46 THE CANADIAN ENTOMOLOGIST. 



seventh stria?, and by the anterior tarsi having the last joint elongated and 

 and dilated in the 9- This last character is of much importance, as we 

 have a division of Ilarpalus having the elytra punctured in three rows ; to 

 you who have this insect named in your collection, the above will enable 

 you to verify it ; to others it is of little importance, as it is one of the more 

 d fficult forms to determine. Bradycrtlus has the mentum strongly toothed, 

 but with the exception of the two first species in the list, they are quite small, 

 less than .2o long. The species of Stenolophus are also small and slender 

 beetles, with the thorax rounded before and behind, which distinguishes them 

 from Ilarpalus. With a common glass you will make but little progress 

 with the two last named genera, for although they i re both quite common, 

 their small size and the excellent paper on Agonoclerus, Stenolophus, and 

 JBradi/ccllus (which is as perfect as the long experience of our greatest 

 Am rican Entomologist can make it), renders it undesirable to treat of them 

 J n this paper. There is a division of the Genus Hoip>ctlus (^Selenophorus) 

 which, as Dr. Le Conte says, should be a separate genus, and which has the 

 paraglossa flat, longer than the ligula, without lateral bristles, and the ligula 

 is narrow, not dilated at the tip. Nearly all of this division are small and 

 oval, having the form of the smaller common Amorce, but have three rows of 

 punctures on each elytron, only two species are commonly found at the north, 

 H. gngatinus and II. iripennis, which resemble in general form the true 

 Harpalus, having the paraglossae rather thick, not longer than the ligula, and 

 furnished at the sides with a few bristles, the ligula is truncate, they are 

 mostly of medium or large size, and are found in the middle of summer ; the 

 mentum tooth is usually wanting, or quite small, except in three or four 

 species, which are quite rare and inhabit the extreme west. The thorax is 

 sub-quadrate (nearly square) the proportions of this part of the insect are 

 quite deceptive, it appearing much longer than it really is, therefore you 

 6hould measure it accurately until your eyes are familiar with this seeming 

 difference. These beetles are rather broad and oval, varying from brown to 

 black, two or three of the species are metallic green, more or less shining. 

 The anterior and middle tarsi of the % are dilated, covered beneath with two 

 rows of squainiform papillae. The posteiior tarsi of the % are like all of those 

 of the 9- Some have the elytra reticulate in both sexes, others in the 9 only. 

 The apex of the elytra of the 9 in some species is prolonged into a short 

 spine called the sutural spine, as it is a prolongation of the suture. 



In my next paper I shall commence the description of the species, having 

 given you here an outline of the genera. 



1. The Watchmakers common jewelling glass, having two lenses of about 

 a half-inch focus, will answer for all but the most minute forms. It cotts 



