HARPALIISME 227 



The anterior tarsi of the male are only very feebly swollen and 

 joints 2-4 have beneath a double line of rather large, scale-like 

 plates, one to each joint in each series; the middle tarsi seem to be 

 slender and unmodified. The eyes adjoin the buccal opening and 

 there is no lateral modification of the head beneath. 



The genus Agonidus may be closely allied to Amblystomus Er. ; 

 if so the latter genus is widely out of place in the Munich catalogue, 

 though properly placed by Lacordaire. 



There are a number of exceptions to the system of characters 

 defining the Acupalpini as here considered, such as the punctiform 

 or elongate and not obliquely prolonged frontal fovese of Bradycidus 

 and Tachycelhis, or the complete absence of these foveae in Agonidus; 

 also the trisetose second labio-palpal joint in Dicheirotrichus and 

 Catharellus , but, as the summation of other structural features, as 

 well as the general habitus of the body, places all these genera 

 rather plainly in juxtaposition with normal members of the tribe, 

 these exceptions merely serve to indicate some of the difficulties 

 encountered in the way of rigorous tribal definitions, in a sub- 

 family with so many and perplexing cross affinities and parallelisms 

 in all directions. As previously shown, corresponding inconsistencies 

 occur in almost every tribe of the subfamily. 



Trichocellus Gangl. 



The single European species before me, which is probably placidus 

 Gyll., agrees very well in general characters with our own, but is 

 rather more convex and with more deeply impressed striae, these, 

 in fact, becoming sulciform toward the suture; it is certainly not 

 identical with any of the moderate number of American species 

 represented in my collection, which without much doubt are also 

 distinct among themselves. Cognatus Gyll., agrees much better 

 with our common northern ruficrus than does placidus, but according 

 to Dejean it is smaller in size, his measure being 3.5 mm. in length. 



The body in Trichocelhis is moderately convex, subcuneiform in 

 outline, the elytra being a little broader behind than before the 

 middle, and they generally have minute diffused punctulation. 

 bearing very small erect hairs, either over the entire surface, 

 recalling Dicheirotrichus, or simply near the edges; it is virtually 

 wanting altogether, except at apex and sparsely over the margina ' 



