202 THB CANADIAN ENTOMOLOGIST, 



Onthophagus, Latr. 

 Three species are known from Canada. They are found in dung, 

 under which they burrow in the same manner as Copris. They are thus 

 distinguished : 

 A. Larger species (.16 to .34 in.). Thorax of $ protuberant anteriorly. 

 Black, not shining ; carina of vertex in male simple, not pro- 

 duced at the extremities .Hecate, Panz. 



Greenish or bronzed ; carina of vertex produced at tlie 

 extremities into horns or acute tubercles in the $ Janus, Panz. 

 A A. Smaller species (.14 to .20 in.). Thorax of male without protu- 

 , berance. 



Black, feebly shining .pennsylvanicus, Har. 



Some of the specimens of O. Janus, in which the head of the males 

 has merely an acute tubercle at the ends of the vertical carina, and in 

 which the colour is a bright bronze or metallic green, have been separated 

 under the name Orpheus, Panz. 



^Egialia, Latr. 



But one species, ^. conferta, Horn, has been recorded from Old 

 Canada. It is a small insect (.14 to .18 in.), piceous-black or brown in 

 colour, oblong-convex, somewhat broader behind. The thorax has a 

 distinct basal marginal line ; the spurs of the hind tibiae are rather short, 

 broadly expanded at tip, with a translucent border. Other species of this 

 genus will no doubt occur later, but the above characters will distinguish 

 it from any heretofore known in North America. 



Pleurophorus, Muls. 

 A single species (P. ventralis, Horn) has been found in Ontario. It 

 is an elongate, parallel, subcylindrical insect, .16 in. in length, piceous 

 black, with reddish brown legs. The first five striae of the elytra reach the 

 apical margin, and it may thus be distinguished from any Aphodiide in 

 the N. A. fauna. I have seen no specimens. 



At/enius, Harold. 

 Small, slender, black insects, somewhat resembling Aphodius, but 

 ordinarily smaller and more elongate. They frequently occur on the 

 banks of streams. The species are very difficult to separate, but may be 

 distinguished as follows, after the table given by Dr. Horn : 

 A. Posterior tibiae with accessory spinule (a prolongation of the 

 apical margin on the under side adjacent to the spurs). 



