HARPALIN^; 197 



having two series of setigerous punctures on each elytral interval, 

 the series very close to the striae as a rule. The two principal groups 

 of Dicheirus differ from each other almost subgenerically as follows: 



Body usually but feebly convex, the prothorax much narrowed basally 

 and cordiform; ligula slender, though gradually somewhat broader 

 apically, the paraglossse not very broad, somewhat produced ex- 

 ternally at apex, this apical part generally curving inward; palpi 

 stout, the last two joints of the labial extremely unequal, the third 

 scarcely three-fifths as long as the second, which is unusually 

 elongate; joints 2-4 of the hind tarsi unusually abbreviated; body 



generally brown in color 2 



Body strongly and subcylindrically convex as a rule, the prothorax never 

 more than very feebly narrowed posteriorly; erect hairs of the upper 

 surface always very short; ligula and paraglossae nearly as in the 

 preceding section, the palpi much more slender, the third joint of 

 the labial not very much shorter than the second; joints 2-4 of the 

 hind tarsi not so abbreviated; basal joint of the antennae not quite 



so thick; body generally deep black in color 8 



2 Hind angles of the prothorax obtuse, sometimes distinct, often rather 



rounded 3 



Hind angles sharply marked and subprominent 7 



3 Middle tarsi (of) not dilated or pubescent beneath 4 



Middle tarsi (cf) with joints 2-4 pubescent beneath 6 



4 Species of very large size and more convex form, the sides of the pro- 

 thorax opaque and impunctate beneath; form stout; hind angles of 

 the prothorax obtuse; elytral intervals irregularly biseriately punc- 

 tate; middle and posterior tibiae (cf) coarsely and roughly tuberculate 

 along the outer margin. Length (c?) 15 mm. California (Fort 



Tejon) strenuus Horn 



Species of much smaller size and more depressed upper surface, the 



prothorax punctured beneath, the tibiae spinulose externally 5 



5 Body moderately stout, oblong, feebly convex, coarsely punctured, 

 the punctures bearing long erect setae, dark red-brown in color, the 

 elytra sometimes nearly black; head nearly three-fifths as wide as 

 the prothorax, rather constricted at base, the eyes moderate, promi- 

 nent; surface coarsely, rather closely punctured throughout, the 

 foveae not evident; antennae long, moderately slender, red-brown; 

 prothorax barely a third wider than long, the sides rounded anteriorly, 

 thence strongly converging, becoming straight to the basal angles, 

 which are obtuse and broadly rounded; base transverse, much 

 narrower than the broadly sinuate apex; surface almost even, slightly 

 depressed latero-basally but not otherwise modified, the foveae 

 wanting; side margins very finely reflexed throughout, the disk 

 everywhere coarsely, more or less sparsely and irregularly punctate; 

 elytra not quite one-half longer than wide, parallel, slightly wider 

 than the prothorax, very obtusely rounded at apex, the sinus ob- 

 solete; striae fine, the scutellar rather long, perfectly free; intervals 

 flat, with the punctures of the two series widely and irregularly 



