152 THE CANADIAN ENTOMOLOGIST. 



Colour : vertex fuscous, the carinae light yellow, a definite light spot 

 on the carinae against the eyes, face testaceous, the carinae slightly lighter, 

 a larger "light spot on each side below the antennae. Pronotum dark, the 

 carinae and margins broadly light, scutellum testaceous, a dark stripe 

 outside the carinae. Elytra milky or hyaline, nervures very lightly 

 marked, stigma and cross nervures fuscous. 



Male pygofers long, ventral notch rather shallow, with a slender 

 tooth, lateral margins of pygofers produced into a pair of teeth. Styles 

 extending half their length beyond the pygofers, their inner margins 

 appressed, narrow, nearly cylindrical at base, the apical half broad and 

 obliquely truncate, together spear-shaped. Pygofers black, the posterior 

 margins, tooth and styles, yellow. 



Described from twenty-four specimens from Ivans., Calif., and 

 various parts of Colo. 

 Oliarus compledus, n. sp. 



Form and general appearance of aridus, but much smaller. Smaller 

 and narrower than humilis. Length: ? 5.5 mm., $ 4.5 mm.; width 

 1.75 mm. 



Vertex nearly half longer than broad, narrowing from the base to the 

 narrow truncate apex, lateral foveae long and narrow. Vertex definitely 

 produced in front of eyes and angulate with front, front narrower than in 

 aridus. Elytra long and narrow, with a definite stigma. 



Colour : vertex black, the carinae light yellow ; face, pronotum and 

 scutellum varying from testaceous to black, the carinae usually light. On 

 very dark specimens those on scutellum often obscure. Elytra subhyalinei 

 the nervures yellow and unmarked with black spots before the stigma. 

 Back of this more or less smoky and black punctured. 



Male pygofers rectangularly notched, with a long slender tooth- 

 Styles extending one-third their length beyond the pygofers, then curving 

 around and passing back under their margins again. 



Described from twenty-four specimens from Hayti, W. I., Md., 

 Kans., Ariz., and various places in the southern half of Colo. The small 

 size and unmarked nervures will separate this species from any other 

 described. 



Oliarus sementinus^ n. sp. 



Short and robust, the elytra flaring as in humilis. Colour of 

 compledus nearly. Length: $ 5 mm., $ 4.25 mm.; width 2.25 mm. 



