284 MEMOIRS ON THE COLEOPTERA 



Cal., not differing from the eastern examples in the minutest par- 

 ticular. It seems to be as widely diffused a species as Harpalus 

 caliginosus. 



It will be noted that the groups suggested by LeConte, depending 

 upon the relative degree of dilatation of the middle male tarsi, are 

 not adopted in the above arrangement. I find that species other- 

 wise closely resembling each other, may have the anterior and 

 middle tarsi of the male subsimilarly or very differently dilated, 

 and that neighboring species have somewhat intermediate stages 

 of dilatation of the middle tarsi. Besides necessitating the presence 

 of the male, which is unsatisfactory for purposes of identification, 

 I do not think such grouping is quite natural, for the reasons stated. 

 The geographic classification is fully as natural at least and is 

 manifestly more convenient. 



Agonoleptus n. gen. 



In this genus the body is subparallel, rather depressed and with 

 pallid coloration, the head moderate in size, with prominent eyes, 

 fine oblique fovese not attaining the eyes, rather short, thick man- 

 dibles, finely and acutely hooked at apex and long very slender 

 antennae. The hind angles of the prothorax are rounded, the 

 scutellar stria notably short, the lateral line of foveae moderately 

 interrupted medially and the striae and intervals but little modified 

 at the elytral apex; there is a single posterior discal puncture. The 

 hind tarsi are slender and filiform but, though of nearly the same 

 relative structure as in Stenolophus, are decidedly shorter. The 

 emargination of the mentum is narrowly parabolic or almost tri- 

 angular, with rounded angle and the margins of the notch are 

 double throughout; there seem to be no setae on the mentum, but 

 there is one at each end of the pedestal or gular support of the 

 mentum. The labial palpi are slender, the second joint a little 

 shorter than the third, with three setae as in Stenolophus, the third 

 joint rapidly and finely subulate at apex. The ligula is rather 

 short and narrow, moderately increasing in width apically, the 

 paraglossae small, diverging and acute at tip. The inner lobe of 

 the maxilla is broadly and strongly falcate at tip, the inner fringe 

 composed of long and rather slender sparse hairs, the last joint of 

 the outer lobe not longer than the second labio-palpal joint, swollen 



