104 



PRELIMINARY LIST 



Neocoelidia tumidifrons n. sp. 



Face a thirteenth wider than long; clypeus two-thirds longer than broad, 

 sides nearly parallel, apex nearly truncate, hasal suture strongly curved; lorae 

 nearly as long and two-thirds as hroad as the clypeus; gcnae broad, somewhat depressed 

 below the eye-, ou'er margin broadly rounded, very broad be- 

 low the lorae; front tumid, sides nearly parallel, broad below, 

 one-fourtli longer than broad, nearly twice the length of the 

 clypeus, superiorly obtusely rounded. Face shagreened. Ver- 

 tex tumid, elevated, coarsely shagreened, a shallow longitu- 

 dinal depression on either side, three-fifths longer on the 

 middle than next the eyes, width between the eyes once and 

 two-sevenths the length at the middle. Pronotum coarsely 

 transversely rugose, three times 9,s broad as long, four-fifths 

 the length of the vertex, curvature three-sevenths of the 

 length. Scutellum with lateral margins broadly, sharply, and 

 deeply depressed, the scutellar suture subobsolete, nearly 

 straight. Last ventral segment long, narrowing to an acute 

 point, nearly e(iualling the pygofers. Color light green, unicol- 

 orous below, except the black tips of the pygofers. Two small 

 black sp<)ts within the basal angles on the edge of the elevated 

 portion of the scutellum. 



Length 3.5 mm. Described from two males. 



Fort Collins, June 6th (Baker). Pleasant 

 Valley, seven miles north-west of Fort 

 Collins, June 12th (Gillette). 



Gnathodtis abdominalis YanD. 



Det. VanDuzee. 



Colorado (A^anDuzee, 4). 



Colorado Springs, August 

 2d; Glenwood Springs, August 

 24th; Grand Junction, August 

 26th, on sugar beet (Gillette). 

 Fort Collins, June 9th on bar- 

 ley; Steamboat Springs, July 

 16th (Baker). Colorado City, 

 August (Tucker). 



Gnathodiis confusus n. sp. 



Face one-fifth wider than long; clypeus twice as long as broad, 

 basal suture strongly curved, somewhat constricted near the base, 

 broadest near the tip; lorae about three-fourths as broad and 

 three-fourths as long as the clypeus; genae broadly depressed be- 

 neath the eyes, margin beneath the eyes inverted, broadly round- 

 ed below, moderately broad below the lorae and attaining the tip 

 of the clypeus; front one-fifth longer than broad, once and two- 

 thirds the length of tfie clypeus, superiorly broadly rounded. 

 Face, vertex, and pronotum finely shagreened. Vertex scarcely 

 longer on the middle than next the eyes, width between the eyes 

 slightly more than four times the length at the middle. Pronotum 

 slightly less than twice as broad as long, length nearly four times 

 that of the vertex, curvature about one-half of length, consider- 



