BYRRHID.E 15 



Simplocaria Markh. 



Either our species have not been well collected, or the genus 

 Simplocaria is much less developed in America than it is in Europe; 

 I am inclined to the latter assumption. My collection, however, 

 seems to include three species, which may be separated as follows: 



Hind tarsi less elongate, much shorter than the tibiae, very slender, com- 

 pletely non-lobate. Form elongate-elliptic, convex, notably pointed 

 behind, piceous-black, the upper surface with shining bronzy lustre, 

 the under surface black, the abdomen rufo-piceous, the legs pale 

 brownish-testaceous throughout; pubescence above rather sparse, 

 longer and uniform on the pronotum, variegated with silvery patches 

 on the elytra, short, decumbent, uniform and moderately close 

 beneath; head evenly convex, minutely, sparsely punctulate; an- 

 tennae rather slender, almost black throughout; prothorax slightly 

 more than twice as wide as long, the sides strongly converging and 

 feebly arcuate from base to apex, the apical angles only moderately 

 advancing but very acute; surface very finely punctate, more closely 

 toward the middle, rather more sparsely and not at all more coarsely 

 toward the sides; scutellum equilatero-triangular, having radiating 

 hairs which are not very dense; elytra evenly oval, one-half longer 

 than wide, the sides arcuate, continuing the curvature of the thoracic 

 sides, gradually rounding to the conjointly pointed apex, the striae 

 fine but distinct, somewhat impressed, evanescent apically, the sutural 

 deeper posteriorly, the second and third joining the sutural at pos- 

 terior third and fifth; punctures almost invisible, sparse; abdomen 

 rather finely and not deeply, subconfluently punctate, the sutures 

 all distinct and straight, the second segment longer than the third 

 or fourth. Length 3.0 mm.; width 1.65 mm. British Columbia 



(Caraboo District) columbica n. sp. 



Hind tarsi much longer, equaling the hind tibiae in length or very nearly . 2 

 2 Form nearly as in columbica but not quite so pointed behind, black 

 and shining, the upper surface with faint bronzy lustre, the under 

 surface picescent, the abdomen slightly, the legs much, paler; pu- 

 bescence nearly as in the preceding but rather more abundant, that 

 of the pronotum shorter, fine and less distinct; head nearly similar; 

 prothorax notably more developed and not so short, barely twice 

 as wide as long, in form and sculpture nearly as in the preceding; 

 elytra evidently less than one-half longer than wide, evenly and 

 broadly rounded at the sides, continuing those of the prothorax, 

 the apices conjointly moderately acute; punctuation sparse and very 

 minute; striae stronger and more impressed than in columbica and 

 continuing to the tips, the sutural rather deeply impressed through- 

 out, the lateral also distinct in about median third of the length, 

 the second and third joining the sutural near the tip; under surface 

 nearly as in the preceding, the punctuation shallow and still finer, 

 very dense on the abdomen. Length 2.8-3.2 mm.; width 1.45-1.68 

 mm. [Byrrhus tesselatus Lee., Agassiz, Lake Superior, 1850. p. 224,] 



tessellata Lee. 



