THE CANADIAN ENTOMOLOGIST. I 7.") 



punctures. The insect here described approaches very near to C. impressa 

 Marsham, but it is sufficiently distinguished not only by its colour but 

 chiefly by the very visibly denticulated sides of its prothorax. [As the 

 specific name of this insect is preoccupied, it has been named C. Kirbyi 

 by Dr. Le Conte. Taken by Agassiz's Expedition on the north shore of 

 Lake Superior.] 



FAMILY CRYPTOPHAGID.E. 



[i 12. j 158. Atom aria atra Stephens. — Length of body 2 /z lines. One 

 specimen only taken. 



Body black, punctured, glossy. Mouth reddish ; antennae rufous : 

 elytra pubescent, piceous, rufous at the tip : anus and legs rufous. 



159. Crvptophagus humeralis Kirby. — Length of body r^ line. 

 Several specimens taken in Lat. 54 . 



Body subcylindrical, black ; above punctured and pubescent, rather 

 glossy. Prothorax rather widest behind, with the basilar angles somewhat 

 depressed : scutellum transverse, obtusangular : shoulders of the elytra 

 obscurely rufous : legs, especially the tibiae and tarsi, pale chestnut. 



160. Crvptophagus concolor Kirby. — Length of body body 1 l / 2 

 line. A single specimen taken in Lat 54 . 



[113]. In shape, sculpture and pubescence this species resembles the 

 preceding, but it is smaller, and the whole insect is entirely of one colour 

 — dark ferruginous. 



N. B. — The two species last described differ from the other Crypto- 

 phagi in having the thorax without serratures or denticles, and the scutel- 

 lum obtusangular, and may perhaps form a subgenus. 



FAMILY DERM KSTID/E. 



161. Attagenus cvlindricus Kirby. Plate vii., fig. 3.- Length of 

 body 2 lines. Two specimens taken in the Rocky Mountains. 



This little species has much the air of a CryptopJiagus, but belongs to 

 the present genus. The body is subcylindrical, dark-piceous, very minutely 

 punctured, and covered, but not thickly, with decumbent cinereous hairs. 

 The two first joints of the antennae are large, globular, and of the same 

 colour with the rest of the body ; the intermediate ones very minute and 

 pale rufous; the three last are incrassated and form an oblong piceous 

 knob, of which the terminal joint is as long as the two preceding ones, 

 ovate and acute : the prothorax behind is very obsoletely trilobed with 

 the intermediate lobe rounded : the tarsi are rufous. (Unknown to Dr. 

 Le Conte.] 



