AMERICAN COLEOPTERA. 



E,nr» s„oo,ber, m»e <,i..i..c„. P""';';"; »"';"-. ":":':;„';l',^lt 



Re^io^ submetalliciis* 



Color, submetallic. • • • ' " ' " ' ' " ^ smooth or feebly 



Thorax entirely smooth without any wrinkles , elytia also ^^^^^ 



punctate ; antennae stout. Tulare Lo 



Each of these species is represented by numerous exan.ples i„ dif- 

 ferenTeo lections, except am6i,.™.. of which the type .s .„ he co^ 

 ,on of Mr. Charles Fuchs, of San Francisco, and »6»etaH.« 

 of which the type is in the Horn collection now in the possession of 



etcad,nyf Natural Sciences of Philadelphia. These two speces 

 ivetn a rather inaccessible region in northeast Californ.a wh.ch has 

 n'been recently collected. One other speces, tern, has been .e- 

 Taded as rare, hut recently numerous examples have been fou d 

 some of which differ from the type in being more punctate on the 

 e y a but, as these were associated in nature w th exan.ples wh,ch 

 exactly duplicated the Horn type, they are for the present regarded 



"specimens of .e,«oiar.m in Dr. Van Dyke' s collecti™ demonstrate 

 that H»r»i.-, separated because of its almost quadrate thorax, is only 

 1 variety The form of the thorax is especially variable in this genus, 

 and hLu is simply the extreme form of «.,«<.wr«», in which the 

 thorax is always rather broad. ., , p 



Of the species described by Major Casey four are descnbed from 

 one or two specimens only, and in some instances, I thtnk, he has 

 been misled by the strong individuality so many specm^ens present 



O montanusCasey,Iregardasavarietyof£cWrf.useparated 



by the labrum being more deeply bisinuate, the n-dian lobe more 

 prominent, with its apex transversely truncate This difference is 

 to be observed in many specimens now \Med Edwardsu, ^nd is 

 associated with narrower elytra which are more elongate and more 

 parallel. It occurs in Placer County where Edwardsu also is found, 

 perhaps at a lower elevation. ^ ,.. • 



^ O sculptilis Casey, I regard as a variety of cahformcus separ- 

 ated by the form of the labrum which is nearly truncate, the median 

 lobe V ry feeble and broadly rounded. The sculpture of the thorax 

 is described as being similar to that of ealiformcus. It was taken in 

 the coast region north of San Francisco. 



O elongatus Casey, I regard as a variety of Lecontei separated 

 by the labrum being bisinuate instead of truncate. The type was 



MARCH, 1902. 

 TEANS. AM. ENT. SOC, XXVIII. 



