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



Elytra with a broad subbasal fascia, not quite attaining the side margins, broadly sin- 

 uate medially at its posterior margin and deeply emarginate at each side at base 

 by two triangular pale areas ; body very small, narrowly elliptic 13 



2 — Scutellar spot small and oblong or rhomboidal 3 



Scutellar spot large, transversely suboval or elliptical, the subhumeral always want- 

 ing ; suture never black 8 



3 — Pronotum distinctly margined with yellowish-white along the apical margin ; each 

 elytron with four spots, no one of which is ever altogether wanting, that on the 

 callus and the post-humeral small, the medio-juxtasutural and subapical large ; 

 suture finely black 4 



Pronotum without a pale apical margin toward the middle , 5 



4--Elytral spots well developed, the juxtasutural rounded or oval and subequal to the 

 subapical, the subhumeral and post-humeral sometimes connected by a fine line 

 extending from the outer side of the former to the inner side of the latter, which 

 rarely shows also a tendency to extend forward externally in a fine line ; under 

 surface and legs black, the meso- and met-epimera white. Length 5.5-6.7 mm.; 

 width 4.2-5.0 mm. New York, New Jersey, Virginia, Indiana and Iowa. 



9=notata Host. 



Elytral spots very small and feebly developed, the subhumeral and post-humeral re- 

 duced to small points, the juxtasutural transversely linear and much smaller than 

 the transverse subapical, which is the largest ; coloration as in g-notata, the body 

 smaller. Length 4.7-6.3 mm.; width 3.8-5.0 mm. New Mexico (Fort Win- 

 gate), Arizona (Canon of the Colorado River) and Colorado. 



degener, sp. nov. 



5— Elytral suture not at all darker in color ; body broadly oval, strongly convex, the 

 pronotum black with a subquadrate pale spot at each apical angle, the punctures 

 fine and unusually close-set, giving a feebly alutaceous lustre ; elytra immaculate, 

 except a small black scutellar spot flanked at each side by a paler spot at the 

 basal margin, the punctures fine and rather close-set, becoming quite strong lat- 

 erally ; abdominal plates strongly defined, broadly ogival in form internally. 

 Length 5.8 mm.; width 4.5 mm. Nevada (Reno) nevadica, sp. nov. 



Elytral suture darker in color but extremely finely so, the scutellar spot, when well 

 developed, sharply rhomboidal ; elytral punctures very fine, sparse, the elytra 

 frequently immaculate 6 



Elytral suture broadly black from the rhomboidal scutellar spot to the apex, toward 

 which the vitta is noticeably broader 7 



6 — Base of the prothorax very strongly arcuate, the sides scarcely more than two- 

 thirds as long as the median length, the apical angles very obtuse and broadly 

 rounded, with the pale spot large, transverse, somewhat prolonged and sharply 

 angulate at its inner posterior limit ; elytra with spots nearly as in g-notata, but 

 smaller, the median discal rather more transverse, and the subhumeral frequently 

 wanting. Length 6.4 mm.; width 4.7 mm. Utah prolongaia Cr. 



Base of the prothorax very broadly arcuate, the sides but slightly shorter than the 

 median length ; apical angles more prominent and narrowly rounded, the pale 

 spot small and subquadrate ; elytra generally wholly immaculate, but in rare in- 

 stances when spots are present they are rounded and disposed nearly as in g-no- 



