190 THE CANADIAN ENTOMOLOGIST. 



is replaced by a transverse emarginate ridge in the middle. [Quite com- 

 mon everywhere throughout Canada ; generally found under the droppings 

 of horses or cattle.] 



[126.] 175. Onthophagus scabricollis Kirby. — Length of body 4 

 lines. A single % specimen taken in Canada by Dr. Bigsby. 



This is so like the last insect that I felt at first disposed to consider it 

 as merely a variety. The following differences in their character induce 

 me however to consider them as distinct. Not to mention the difference 

 of size, the female of O. laiebrosus has a distinct notch on each side of the 

 head, of which there is no trace in O. scabricollis, the ridges of the vertex 

 of the latter are more elevated, the prothorax is larger in proportion and 

 much rougher, with larger and more numerous granules, and the four teeth 

 of the cubit, which in the former are long and acute, in the latter are 

 shorter and obtuse. 



176. Trox arenarius Fabr. — Length of body 3 lines. Taken by 

 Capt. Hall in Nova Scotia. 



[127.] Body oblong, black, without any gloss. Head covered with 

 cinereous varioles ; nose a little reflexed, rounded with a slight tendency 

 to be obtusangular ; antennae ferruginous ; prothorax with a wide rather 

 obsolete dorsal channel ; sides with two impressions, one near the anterior 

 angle, and the other basilar in the disk ; base lobed • lateral margin fringed 

 with ferruginous bristles : elytra slightly furrowed, interstices with each a 

 series of elevations crowned with brown bristles, the elevations of the 

 alternate series are minute ; anterior tibiae with three acute teeth, they are 

 also serated at the base. [An European species, not found in Canada.] 



177. Pelidnota punctata Linn. — Taken by Dr. Bigsby in Canada, 

 near Lake St. Clair. [Abundant, and often very injurious to the foliage 

 of the grape-vine throughout the Western peninsula of Ontario ; it does 

 not occur, however, as far east as Toronto. For description and illus- 

 trations, see " First Report on the Noxious Insects of Ontario," Saun- 

 ders's Report, page 106 ; or Harris's " Insects injurious to Vegetation," 

 p. 25 : Fitch, Riley, Packard, etc.] 



[129.] 178. Camptorhina atracapilla Kirby. — Length of body 

 5 }± lines. Taken in Canada by Dr. Bigsby, and in Nova Scotia by Capt. 

 Flail. [Synonymous with Serica vcsperlina Schonh., a species taken com- 

 monly throughout Ontario, and, according to Dr. Le Conte, in the Middle, 

 Southern, Eastern and Western States, as far as Lake Superior. For 

 description vide Say's Ent. Works, ii., p. 143.] 



