COLEOPTERA OF BAJA CALIFORNIA. 393 



In pai'adoxHs the thorax is rather coarsely and densely 

 punctured and the prosternum finely carinate; in penin- 

 sular is there is no carina. 



Coral de Piedra, Sierra el Taste. 



Canthon obliquus n. sp. 



Black, semi-opaque, oval narrowed behind as in nigri- 

 cornis, surface not punctate nor granulate. Clypeus 

 notched at middle not forming teeth, the sides oblique, 

 scarcely perceptibly arcuate. Thorax smooth, disc con- 

 vex with an ante-scutellar depression, a median impressed 

 line from middle to base. Elytra arcuately narrowing 

 almost from the humeri, the striee almost entirely obliter- 

 ated, surface very finely granulate-alutaceous. Pygidium 

 flat, alutaceous. Body beneath extremely finely aluta- 

 ceous. Length, .3 2-. 38 inch; 8-9.5 i^im- 



In addition to the above, the following characters may 

 be added that the relationship of the species may be traced 

 in the tabular scheme given by Baron Harold (Berl. Ent. 

 Zeit., 1868, p. 11). Posterior tibige slightly arcuate, with 

 one spur, the femur not punctate nor with marginal 

 line. Anterior tibia; obliquely truncate. Prosternum be- 

 neath without transverse carina and without sub-marmnal 

 tooth. From these characters it would seem to be alhed 

 to tristis, which however has no thoracic depression. 

 Among the Boreal American species it is probably best 

 placed near Icsvis. It differs notably from any of our 

 species in having the sides of the clypeus obhque and not 

 arcuate. The male has the spur of the front tibije 

 broader at tip, truncate and emarginate. 



Occurs at Pescadero and Sierra el Chinche. 



Chnaunanthus Palmeri n. sp. 



Similar in form to discolor, brownish tending to pice- 

 ous, elytra, abdomen and legs yellowish. Head coarsely 



2d Ser., Vol. IV. ( ii6 ) August 3, 1894. 



