262 THE CANADIAN ENTOMOLOGIST. 



Lamenia obscura, n. sp. — Form and general appearance of vulgaris 

 nearly, usually slightly smaller and paler. Readily separated on the male 

 genitalia. Length, 4 mm. 



Vertex short, sloping, half wider than long, separated from front by a 

 slight carina ; front rather broad, nearly flat, a faint median carina ; 

 clypeus convex in both diameters, rather prominent ; median carina much 

 elevated, acute ; elytra about as in vulgaris, not as strongly sinuate on 

 costa. 



Colour : slaty black, pruinose, giving this species a powdered gray 

 appearance. Head black, the carinate margin of vertex in front pale, 

 lateral carina; of pronotum pale. Elytra slaty at base, smoky, subhyaline 

 at apex, a spot on costa, where the mediastinal nerve touches it, and the 

 two transverse nervures at the bases of the apical cells light. Legs pale ; 

 rostrum pale, apical segment black. 



Genitalia: last ventral segment in male transverse., not enlarged, 

 posterior margins straight ; plates widely separated at base by an 

 equilaterally triangular notch, their inner margins confluent from the apex 

 of notch to the upturned tips, together transversely convex, forming a long, 

 nearly parallel margined trough with a rounding apex. Their apices are 

 furnished with long slender teeth set at right angles to the plate. In the 

 normal position these teeth cross each other and close the end of the 

 trough. 



Described from twenty-two specimens taken at Greeley, Colo., by the 

 author, and two specimens from How Creek and Lake Worth, Fla , in the 

 collection of Mr. Heidemann. 



Lamenia inflata, n. sp. — -Form of vulgaris nearly, slightly longer and 

 narrower, dark smoky brown, paler on pronotum and face. Length, 

 4 5 mm. 



Vertex rather narrow, rounding to the retreating front ; front full, 

 without a median carina ; elytra long and narrow, distinctly notched at 

 the junction of the mediastinal and costa ; venation as in Califomica. 



Colour : vertex, front and pronotum pale testaceous brown ; clypeus 

 smoky brown ; elytra dark smoky brown, the costal incision and the 

 transverse nervures before the apex faintly marked with light ; legs and 

 rostrum pale. 



Genitalia : last ventral segment in the male longer than wide, 

 convex, thickened, the posterior margin sinuate ; plates distant from each 



