THE CANADIAN ENTOMOLOGIST. 229 



Body black, rather glossy, minutely punctured, downy with pale down. 

 Antennae, mouth, and palpi rufous or dusky-rufous ; labrum and mandibles 

 piceous ; nose rounded, not reflexed, not overshadowing the mouth ; 

 antennae serrated on the inner side in the middle, last joint acuminated : 

 prothorax short, widest behind, very obsoletely channelled, sides submar- 

 gined ; posterior angles dentiform, strongly carinated : elytra piceous, or 

 rufo-piceous, very slightly furrowed with oblong punctures in the furrows, 

 interstices minutely punctured : margin of the abdomen and of the penulti- 

 mate segment, rufous. [Previously described as Elater memnonius Herbst. 

 Quite common in Canada ; taken also in Maine, Ohio, Pennsylvania, 

 Alabama (Le Conte).] 



[148]. 197. Perimecus fulvipes Herbst. — Length of body 7 lines. 

 Taken in Canada by Dr. Bigsby. 



Body black, punctured, glossy ; gloss and colour obscured by nu- 

 merous decumbent pale hairs. Antennae pale chestnut, with the third 

 joint double the length of the second : posterior angles of the prothorax 

 carinated : elytra with nine rows of large and deep punctures, interstices 

 minutely punctured : legs pale chestnut. 



The only difference that I can discover between the American and 

 European specimens, is in the length of the third joint of the antennae, 

 which in the latter is scarcely longer than the second ; and this may 

 probably be a sexual distinction. [Belongs to the genus Melanotus Esch., 

 and is synonymous with M. ( ' Cratotiychus ) castanipes Payk.] 



19S. Perimecus communis Gyll. — Length of body 6V3 lines. Se- 

 veral specimens taken at Cumberland-house, Lat. 54 . 



Very similar to the preceding species, but much smaller. Body chest- 

 nut-coloured, darker or lighter in different specimens, punctured, glossy, 

 hairy : third joint of the antennae twice the length of the second : pro- 

 thorax thickly punctured, obsoletely channelled, chiefly behind : elytra, 

 antennae, and legs rather paler than the rest of the body, the former sculp- 

 tured as in the last species. [Taken in Canada. " Abundant as far as 

 Nebraska" (Le Conte). Belongs to the genus Melanotus. J 



[149.J 199. Perimecus similis Kirby. — Length of body 6^ lines. 

 Taken in Lat. 54 . 



I should have given this as merely a variety of the last ; but besides 

 its blacker body, the punctures of the prothorax are not nearly so 

 numerous, and there is no appearance of its being channelled : the breast 

 is chestnut. [Belongs to the genus Melanotus •.] 



200. Ctenicerus Kendalli Kirby. — Plate ii., fig. 7. Length of 

 body 7 lines. A single specimen taken in Lat. 65 . 



