146 Coleopterological Notices. 



Scutellum distinct, much longer than wide. Elytral punctures generally 



distinct, always well separated I 



Head coarsely, very densely punctate, without trace of longitudinal rugu- 

 lation : basal joint of antennae in great part exposed in the large deep 

 emarginations at the extremities of the epistomal suture. Prosternum 

 grooved ; hypomera very deeply impressed near the inner obtuse angles ; 

 inner polished bead well developed ; crural margin acute and cariniform ; 

 acute outer edge very gradually, feebly sinuate toward the apex. Scutel- 

 lum moderate, slightly longer than wide. Elytral punctures generally 



coarse and densely placed, cribrate H 



Head finely, feebly punctate, finely granulose ; basal joint of antennae in 

 great part exposed, the emarginations large. Prosternum not grooved; 

 hypomera fiat, not impressed, without trace of an inner polished bead, 

 the crural margin rounded, not distinctly and abruptly defined by an 

 acute edge, the acute outer edge deflexed at apex. Scutellum large, equi- 

 latero-triangular. Elytral punctures very minute, entirely filled by the 



hairs. Antennse unusually long and slender Ill 



Pubescence dual, consisting of very small short confusedly matted and densely- 

 placed hairs near the surface, with fine long erect and much more sparsely- 

 placed hairs interspersed. Scutellum very small, equilatero-triangular, or 

 very nearly so. Prosternum grooved. Crural edge of hypomera acute and 

 cariniform IV 



The minute reticulation or granulation, especially visible at the 

 sides of the pronotum and on the hypomera and abdomen of 

 groups I, III, and lY, is totally obsolete in group II, and consti- 

 tutes an important differential character of this section of the genus. 



As a generic character, it should be stated that the epipleur^e are, 

 near the apex, deeply grooved; this is more evident in the first three 

 groups, and becomes very feeble or nearly obsolete in group lY. 



The species may be distinguished as follows ; — 



Group I. 

 EuLiMNicHus n. subgen. 

 Pronotum finely reticulate or granulose and more or less alutaceous at the sides. 

 Elytral punctures rather coarse, deep and very distinct, separated by from 

 once to twice their own diameters. 



Prosternal episterna almost attaining the apex aiialis 



Prosternal episterna shorter. 



Abdomen very minutely, sparsely and feebly punctate, not appreciably 

 more coarsely so near the sides ; median groove of pronotum fine but 

 distinct, rather long and terminating at equal distances from base 



and apex OIlSClll'US 



Abdomen sparsely but more coarsely punctate, very coarsely and deeply 

 so near the sides ; pronotal groove very short and nearer the base 



californiciis 



