908 THK CANADIAN ENTOMOLOGIST. 



Colour : Vertex tawny, with a darker dash either side the apex in the 

 male. Face rusty brown, the front smoky with light arcs. Pronotum 

 brown or cinereous-brown, the anterior margin lighter. Klytra rich 

 brown, sparsely irrorate with milky white dots, the ncrvures towards the 

 apex lighter. 



Genitalia : Female segment onelulf as long as its basal width, the 

 lateral margins slightly narrowing, the |)OSterior margin truncate or very 

 slightly sinuate, the median half dark-marked. Male valve obtusely 

 triangular, plates together triangular, regularly narrowing to the almost 

 truncate tips, concealing the pygofers, but beyond which a pair of sickle- 

 like black hooks extend. 



Described from a single pair from Medford, Oregon, collected by the 

 author. 



Thamnottttlx g/omerosa, n. sp. 



Resembling bullata, but smaller and more slender, with irregular 

 fuscous markings. Length, female, 4.75 mm. 



Vertex including the reflexed portion of the swollen front as broad as 

 in bullata and much longer, nearly twice as long on middle as against the 

 eye. Vertex without a definite margin, merging into the front, which 

 is broad and much inflated, its margins nearly parallel until just before 

 the apex where they abruptly round in, the apex tumid, broader than 

 clypeus and elevated above the level of the latter. Klytra moderately 

 long, slightly flaring, venation regular, the outer anteapicals usually curved 

 and a few extra veinlets along the claval suture. 



Colour : Vertex dirty straw, a black spot against either eye, behind 

 the ocellus, a pair of oblique dashes behind the apex and another pair of 

 obscure ones just in front of the basal angle, fuscous. Face dirty straw, 

 the. sutures, a spot above the antennal socket on either side, and about 

 five short arcs across the most produced part of front, fuscous. Pronotum 

 and scutellum cinereous, irregulaily mottled with fuscous, the elytra pale 

 cinereous, with the veins lighter and slightly fuscous lined. 



(lenitalia : Female segment short, truncate posteriorly with the lateral 

 angles slightly produced or with the posterior margin slightly concavely 

 excavated according to the curvature. 



Described from two females collected by the author at Grand 

 Junction, Colorado. One example is almost lacking in the fuscous 

 markings. 



