BYRRHID.E 47 



the triangular depressed opaque and densely pubescent spot of the 

 last segment (cf) relatively broader, at base rather more than a 

 third as wide as the segment, whereas in an a Us it is much less 

 than a third as wide as the segment. Length 1.8-2.2 mm.; width 

 0.95-1.2 mm. Arizona (Riverside), Wickham. 



rugiceps n. subsp. 



B Similar to analis but more parallel and relatively more elongate, 

 the elytral punctures rather smaller, fully as well separated and 

 notably feebler, the coarse decumbent hairs more readily denuded 

 or less persistent; impressed median line of the pronotum much 

 broader and deeper but only extending from the base to slightly 

 beyond the centre; elytra much longer, a third longer than wide; 

 abdomen slightly alutaceous, finely, sparsely punctate, the last 

 segment (d") as in analis. Length 2.2 mm.; width 1.15 mm. 



Colorado (Denver) coloradensis n. subsp. 



Prosternal episterna acute and attenuate anteriorly but more rapidly 

 so and not quite attaining the apex or the lateral fissure at apex; 



sculpture not so strong or dense 4 



4 Form somewhat as in analis but much smaller, more shining and more 

 finely and sparsely punctate, oblong-oval, convex, shining, black, 

 not densely clothed with moderately coarse decumbent and slightly 

 variegated pubescence; prothorax strongly transverse, the converging 

 sides straight, the surface feebly micro-reticulate, strongly at the 

 sides, the punctures small, widely separated, even feebler and sparser 

 laterally, without fine transverse line of opacity, the median line 

 finely impressed in about basal half only; scutellum very minutely, 

 sparsely punctulate; elytra barely more than a fourth longer than 

 wide, obtuse behind, the sides parallel and just visibly arcuate thence 

 to the slightly rounded humeri, the punctures small, feeble, separated 

 by three to four times their widths; abdomen strongly shining, finely 

 but strongly, sparsely punctate, the punctures coarse and close 

 narrowly along the sides and apex, the last segment (c?) with a large 

 central pubescent area, which is strongly, densely punctate but 

 rather indefinitely limited and scarcely at all impressed. Length 

 1. 6-1. 8 mm.; width 0.8-1.0 mm. Abundant in the entire maritime 

 region of California. [Limnichus calif or niciis Lee., Bull. U. S. 



Surv., V, 1879, p. 515] californicus Lee. 



Form more elongate and more evenly, in fact very evenly, oval, much more 

 gradually pointed behind than any of the preceding, black, larger 

 and less shining than californicus, the vestiture nearly similar, not 

 dense, slightly variegated, pale fulvous and cinereous; prothorax very 

 transverse as usual, the strongly converging sides feebly, evenly 

 arcuate, exactly continuing the outline of the elytra, finely but 

 strongly, loosely punctate, rather less sparsely but more feebly 

 laterally, with a feeble transverse line of opacity, the median line 

 finely impressed and striiform, obsolete apically; elytra a third 

 longer than wide, the sides very evenly rounded from base to apex, 

 gradually very little more so behind, the apex much more acutely 

 rounded than usual, widest between basal third and fourth, the 

 punctures small but rather strong, separated by slightly less than 



