54 MEMOIRS ON THE COLEOPTERA. 



Differs from crinitula in its longer antenme, with shorter fourth 

 but less transverse ninth and tenth joints, relatively smaller head, 

 with slightly less prominent eyes, more transverse elytra, and in 

 the larger and stouter, more closely punctate and more darkly col- 

 ored body, with shorter and less bristling vestiture. 



I am almost sure that this genus replaces Hommtsa in America 

 and that the latter does not occur here. 



Isoglossa Csy. 



To the single type of this genus, which is apparently confined to 

 the southern Sierra regions of California, and which may be no 

 more than a subgenus of Ocalea, I have to add another species as 

 follows: 



Isoglossa pellax n. sp. Rather stout, feebly fusoid, convex, shining, 

 piceous-brown, the head and entire abdomen black, the legs pale brown; 

 punctures rather fine, well separated, the abdomen with very minute 

 and dense, transversely wavy strigilation and very fine, notably sparse 

 punctures, the punctures nowhere very asperate, slightly so on the elytra; 

 vestiture rather long, palish, not dense, sparse on the abdomen; head 

 well developed, scarcely wider than long, fully two-thirds as wide as the 

 prothorax, parallel and feebly arcuate at the sides, the eyes not prominent, 

 at a little less than their own length from the base; antennae long, heavy, 

 moderately incrassate, black, slightly pale basally, the second joint slightly 

 shorter than first or third, the three much elongated, fourth rather longer 

 than wide, the outer joints less than one-half wider than long, the last 

 gradually acutely pointed, short, not as long as the two preceding; 

 prothorax relatively rather small, scarcely one-half wider than long, sub- 

 parallel, the sides evenly and rather strongly arcuate, the base rounded, 

 the angles obtuse and ill-defined, the surface with a small feeble rounded 

 ante-scutellar impression; elytra large, wider than long, subparallel, 

 with very feebly arcuate sides and slightly exposed humeri, distinctly 

 wider than the prothorax and nearly one-half longer, the apices rather 

 deeply sinuate laterally; abdomen large though evidently narrower than 

 the elytra, parallel, with feebly arcuate sides which are very slightly 

 more converging apically, the margins rather thin, the fifth tergite a third 

 longer than the fourth; basal joint of the hind tarsi not quite so long as 

 the next three, the latter mutually equal. Length 2.8 mm. ; width 0.8 mm. 

 California (Tehachapi Pass), Wickham. 



Differs from arcuata in its darker coloration, less shining and less 

 sparsely punctate and pubescent integuments, darker antennae, 

 with more transverse outer joints, much smaller and more feeble 

 basal impression of the pronotum and less apically tapering ab- 

 domen. 



