86 



PRELIMINARY LIST 



sides rectilinear, gradually narrowed towards theclypeus, superior angle rather long, and 

 more tlian a riglit angle. Face and vertex finely 

 sliagreened. Disc of vertex with two distinct pits near 

 the eyes, nearer to the eyes ttjan to each other, length 

 at middle a half longer than that next the eye, width 

 between the .ryes equal to the length at middle. Pro- 

 notum twice as wide as long, one-seventh longer than 

 the vertex, curvature four-ninths of the length, pos- 

 terior margin very slightly concave, anterior one- 

 fourth glabrous, posterior three-fourths transversely 

 subobsoletely wrinkled and with scattered indistinct 

 punctures. Scutellum broader than long, shagreened 

 more coarsely than the face. Last ventral segment 

 with the hind margin broadly and deeply notched, the 

 sides of the not.-h slightly sinuated. Color ashy gray 

 sometimes tinged with fuscous. Face light yellow to 

 dusky, the sutures sometimes darker. Two broad dark longitudinal lines e.xtending over 

 vertex and pronotum, these bands on the anterior two-thirds of vertex bordered inter- 

 nally with black, and adjoined externally by a blaclc spot. Vertex with a fine 

 black median line on the posterior two-thirds, ecutebum varying from brown-marked 

 to black. Elytra little longer than the abdomen, whitish, nervures white throughout,, 

 bordered ^vith dusky or testaceous, apex with three black spots, one internally and two- 

 external I y, each elytron with seven white spots, two on the external apical border, two in 

 the center, one large one basal! y and two on the internal border of the clavus. Venter light 

 to dark yellow, sometimes bordered with blackish, the last segment with black spots on 

 the sides of the notch. Legs yellow, tibial spurs arising from black spots, posterior tibiae 

 black tipped internally. 



Length of female i mm., of male 3.5 to 3.7.5 mm. Describt>d from four males and three 

 females. 



Steamboat Springs, July 12th on Carex (Baker). 

 Deltocephaliis hituaculatiis n. sp. 



Female: Face about as long as wide; clypeus short and broad, one-seventh longer 

 than broad, not quite half as long as the front, gradually narrowing towards the rounded 

 apex, basal suture straight: lorae sulaovate, two-fifths as wide and nearly as long as the 

 clypeus; genae broadly rounded outwardly, attaining the end of theclypeus; f ront one- 



eiglith longer than wide, sides almost 

 straight, superior angle nearly a right 

 angle. Face and vertex roughly slia- 

 greened. Disc of vertex slightly trans- 

 versely depressed, length at middle once 

 and a half that nest the eye, width be- 

 tween eyes once and two-sevenths the 

 length at middle. Pronotum two times 

 wider than long, length slightly less tlian 

 thit of vertex, curvature nearly one-lia f 

 of length, posterior margin very slightly 

 qoncave, anterior fourtli glabrous, pos- 

 terior three-fourths very finely trans- 

 versely wrinkled. Hind margin of last 

 ventral segment with a broad short tootlj, 

 on either side of which is a shallow notch, 

 posterior angles rounded, obtuse. Pale yellowish green. Face with sutures black, four 

 or five transverse black dashes on eitlier side of the front above, which may run together 

 form'ng a longitudinal band just witliin the margin. Vertex with two large oval black 

 spots on the apex nearer the center than the eyes. Elytra greenish, subhyaline. Terguni 

 black. Venter blacli with lateral and apical margins of segments yellowish. Ovipositor 

 black, pygofers more oriels streaked with black longitudinally. Legs light yellow. 



Male: Differs from the female as follows: Front without black markings except in 

 somb specimens a spot on either side beneath antennae. Front two and a half times as 



