1864.] 143 



Hah. — Rocky Mountains, Colorado Territory. 



Resembles Idi. Ormenus in size and form, but otherwise quite dis- 

 tinct. 



Section 2. 



14. Ich. vittifrons, n. sp. 



Black; face whitish, with a broad black stripe down its middle; scutellum 

 white ; wings fuscous, hyaline at base ; central area of metathorax indistinct. 

 Male. — Head black, the face below the antennae, clypeus, orbits not 

 reaching the vertex behind, and the middle of the mandibles, white ; 

 the face with a broad black vitta extending from the base of the an- 

 tennas to the anterior margin of the clypeus ; antennae porrect, more 

 than half the length of the body, black, the basal joint whitish beneath. 

 Thorax black, shining, rather sparsely punctured, a well impressed lon- 

 gitudinal line on each side of the mesothorax in front, which become 

 obsolete before reaching the disk ; tegulse, a sutural line before and a 

 short line beneath the wings, white ; scutellum rather flat, white, with 

 a deep impression at base and connected to the mesothorax on each 

 side by a sharply defined cai'ina ; behind the scutellum a short trans- 

 verse white line ; metathorax confluently punctured, the elevated lines 

 indistinct, the central area small, subobsolete, its shape indistinct. 

 Wings broad, dark fuscous, with a strong violaceous reflection, the base 

 especially of the posterior pair, hyaline; nervures black, areolet 5-angu- 

 lar or subtriangular, rather oblique. Legs black, the anterior coxa3 

 beneath, a spot on the intermediate coxae beneath, the anterior and in- 

 termediate femora exteriorly at base, their tarsi and all their tibiae 

 exteriorly, white. Abdomen elongate, black, closely punctured, shin- 

 ing, especially at tip ; basal segment deeply punctured, the peduncle 

 rather short; basal fovese of the second segment deep and transverse; 

 beneath, black. Length 9 lines; expanse of wings 15 lines. 

 fla6.— Delaware. Dr. Thos. B. Wilson. 



15. Ich. audax, n. sp. 



Black ; face, scutellum and legs in part, yellowish-white ; wings subhyaline ; 

 central area of metathorax transverse. 



Male. — Head black, the face beneath the antennae, frontal orbits not 

 reaching the vertex, clypeus, a spot on the mandibles, and the palpi, 

 yellowish-white ; antennae two-thirds the length of the body, black, the 

 basal joint beneath whitish. Thorax black, finely and confluently punc- 

 tured ; teguloe except at base, a sutural line before and a short line 



