1865.] Ill 



Huh. — Rocky Mountains, Colorado Territory. (Ridings.) Coll. Ent. 

 Soc. rhilad. 



Two % specimens. This may be the S of E. jidoocinctm. 



t). Eucerceris fulvipes, n. sp. 



Black; sides of face, line between antennae, clypeus entirely in 'J, , inter- 

 rupted into three spots in 9 , collar, two or three spots beneath the wings, tegu- 

 Ise, two large spots on metathorax, line on both scutellums, and entire bands 

 on abdomen, yellow; legs fulvous, wings hyaline, the aj^ical costal margin 

 fuscous, violaceous. 



Female. — Black, shining, deeply and closely punctured, more sparse 

 on the mesothorax and scutellum ; a spot on each side of the face, a 

 line between the antennae, a spot on each side of the clypeus, and a 

 cuneiform spot behind the eyes, yellowish ; middle of clypeus and the 

 mandibles fulvous, the latter black at tips, one specimen has a yellow 

 spot on the middle of the clypeus ; antennae black, the scape within 

 at tip, and the third and fourth joints of the flagellum, fulvous. Tho- 

 rax : line on the collar, tubercles and a spot behind, line on the scu- 

 tellum and postseutellum, a large ovate spot on each side of the meta- 

 thorax, and a small oblique line on each side of the enclosed basal 

 space, pale yellowish; the latter obliquely striated, with a deep central 

 channel ; tegulas fulvous, sometimes with a spot in front. Wings hya- 

 line ; the costa, from the base of the first submarginal cell to the apex 

 of the wing, broadly yellowish-fuscous, slightly violaceous ; nervures 

 honey-yellow. Legs entirely bright fulvous. Abdomen shining, with 

 deep sparse punctures ; basal segment with a broad pale yellow band, 

 contracted in the middle ; second and three following segments each 

 with a continuous, subapical. pale yellow band, more or less dilated on 

 the sides ; apical segment immaculate, tinged with brownish, opaque, 

 shaped and sculptured as in $ E. fldvocinctus ; beneath black, immac- 

 ulate. Length b\ lines ; expanse of wings 7? lines. 



Male. — Difi'ers from the female as follows : — the sides of the face 

 are broadly yellowish-white, extending for a short distance above the 

 antennae on the anterior orbit ; there is a yellowish spot just above the 

 clypeus, connected with a line of the same color between the antennae 

 which reaches to the anterior ocellus; the clypeus entirely, the man- 

 dibles except tips are yellowish-white ; the spot behind the eyes is 

 round; the scape is yellowish within, and the second, third and fourth 

 joints of the flagellum are fulvous ; there are two large yellowish- 

 white marks between the wings, the lower one connected beneath with 

 a longitudinal mark of the same color between the four anterior coxae ; 

 the enclosed basal space of the metathorax is immaculate; all the coxae 



