r[lE CANADIAN ENTOMOLOGIST 211 



NEW COLEOPTERA. IX. 



BY H. C. FALL, 

 Tyngsboro, Mass. 



Omophron Lat. 



O. decoloratum, sp. nov. 



Broadly oval, form nearly as in robustum, size a little larger than the latter, 

 color above testaceous, beneath brown fading to yellow at the margins; mark- 

 ings similar in form and position to those of robustum except that the transverse 

 frontal plaga is not produced forward at middle, the sutural stripe is not dilated 

 before the apex, and they are throughout of a pale brownish tint, without trace 

 of metallic lustre. The surface throughout is polished and strongly shining, 

 the elytral stride fine, entire and set with rather distant punctures. 



Length 6.7 to 6.9 mm.; width 4.5 to 4.6 mm. 



Described from three examples bearing label Gray Co., Kansas, July 9-15, 

 1917. Specimens were sent me by Mr. W. Knaus, who received them from the 

 University of Kansas. The type is a female. 



This species falls with pallidum and robustum by Casey's table.* Pallidum 

 differs distinctly by its smaller size and dull alutaceous lustre, in which it re- 

 sembles gilcB. Decoloratum is more nearly allied to robustum, but the pale, 

 washed-out and rather small and indefinite markings, which are not at all due 

 to immaturity, readily distinguish it. 



In the Canadian Entomologist — 1909, p. 276 — Casey describes 0. brevipenne 

 from Ohio specimens. As its author remarks, this is the species which generally 

 goes as robustum in collections. A careful comparison of Ohio specimens with 

 the type of robustum shows them to be practically identical in all respects. 

 The unique type of robustum was described as coming from Nova Scotia, but so 

 far as I know no other specimens have been taken in that region, and I very 

 much doubt the correctness of the locality; in any case it is quite certain that 

 the Ohio specimens are the same thing. 



Heterocerus Fab. 



Among a lot of miscellaneous Manitoban things recently sent for deter- 

 mination by Messrs. Wallis and Criddle, I find two undescribed species ol this 

 genus. It is especially noteworthy that both belong to the subgenus Littorimus, 

 of which Horn recognized but a single representative in his Synopsis of the North 

 American species. Opportunity is taken to make known two other unde- 

 scribed species, one of them a Littorimus, which have stood in my collection for 

 many years. 



H. minutus, sp. nov. 



Very small; entire body and appendages testaceous, the head sometimes 

 feebly infuscate; pubescence short, pale, marginal fringe short. Head and 

 thorax densely, very finely punctate; elytra finely punctate, the punctures 

 separated by about their own diameters, the interspaces excessively minutely 

 punctulate. Prothorax (cf) strongly transverse, evidently wider than the 

 elytra, sides moderately arcuate, not narrowed in front, with the usual apical 

 and basal constrictions, base not visibly margined. Elytra without trace of 

 stria?, but with a broad sulcus extending tending backward from the intrahumeral 



*Coleopt. Notices VII, p. 301. 



September. 1920 



