102 



PRELIMINARY LIST 



September lltli on 



Male: Differs from the female as follows:— Generally darker colored. Basal joint of 

 antennae distinctly margined internally with black. Vertex more strongly depressed. 

 Elytra with veins dark brown. Venter black with tips of segments yellowish. Plates- 

 yellowish brown streaked with black. Black spots on tibiae larger. 



Length of female 6-6.5 mm, of male 5 mm. Described from seven females and one male, 



(llenwood Springs, August 24th; Manitou, September 29th 

 on oak (Gillette). 

 ISutettix seminuda Say. 



Montrose, June 24th; Fort Collins, 

 apple (Gillette). 



Mutettix terebrans n. sp. 



Face one-eighth wider than long; clypeus one-sixth longer than broad, narrowing to- 

 a truncate apex, deeply transversely depressed near tlie apex and broadly and shallow ly 

 depressed near the base, the lateral margins curved; lorae as long and one-half as broiid 

 as the clypeus; genae slightly depressed near 

 tlie eyes and toward the lorae, outer margin 

 rounded, strongly margined, and slightly ex- 

 ceeding the clypeus; front scarcely longer 

 than broad, once and four-fifths the length 

 of the clypeus, gradually narrowing to near 

 the clypeus, superior angle obtusely rounded. 

 Face and anterior third of vertex coarsely 

 shagreened with scattering shallow punc- 

 tures. Disc of the vertex with a small de- 

 pression at the tip and a broad transverse 

 depression before the tip and between the 

 compound eyes, length at the middle once 

 and a fourth that next the eyes, width Ije- 

 tween the eyes once and a half the length at 

 the middle. Pronotum considerably more 

 than twice as l)road as long, length once and 

 a fourth that of the vertex, curvature about 

 one-half of tlie length, shagreened on the an- 

 terior third, transversely wrinkled on the 

 posterior two-thirds, posterior margin slight- 

 ly concave. Scutellum coarsely shagreened, slightly shorter than the pronotum. Last 

 ventral segment witli the hind margin broadly and very deeply notched, the notch with a 

 short, strong, rounded tooth at the center, the lateral angles produced and subacute. 

 Ovipositor extremely long, as long as the body back of tlie head, exceeding the uygofersby 

 aljout 1 mm., and the wings by .3 mm. Color tawny yellow. Face light brownish yellow, 

 about six transverse dark dashes on either side of the front; genae with a dark spot below 

 tlie eyes and a dark point near the lorae. Vertex with a large rectangular spot eitlier 

 side next the eyes and a smaller one at the apex, the sunken pit just buck of this spot 

 blackish, and about four indistinct infuscated spots between the eyes near the hind 

 margin. Pronotum with two small transverse black spots near the median line and abnut 

 one-third of the length bacK of the front margin, back of the compound eyes on either 

 side are about six small black spots, back of these spots the disc is brownish yellow. 

 Scutellum yellowish, transverse groove black. Elytra yellowish subhyaline. Tergun*. 

 yellowish with six longitudinal black bands. Venter yellowish with basal segment black. 

 Pygofers yellow streaked with black, valves yellow on the lower margins, black at the 

 sides. Legs dirty yellow, tibial spines brown, tips of tarsi infuscate. Propleura with a 

 black spot. 



Length 4.75 mm. Described from one female. This unique form introduces a very 

 ni^vel element into the genus Eutetiix. 



North Park, July 20th (Gillette). 



