HARPALIKLE 209 



Anisotarsus Chd. 



Eurytrichus Lee. 



This is one of the most distinctly isolated genera of the tribe, 

 not only in habitus, due to the elongate-oval outline, Calathus-\ike 

 form and thinness of the integuments, but in the structure of the 

 mouth-parts. The mentum is distinctly and angularly toothed, 

 the ligula slender, scarcely enlarged at apex and usually very much 

 shorter than the paraglossae, the lobes of the latter long and evenly 

 but not broadly rounded at tip. The second and third joints of the 

 labial palpi are subequal in length. The terminal spur of the 

 anterior tibiae is slender and simple and the hind tarsi are slender, 

 subglabrous above, with the basal joint about as long as the next 

 two combined and longer than the fifth as a rule. The sterna and 

 abdomen are almost completely impunctate. There is constantly a 

 single discal elytral puncture, which is more posterior in position 

 than usual, but there is no other distinct punctuation, excepting the 

 uninterrupted marginal line of large and small fovese. The species 

 are decidedly numerous, those known at present from our fauna 

 being as follows: 



Body notably large in size. Color deep black throughout, without trace 

 of metallic reflection, the tarsi piceous or paler; lateral edge of the 

 pronotum slightly pale diaphanously ; lustre shining, the elytra just 

 visibly (cf) or strongly (9) alutaceous; head three-fifths as wide 

 as the prothorax, with rather large and prominent eyes, smooth, the 

 foveae minute and sublinear; palpi slender; antennae slender, tes- 

 taceous, the three basal joints partially blackish; prothorax two- 

 fifths wider than long, the sides broadly and almost evenly rounded, 

 a little less arcuate basally; apex moderately sinuate, much narrower 

 than the base, which is transverse medially, broadly and feebly 

 arcuate laterally, the angles obtuse, well defined and only finely 

 blunt at their apices; surface subeven, impunctate throughout, the 

 lateral gutter rather coarse, disappearing near basal third, the foveae 

 very shallow and somewhat vague, opaculate or rugulose but not 

 punctate, the stria short, fine; elytra rather more than one-half 

 longer than wide, fully a fourth wider than the prothorax, parallel, 

 with rounded sides and, as usual, basally unexposed humeri, the 

 apex gradually obtusely ogival, the sinus shallow but evident; striae 

 very fine, the scutellar long; intervals perfectly flat, the discal 

 puncture behind apical fourth. Length (cf 9 ) 11.0-12.7 mm.; 

 width 4.3-5.0 mm. Texas (El Paso) and Arizona. Abundant also 

 throughout northern Mexico. The generic type of Anisotarsus. 



brevicollis Chd. 



Body much smaller, seldom at all over 10 mm. in length 2 



T. L. Casey, Mem. Col. V, Oct. 1914. 



