Ill 



scribed by the segment of a circle ; antennae a little shorter than the 

 prothorax, joints obconical, four last lentile-shaped ; prothorax a little 

 wider than the head, oblong with rounded sides ; scutellum rouii..ed at 

 the apex ; elytra taken together wider than the prothorax, a little dilated 

 beyond the middle, i;nd then sloping to the apex, which is acute ; very 

 unequal with numerous irregular deep impressions and rugosities, variously 

 separated by a number of elevated lines or obtuse ridges rvmning con- 

 fusedly in various directions ; legs long ; thighs incrassated ; tibiae and 

 tarsi slender. 



[234.] 318. Tknebrio MoLiTOR Z/;/;/. — I^ngthof body 7J/. lines. 

 Taken in Nova Scotia by Capt. Hall. 



Body oblong-Hnear, minutely and numerously punctured, a little 

 glossy, naked, above piceous, underneath rufo-picepus. Head uneven, 

 nearly orbicular ; anteriorly rufo-piceous ; antennae and palpi rufo-piceous ; 

 prothorax transverse, sides rounded with a reflexed margin ; posterior 

 margin wavy, just above which, on each side, is a roundish impression ; 

 posterior angles acuminate : scutellum transverse, subacuminate : elytra 

 scarcely wider than the prothorax, slightly furrowed, furrows punctured 

 with the interstices transversely somewhat wrinkled, and most numerously 

 and minutely punctured ; shoulders short, compressed and incrassated ; 

 cubit curved. 



[An introduced European species that has spread all over Canada and 

 the Northern States, and has become a great pest to millers, flour dealers 

 and house-keepers.] 



Tenebrio Pennsvlvanicus Knock. — Length of body 8-9 lines. 

 Several specimens taken in Lat. 54° ; it was also sent me by Dr. Harris. 



[2 3 5.] Body long, rather widest towards the anus, black, minutely 

 punctured, naked, not glossy. Head somewhat quadrangular, longer than 

 in the preceding species, uneven , prothorax nearly square with a minute 

 impression above the scutellum ; posterior margin wavy ; lateral very 

 slender and a little rounded ; scutellum subtriangular ; elytra with nine 

 rows, including the marginal one, of punctures, and an abbreviated one at 

 the base next the suture ; under a powerful lens the interstices are minutely 

 but not thickly punctured : the shoulders are scarcely thicker than the 

 thighs. 



[Belongs to Nyctobates Guen. ; very abundant throughout Canada.] 



