THE CANADIAN ENTOMOLOGIST. 151 



CEcleus fulvidorsum, n. sp. 



Form of obtusus nearly, but smaller and with a tricarinate scutellum. 

 Colour pale yellow, scutellum fulvous. Length: $ 5 mm., J, 4 mm.j 

 width r.75 mm. 



Vertex a little over three times longer than wide, parallel margined, 

 meeting front in an obtuse angle as in obtusus, front short and broad at 

 base, where it is half as wide as at apex. Pronotum angularly excavated 

 posteriorly, scutellum tricarinate or with another pair of very faint carina?. 



Colour : pale creamy yellow, the clypeus and scutellum fulvous. 

 Elytra pale creamy, the nervures concolorous, dotted with testaceous 

 beyond the apex of clavus. 



Male genital segment long, posterior margin produced in the form of 

 a narrow finger-like process, slightly widest at base. ' Styles stout, 

 subcylindrical, but little longer than the process, their apices nearly 

 truncate, a pair of short stout processes on their inner faces just before 

 the apex. 



Described from twenty-three specimens from Grand Junction, Colo., 

 and one from Phoenix, Ariz. The pale yellow colour and the tricarinate 

 scutellum easily separate this species. 



CEcleus acutus, n. sp. 



Form of lineatus nearly, lighter coloured, with a narrower vertex 

 and tricarinate scutellum. Length 5.5 mm.; width 2 mm. 



Vertex very long, simply a line on the posterior half, widening out 

 slightly beyond the eyes, extending nearly hslf its distance in front of 

 eyes and meeting front in an acute angle, front very narrow, evenly 

 rounding in profile. Pronotum long and shallowly excavated posteriorly, 

 scutellum tricarinate, the two lateral carinae very near the median one. 



Colour: pale yellow, slightly washed with orange on disc of scutellum. 

 Elytra subhyaline, the nervures light with very small fuscous punctures. 



Male genital segment produced into a broad short tooth with an 

 obtusely rounding apex. Styles narrow, twice as long as the tooth, 

 broadened at the apex, before which there is a recurved tooth on the 

 inner margin. 



Described from two males from Port au Prince, Hayti. (R.J. Crew.) 



A glance at the long vertex and the three close-set carina; on the 

 scutellum is all that is necessary to determine this species. 



