98 MEMOIRS ON THE COLEOPTERA. 



but little doubt of the distinctness of the former in its slightly 

 larger size, less parallel form, in its more transverse prothorax and 

 longer, narrower and still more finely sculptured abdomen. Con- 

 tinentalis is represented by a considerable series, it is much paler 

 on the whole in coloration than analis. 



Colposura parviceps and angusta Csy., also belong to Amischa, 

 and the two following species are allied to them: 



Amischa devincta n. sp. Unusually stout, subparallel rather convex, 

 slightly alutaceous, the sculpture fine, close, feebly asperulate, the abdomen 

 more shining, with very minute punctures and distinctly imbricate sculpture, 

 evenly piceous-brown in color, the head darker and the abdomen clouded; 

 head nearly as long as wide, gradually wider basally, the eyes rather small and 

 anterior, the carinas wanting; antennae rather slender, moderately short, 

 very feebly incrassate, the basal joint not stout, cylindrical, as long as the 

 second and not thicker, the latter but little longer than the third, the outer 

 joints feebly transverse, the last obtuse, fully as long as the two preceding, the 

 two basal joints pale, the remainder abruptly darker; prothorax moderately 

 transverse, parallel, with evenly and distinctly rounded sides, very much 

 wider than the head and about as wide as the elytra, the basal impression 

 transversely oval ; elytra not very transverse, subparallel, the suture distinctly 

 longer than the prothorax, the outer sinus at the apices evident; abdomen 

 rather broad, a little narrower than the elytra, not much elongated, paral- 

 lel, with the thick margins narrowing apically; tarsi very slender and filiform. 

 Length 1.75 mm.; width 0.48 mm. California. 



Distinct in its very stout form and well developed elytra; it 

 bears but little external resemblance to the eastern and European 

 forms of the genus. 



Amischa colonia n. sp. Moderately stout, convex, larger, black to piceous- 

 black throughout, the legs paler though blackish-piceous, pale apically; sur- 

 face feebly shining, the very fine asperulate punctures dense, the abdomen 

 with closely placed, fine asperate punctures and imbricate sculpture, denser 

 than in devincta and with the lustre duller; head small, triangular, with arcu- 

 ate sides, but little wider than long, the eyes anterior; antennae a little longer, 

 notably slender and scarcely at all incrassate distally, the basal joint not 

 quite so long and but little thicker than the second, the latter much 

 longer than the third, the outer joints compact, slightly transverse, the last 

 a little thicker, rapidly pointed apically and fully as long as the two pre- 

 ceding; prothorax very moderately transverse, much wider than the head, 

 almost as wide as the elytra, distinctly narrower at apex than at base, the 

 arcuate sides converging anteriorly, the impression transversely oval, moder- 

 ately deep; elytra subparallel, with feebly arcuate sides, much longer than 

 the prothorax and very moderately transverse, the outer sinus at the apices 

 distinct; abdomen rather long, narrower than the elytra, parallel, with thick 

 margins; tarsi slender and filiform. Length 1.75-2.2 mm.; width 0.38-0.45 

 mm. California (Fisk's Mill, Sonoma Co.). 



