completely infuscate, the markings reaching nearly or quite to the base; all 

 else substantially as in medialis. Some examples are so nearly intermediate be- 

 tween typical forms of these two so-called species that their disposition is little 

 more than a matter of guess work. I have observed in the numerous specimens 

 studied that in lutescens the dark color at the sides of the head in the great 

 majority of specimens becomes suffused across the front so as to leave a 

 more or less isolated pale vertex spot, while in medialis, as a rule, the pale 

 frontal triangle reaches from the clypeal margin to the vertex. Length 3.2 to 

 3.5 mm.; width 1.65 to 1.8 mm. 



Although the figures giving the extremes in length are the same for 

 this species as for medialis, here the average length is nearer the lower 

 limit, while in medialis the reverse is true. 



Le Conte's type of lutescens was from San Francisco. Specimens 

 before me are from Sacramento ; Athlone, Merced Co. ; and Kernville, 

 all in California. 



C. medialis Lee. 



Oval, color varying from albotestaceous to brownish yellow above, black be- 

 neath; head more or less infuscate at sides; prothorax with a small median 

 fuscous spot, rarely entirely lacking, front and rear margins slightly or scarcely 

 infuscate, more rarely broadly so; elytra with broad suffused fuscous markings, 

 which usually fail to attain the base, and are not infrequently so faint as to 

 be only traceable in certain lights. Punctuation moderately close, becoming 

 gradually a little coarser and denser posteriorly on the elytra, the sutural and 

 first discal series of coarser punctures quite irregular and conspicuous, the 

 second (intrahumeral) usually less marked; beneath coarsely punctate. Length 

 3.2 to 3.5 mm.; width 1.75 to 2 mm. 



A common species, ranging from Middle and Southern California 

 to Western Texas. 



The type is from San Diego, Cal. Specimens before me are from 

 San Juan, Orange Co. ; Pomona ; Elsinore Lake ; Santa Margarita ; 

 Santa Cruz ; Vine Hill, Contra Costa Co. ; San Francisco ; Owen's 

 Lake ; California, Williams and Cosnino Canon, Arizona ; Carlin, 

 Nevada; El Paso Texas. 



The tarsi are but little wider in the male than in the female ; the 

 anterior claw of front tarsus (c?) evidently a little thicker and more 

 suddenly bent. 



"Specimens from Arizona and Texas are nearly uniformly pale in 

 color, the elytral markings faint or nearly wanting ; these also seem 

 as a whole slightly more finely punctate, but there are perfect inter- 

 mediates between them and the typical California coast form with 

 heavily clouded elytra. These latter are very near lutescens, and in 

 many cases separation is purely an arbitrary matter. 



C. virgo sp. nov. 



Moderately elongate oval, both sexes shining ; head and thorax brownish, the 

 former with pale vertex spot, the latter with sides paler; elytra luteous, the 



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