T.IE CANADIAN ENTOMOLOGIST 11 



Mordellistena rufa, sp. nov. 



Hind tibia uith two ridges, the anterior extending across the 

 outer face of the tibia; first joint of hind tarsus with four and the 

 second with two ridges. 



Ferruginous; elytra with the lateral margins from base to the 

 middle and the suture black. Mesosternum black; hind coxal 

 plate and abdomen clouded with black; anal style long and slender. 

 Length 4 mm. 



One specimen from Palos Park, Illinois, May 28. 



This species resembles M. ustulata, differing only in the ridges. 

 It should follow M. splendens. 



Mordellistena insolita, sp. nnv. 



Hind tibia with three oblique ridges, the upper one less de- 

 veloped; the first and second joints of hind tarsus with three and 

 the third with two small ridges. 



Subcuneate; head, thorax, anterior and middle femora ferru- 

 ginous, tibia and tarsi darker; hind legs and under surface black, 

 with cinereous pubescence. Elytra black, with silky, iridescent 

 pubescence; anal style black, long and slender. Length 5 mm. 



Two specimens from Lee County, Texas, April 1. Collected 

 by Rev. G. Birkmann. Paratype in collection of A. B. Wolcott. 



This species somewhat resembles M. texana, but differs in the 

 tibial and tarsal ridges, texana having four ridges on the tibia, 

 and not an}' ridge on the third joint of the hind tarsus. It should 

 follow M. singular is. 



Mordellistena vera, sp. nov. 



Hind tibia with three oblique ridges and a rudiment of a fourth ; 

 first joint of hind tarsus with four, second with two, and third 

 with two ridges. 



Black; head and thorax sparsely covered with testaceous 

 pubescence; base of antennae, mouth-parts and legs reddish brown. 

 Elytra covered with silky, reddish-brown pubescence, more densely 

 on the suture, and forming a narrow, sutural line. Beneath black, 

 with testaceous pubescence; abdominal segments reddish at apex; 

 anal style long and slender. Length 5-5.5 mm. 



Three specimens. Type from St. Louis, Missouri, July 7. 



