298 MEMOIRS ON THE COLEOPTERA 



blackish spot which is sometimes obsolete, the elyra each with a 

 broad biabbreviated subsutural blackish vitta, truncate anteriorly 

 at a considerable distance from the base; under surface, excepting the 

 prosternum anteriorly and laterally and the epipleura, blackish- 

 piceous; legs very pale as usual; head more than three-fourths as 

 wide as the prothorax, the eyes very prominent; antennae fuscous, 

 paler basally, rather stout; front above the antennae pallid as usual; 

 prothorax relatively rather small, a third to two-fifths wider than 

 long, widest at two-fifths from the apex, the sides moderately rounded, 

 oblique and straight to subsinuate posteriorly, the basal angles 

 obtuse but not so broadly rounded as usual; surface with the lateral 

 edges more strongly reflexed than usual, especially toward base, 

 having numerous fine and transversely wavy, close-set feeble rugu- 

 lations, the stria fine, somewhat impressed, the anterior impression 

 obsolete, the posterior usually represented by a fine feeble median 

 angulation; latero-basal parts feebly flattened and with numerous 

 moderate punctures, which are generally obsolete medially; elytra 

 rather more than one-half longer than wide and fully two-fifths wider 

 than the prothorax, of the usual form and striation, the scutellar 

 stria only moderately long and the sinus vestigial ; hind tarsi unusually 

 short, the third joint longer than wide. Length (c? 9 ) 4.7-6.3 mm.; 

 width 1.75-2.3 mm. California (San Francisco and northward and 

 Calaveras Co., and Nevada (Reno). ["Dichirus" pallidus Mots.]. 



rugicollis Lee. 



Form and facies as in rugicollis in every way, except that the lustre is still 

 duller and the elytra much shorter and broader; head similar; antennae 

 longer and more slender, blackish, paler basally; prothorax similar 

 throughout, except that the rugulosity is more pronounced laterally 

 and the basal angles are less narrowly rounded, the basal punctures 

 also extend across the middle to some extent; elytra only a third 

 longer than wide, nearly one-half wider than the prothorax, dull in 

 lustre, the striae more- deeply impressed than in rugicollis and the 

 scutellar stria longer, being as long as half the basal thoracic width; 

 hind tarsi longer and more slender. Length (d 71 ) 5.8 mm.; width 

 2.4 mm. Utah. The single type seems to be a male, judging by 

 the conformation of the abdominal apex, but I can discover no 

 squamse on the anterior tarsi latipennis n. sp. 



Infuscatus is so aberrant in the parallel, evenly rounded form of 

 the prothorax and complete absence of the usual discal puncture of 

 the elytra, form of the elytral striae, deeper thoracic foveae and 

 scheme of coloration, that it might almost be considered generically 

 different from the other species of the genus, but there is something 

 about the general habitus which seems to show conclusively that 

 its proper place is with Agonoderus. The characters of maculatus 

 are taken from the original description; it seems to resemble 

 binotatus, especially in the coloration of the head, but is much 



