THE CANADIAN ENTOMOLOGIST. 155 



the median carinse obsolete at base, pronotum short, scutellum with five 

 carinae. 



Colour : vertex and front fuscous, the carina light, scutellum fuscous 

 on disc, the carina? and lateral margins light testaceous. Elytra hyaline, 

 the nervures pale, rather sparsely dotted with fuscous, becoming thicker 

 towards apex, legs and below mostly pale. 



Male genital segment long and parallel margined, the ventral margin 

 produced into a broad triangular tooth which is produced at apex into a 

 shoit stout tooth. Styles in a horizontal plane, longer than the tooth, 

 strap shaped, their outer margins rounded at apex, their inner ones 

 produced into short reflexed hooks. 



Described from one female and two males from Phcenix, Ariz. 

 (Kunze.) The narrow produced vertex will at once distinguish this 

 species. 



CEcleus ex cava tits, n. sp. 



Form and structure of lineatus nearly, narrower, darker, with a 

 broader vertex. Length 5 mm.; width 1.75 mm. 



Vertex parallel-margined, twice as wide as in lineatus. length three 

 times its width, projecting in front of eyes as far as in lineatus and 

 meeting the front in a still sharper angle, front broader above and 

 narrower below than in lineatus, base over half as wide as the apex, the 

 median carina extending to base. Elytra long, narrow, folded at rest. 



Colour : vertex and face black, the carinte light, scutellum fuscous, 

 the five carinse and sometime the margin testaceous. Elytra milk-white, 

 the sutural margins creamy, interrupted with black near the middle and 

 again at apex of clavus, nervures pale, thickly beset with large black 

 spots somewhat confluent towards apex. Below fuscous. 



Male genital segment long cylindrical, the posterior margin 

 ventrally produced into a long narrow tooth, constricted at the base. 

 Styles long, the shape hidden by the wax with which they are coated. 



Described from four specimens, three females and one male, from 

 Wray, Lamar and Fort Collins, Colo. 



CEcleus obtusus, n. sp. 



Resembling excavatus, but stouter and with a shorter vertex. 

 Length : $ 6 mm., $ 5 mm.; width 2 mm. 



Vertex rather narrow, three and one-half times as long as its apical 

 width, still narrower at base, extending scarcely more than the width of 



