150 MEMOIRS ON THE COLEOPTERA 



be little or no doubt of the validity of the latter as described. The 

 asymmetry of the labral notch has seemingly not been noticed 

 before; there is also considerable diversity in the form of this 

 notch. Sexual differences, aside from those affecting the anterior 

 tarsi, are slight. Alternans is remarkable in having the elytral 

 striae almost equally distinct throughout the width, nupera in having 

 most of the striae obsolete, the first and second being the only entire 

 ones and also in having two interstitial foveae instead of the usual 

 one; planulata is strikingly distinct in form and in the very feeble, 

 almost obsolete single interstitial fovea, and the labral notch of 

 such species as expansa and oblonga, with its subparallel sides and 

 narrowly rounded bottom, is also very exceptional. 



Dicaelus Bon. 



In this genus a considerable number of undescribed species have 

 accumulated since the last systematic work was published. In the 

 furvus group, for example, we have the two following: 



Dicaelus carolinensis n. sp. Elongate-oval, moderately convex, rather 

 stout, deep black and opaque throughout; head actually but not relatively 

 large, scarcely more than half as wide as the prothorax, minutely rugulose, 

 the two anterior impressions moderate; antennae but little longer than the 

 head and prothorax, black, gradually attenuated and brown distally; 

 prothorax fully a third wider than long, the sides gradually converging 

 and broadly, almost evenly arcuate from base to apex, the latter deeply 

 and evenly sinuate and about three-fifths as wide as the base, which has 

 the usual form, the median truncate and retracted part one-half the 

 maximum width; surface feebly convex, broadly and strongly reflexed 

 at the sides, with an obliquely, anteriorly arcuate impression at each side, 

 from near the basal angle to two-fifths from the base at inner two-fifths, 

 the two impressions faintly connected transversely by the very feeble 

 subbasal impression, the subapical also very feeble, the median stria 

 distinct; lateral edges even, fine anteriorly, thickened basally: lustre 

 opaque, the sculpture consisting of very fine short dense and generally 

 longitudinal rugulse, arranged in transverse wavy lines, confused laterally 

 and basally; elytra oblong-oval, a little wider than the prothorax, scarcely 

 more than a third longer than wide, parabolically rounded behind from 

 near the middle, the sides very feebly arcuate; striae very deeply impressed, 

 not in the least punctate, the intervals convex and subequal throughout, 

 the humeral carina strong and acute, long, gradually disappearing pos- 

 teriorly. Length 22.5 mm.; width 9.2 mm. North Carolina (Southern 

 Pines), Manee. A single male. 



There is no species known to me with which this can be compared 

 very satisfactorily; it is much larger than furvus, and the sides of 

 the prothorax converge almost evenly from base to apex. 



