52 Journal New York Entomological Society. [Voi.vni. 



concealed within the deep depression for the eyes in the anterior part 

 of the hypomera. The anterior coxae are separated by a narrow promi- 

 nent lamina. Hind tarsi slender, the first two joints short. 



This genus was investigated by the writer some time since under 

 the name Limnocharis Horn, (Bull. Cal. Acad. Sci.). The male has 

 the sixth ventral more elongate, sometimes as long as the two preced- 

 ing combined or even longer, the seventh transversely impressed at 

 base and the elytral apices transversely rounded. In the female the 

 sixth ventral is not longer than the preceding, the seventh smaller and 

 simple, and the elytral apices are frequently obliquely pointed at tip. 

 The eighth segment, heretofore noted, is the projecting part of the 

 dorsal pygidium, and does not belong to the venter. In most of the 

 species the male seems to be much less abundant than the female. 



The American species of the genus may be defined as follows from 

 the female throughout : — 



Elytra oval in outline, the sides arcuate 2 



Elytra conical, truncate at tip, the sides straight 7 



2 — Elytral apices in the female obliquely subtruncate ; pubescence rather long 3 



Elytral apices in the female rounded ; last joint of the maxillary palpi fusiform 4 



3 — Piceous to black in color, the sutural angles distinctly rounded ; last joint k >f the 

 maxillary palpi narrowly fusiform, pointed at tip ; pronotum obsoletely but rather 

 coarsely micro-reticulate throughout. California \_politiis Csy.] ...piceus Horn 

 Black, the sutural angles extremely narrowly rounded and more nearly right, the sub- 

 truncate apices slightly less oblique ; last joint of the maxillary palpi cylindric, 

 the lip truncate ; pronotum not micro-recticulate, except very feebly toward the 

 sides; body relatively narrower and more elongate. Texas. ..angustulus Csy. 



4 — Black or piceous-black, the seventh ventral obtusely angulate.. 5 



Castaneous in color, the seventh ventral longer, trapezoidal, its apex broadly arcuato- 



truncate 6 



5 — Pubescence of the upper surface long and well developed ; pronotum strongly 

 micro-reticulate, the sides very feebly arcuate. California (coast regions). 



alutaceus Csy. 



Pubescence extremely short and inconspicuous ; pronotum very obsoletely and more 



coarsely micro-reticulate, the sides more arcuate ; body smaller and more slender. 



California (coast regions) congener Csy. 



6 — Narrowly oval, moderately shining, rather coarsely micro-reticulate, the pubes- 

 cence well developed but very fine ; prothorax strongly transverse, the sides con- 

 vergent and feebly arcuate ; elytra scarcely one-half longer than wide, the apex 

 unusually broadly rounded; under surface piceous-black, the legs pale. Length 



1.2 mm.; width 0.58 mm. Vermont ( Bennington Co. ) discolor, sp. now 



7 — Pale piceo testaceous, the head and pronotum smooth, the elytra micro-reticulate ; 

 pubescence long but sparse ; last two joints of the maxillary palpi stouter, the 

 scutellum smaller than usual ; under surface and legs normal. Texas. 



coniciventrls Csy. 



