72 Journal New York Entomological Society. [Vol. viii. 



ceding species, the elytra indistinctly paler at or near the base subexternally ; 

 pubescence distinct and rather dense, the punctures minute. Length 1.3 mm.; 

 width 0.8 mm. California amabilis Lee. 



The pale band very conspicuous, not at all interrupted at the suture ; pubescence 

 coarser and not so dense 8 



8 — Piceous-black, the pronotum pale, clouded with blackish at the middle anteriorly; 

 elytra each with a pale spot at the humeral callus, the punctures distinct, together 

 much longer than wide. Length 1,4-1.7 mm.; width 0.85-1.0 mm. District 

 of Columbia fasciata Say 



Black, the pronotum as in fasciata, the elytra but little longer than wide, the trans- 

 verse pale band still wider and more conspicuous, wholly devoid of a subbasal 

 pale spot, the punctures more minute and rather sparser ; body shorter and stouter. 

 Length 1.5 mm.; width 1.0 mm. Texas (Columbus) decora, sp. nov. 



The Sacium balteatum, of Matthews, described from North Carolina, 

 I have not seen ; it has on the elytra a straight transverse fascia behind 

 the middle not extending to the sides, and also the apices, yellow. 

 Lepida was placed in ArthroUps by Mr. Matthews but incorrectly. 



Arthrolips Erichs. 

 This genus resembles the last in the outward habitus of the species, 

 but these are in general much more minute and more narrowly oval or 

 oblong-oval and perhaps a little more convex. In the structure of the 

 anterior parts of the presternum and of the antennae it is radically dif- 

 ferent. The species are nearly as numerous as those of Molamba, and 

 are equally widely disseminated over the more southern parts of the 

 United States ; as far as known to me they may be distinguished by 

 the following characters : — 



Elytra dark in color, with paler maculation behind the middle 2 



Elytra unicolorous 6 



2 — Elytra each with an isolated spot which does not attain the suture ; larger 



species 3 



Elytra with a broad band crossing the suture ; size very minute 5 



3 — The spot behind the middle large, oblique and more or less rounded ; body piceous, 

 the pronotum paler, becoming broadly diaphanous at apex as usual, the median 

 line remaining dusky ; elytra finely, very closely punctate, distinctly pubescent, 

 without basal or subbasal pale marking; legs pale. Length 1. 2-1. 35 mm.; 



width 0.78-0.82 mm. Southern California nimius, sp. nov. 



Var. A — Similar but stouter and more rounded at the sides, the spot less 

 rounded and obliquely elliptical ; elytra more rapidly rotundato-convergent 

 behind and narrower at tip. Length 1.4 mm.; width 0.9 mm. California 



(Owens Valley) robustulus, v. nov. 



The spot transverse and crescentiform, being broadly sinuate anteriorly 4 



4 — Elytra black, minutely and not so closely punctate, the limb not paler and without 

 a humeral pale area ; pronotum not paler, except at the apical limb and very 



