126 Journal New York Entomological Society. [Vol. vii. 



internal outline ; subapical spot rather large, transversely oval, very close to the 

 limb and about twice as far from the suture; punctures fine and sparse but 

 rather strong ; head and pronotum black throughout in the female. Length 

 2.6 mm.; width 1.8 mm. California (Siskiyou Co. ) dissolllta Cr. 



22 — Apical extremity of the marginal vitta not anteriorly extended ; head and narrow 

 apical and lateral margin of the pronotum pale in the male 23 



Apical extremity of the vitta greatly expanded, truncate along the suture and pro- 

 longed anteriorly for some distance 26 



23 — Posterior of the two internal sinuosities rounded and forming an angle which is 

 more than right, the vitta varying but little in width throughout its length 24 



Posterior internal sinus angulate and right or less in extent, the vitta rather broad and 

 more irregular in width 25 



24 — Marginal vitta wide, deflecting but very narrowly from edge posteriorly. Length 

 2.0-2.7 mm.; width I.4-I.9 mm. Colorado, Texas, Arizona and California 

 [rufomarginata Muls. ] f imbriolata Mehh. 



Marginal vitta narrow, deflecting widely from the edge posteriorly ; body smaller and 

 more narrowly oval. Length 1.8 mm.; width 1.25 mm California (San Diego). 



limbalis, sp. nov. 



25 — Median part of the vitta moderately arcuate internally, the apical part generally 

 not tending to separate as a spot, but in one male the apical part is wholly de- 

 tached as a subapical spot, and, in another male, the median part emits a broad 

 angulate spur extending transversely to inner two-fifths, nearly as in tmiiata ; 

 body more broadly oval than in fimbriolata or taniata, and with a smaller, more 

 rapidly narrowed prothorax. Length 2.0-2.5 mm.; width I.4-I.9 mm. Ari- 

 zona (Grand Canon of the Colorado) — Dr. Prudden cincta Lee. 



Median part of the vitta strongly but evenly rounded internally, the apical part 

 much narrower, departing more from the edge than in cincta and always semi- 

 detached ; body smaller and more narrowly oval than in cincta. Length 1. 9-2.0 

 mm.; width 1. 3 mm. California (Humboldt Co. ) nilpta, sp. nov. 



26 — Larger, evenly elliptical, the marginal vitta reddish, rather broad, only feebly 

 dilated internally at the middle but strongly at its sutural termination, the internal 

 sinuosities rounded ; posterior part deflecting but narrowly from the edge ; punc- 

 tures strong ; head and pronotum black throughout in the female. Length 

 2.6-2.75 mm.; width 1. 8-1. 95 mm. Dakota — Mr.Wickham. 



inflexa, sp. nov. 



27 — Upper surface moderately convex, the elytral punctures more or less fine and 

 sparse 28 



Upper surface depressed, the elytral punctures strong and close-set 3 2 



28 — Subapical spot bright yellow and sharply defined 29 



Subapical spot very small, darker or obscure yellow and with nubilate outline .... 31 



29 — Body elongate-subelliptical, the prothorax more transverse and less narrowed 

 from base to apex, the sides narrowly yellow in the female with rounded inner 

 outline ; subapical spot of the elytra large, triangular and outwardly pointed, its 

 margin parallel and close to the limb. Length 2.9 mm. ; width 1.8 mm. Cali- 

 fornia (locality not indicated) elliptica, sp. nov. 



Var. A — Body equally or even more distinctly elongate-elliptical, the narrow 

 yellow margin at the sides of the pronotum in the female narrower, parallel, 



