Punctuation beneath coarse and dense, the epipleurae much more densely and 

 completely punctate than in the allied species. 



Male : front and middle tarsi very little wider than in the female, the claws 

 of the front tarsi slender and similar; front femora flattened and broadly ob- 

 liquely concave distally beneath, middle tibiae sinuate and produced inwardly 

 at apex, hind femora without the usual fine strigosity, coarsely punctate and 

 obliquely rugose distally. 



Female : legs normal, except that the hind femora are not finely strigose. 

 Length 3.65 to 4.1 mm.; width 2 to 2.15 mm. 



California. Type from Pomona. Known to me also from Riverside, 

 Naples, San Diego (Blaisdell) ; Vine Hill, Contra Costa Co. (Blaisdell.) 



The peculiar crural sexual modifications make this one of the most 

 distinct and easily recognized species of the genus when males are at 

 hand. Females may be known from other species occurring in same 

 region by the more obtuse form and densely punctate epipleurae. 



C. collatus sp. nov. 



Moderately elongate oval, color as a rule, rather clear flavotestaccous with the 

 usual infuscations, viz.; the outer antennal joints, sides of the front, small 

 discal spot and basal margin of the prothorax (more or less) and the disk of 

 the elytra; the broad confluent elytral markings distinctly outlined externally, 

 the suture narrowly pale, at least toward the base. Surface shining in both 

 sexes, the punctuation typical in distribution and moderate in density. Be- 

 neath black, polished, with the usual coarse lateral punctuation, which, how- 

 ever, is rather finer and less dense, especially on the coxal plates, than in such 

 species as medialis, suturalis and pedalis. Front and middle tarsi of male mod- 

 erately strongly dilated, the second joint of front tarsi not wider than the 

 first; anterior claw of front tarsus very evidently thickened and more abruptly 

 bent. Length 3.75 to 4.2 mm.; width 1.9 to 2.15 mm. 



The type is a male taken by the writer at Bear Lake, So. California, 

 8-3 1-' 1 6. I have also taken the species at Winslow, Arizona, and have 

 an example from Cosnino Canon, Ariz., collected by Prof. Wickham. 



This species is closely similar in nearly every way to patruelis, but is 

 of somewhat larger average size, with a little less strongly dilated male 

 tarsi, the second joint not wider than the basal one. 



C. patruelis Lee. 



Very similar to collatus, the description for which answers well enough except 

 as follows : Size a little smaller, females of two forms shining and opaque 

 the elytral cloud often more diffuse and ill-defined, though frequently quite as 

 sharply, outlined as in collatus. Front tarsi of male more strongly dilated, the 

 second joint perceptibly wider than the basal one. Length 3.6 to 3.9 mm.; width 

 1.8 to 2 mm. 



Le Conte's type was from "Fort Laramie, Nebraska." Specimens 

 at hand are from Cheyenne, Wyoming (Wickham), and Winnipeg, 

 Stony Mountain, Miami, and Thornhill, Manitoba, all collected by Mr. 



Wallis. 



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