restricted : a 

 synonym of it is D. substriatus Lec, Jour. Acad. Nat. Sci., Phil. 

 2d ser. 1, 71.— Lec] 



ICHNEUMON. Plate XXII. 



Generic character. Antennas more than twenty -jointed ; ab- 

 domen ellipsoidal, composed of more than five segments, and 

 attached to the thorax by a portion only, of its transverse diame- 

 ter, by an abrupt slender peduncle ; all the wings having very 

 distinct nervures"; extremity of the abdomen of the female very 



