HlSTERID.E 241 



head evenly and feebly convex, minutely, rather closely punctulate; 

 an epistomal suture is feebly sinuate and extremely fine though evident; 

 prothorax not quite twice as wide as the median length, the sides very 

 strongly converging from the base, evenly and very feebly arcuate, a 

 little more rounding at apex; a single fine marginal line is alone evident; 

 surface with minute, sparse and very obsolete punctulation, a little more 

 evident near, but not at, the sides; elytra not quite as long as wide, 

 three-fourths longer than the prothorax, strongly and evenly rounded 

 at the sides; striae very fine and feeble, extremely minutely punctulate, 

 gradually still finer internally, the fifth and sutural obsolescent though 

 discoverable, not quite attaining the base; lateral surface between the 

 first discal and the lateral stria broad and perfectly smooth, without 

 trace of striation; propygidium finely, sparsely punctate, the pygidium 

 still more finely, remotely and obsoletely; mesosternal side-piece finely, 

 remotely strigose; metasternum finely and sparsely sculptured; pro- 

 sternal striae parallel, flaring at base, abruptly ending anteriorly at the 

 transverse suture delimiting the finely beaded apical lobe; meso-meta- 

 sternal suture obsolete, the apex transverse and just visibly sinuate. 

 Length 2.7 mm.; width 1.65 mm. Mexico (Rio Balsas, Guerrero), 

 Wickham. 



I do not know any described species with which this can be 

 closely compared. 



Carcinops Mars. 



This is a rather large genus in North America and, though having 

 most of the structural characters of Paromalus, may be distinguished 

 at once by the elytra, which are striate somewhat as in Epierus, 

 and by the distinct scutellum. Gilensis Lee., is very common in 

 southern Arizona; it is elongate-oval, deep black and somewhat 

 depressed; consors is abundant over a wide area from California 

 to Brownsville, Texas, as represented in my collection; it may be 

 known easily by the broadly oval form and equally abbreviated 

 fifth and sutural strise at base; iq-striatus seems to be cosmopolitan 

 and there is a good series at hand from Rhode Island to Florida, 

 Colorado and Lake Co., California; the head in the latter species is 

 remarkable in having a continuous finely beaded margin. The 

 anterior tibiae in Carcinops differ very radically from those of 

 Epierus in being more dilated and with two remote, and a few 

 feebler and more basal, external teeth and a long slender recurved 

 apical spur. The species of Carcinops and Epierus are sometimes 

 so similar to external view, however, that an examination of the 

 hypomera and tibiae becomes necessary in order to determine the 

 T. L. Casey, Mem. Col. VII, Nov. 1916. 



