THE CANADIAN ENTOMOLOGIST 17 



Female. — Head and pronotum smaller, basal angles of the latter and humeri 

 less strongly developed. 



Length 4.0 mm.; width 1.75-2.0 mm. 



Type locality, — Truxton Valley, Mohave County, Arizona, June, altitude 

 4,205 feet; J. A. Kusche collector. 



Holotype, male, in my own collection. Allotype, female, and a male 

 para type, in the collection of L. R. Reynolds, to whom I dedicate the species. 



Eudasytes grandicollis, new species. 

 Form large, stout and oblong, about twice as long as wide. Colour black, 

 pronotum shining; legs rufo-ferruginous; antennje piceous, rufous toward the 

 base. Pubescence dense on the elytra, sparse and not hiding the surface on the 

 head and pronotum; cinereous, slightly fulvous with a subsericeous lustre, 

 recumbent and moderately long, sparsely intermixed with erect pale setae, 

 which are more abundant and blackish on the head and pronotum; marginal 

 pronotal fimbriae pale, moderately long and rather close-set, those of the elytra 

 longer, less fimbriform and not as close. Hairs rather dense on the body be- 

 neath. Head moderately large; front not convex, broadly bi-impressed ; 

 punctures sparse and rather small, although somewhat coarse on the vertex. 

 Antennae stout and not extending to the middle of the pronotum, subserrate 

 anteriorly from the fourth joint, where the angles are rounded and somewhat 

 tumid Pronotum large in both sexes, transversely oblong, less than a fourth 

 wider than long; sides parallel, broadly and evenly arcuate, sometimes slightly 

 sinuate or straight just before the basal angles, the latter obtuse and distinct; 

 lateral marginal bead distinctly reflexed; apex broadly and arcuately emarginate, 

 a little narrower than the base and with a distinct reflexed bead; apical angles 

 prominent anteriorly, large, rather broad and narrowly rounded; base broadly 

 and strongly arcuate in middle three-fifths, thence subsinuate to the angles; 

 disk strongly arcuate at the periphery, less so in the broad central area, punctures 

 small and very sparse, surfaces smooth and shining; a distirict submarginal, 

 gutter surrounds the entire disk, rather wide at apex (male) and distinctly 

 widened at the angles, surface somewhat impressed at basal sinuations. Elytra 

 about a third longer than wide; sides parallel, apex rounded laterally but sub- 

 truncate at the suture, angle narrowly rounded, marginal bead rather broad 

 and reflexed, especially behind the humeri, the latter with a distinct umbone; 

 disk moderately convex from side to side, punctures small, rather closely placed, 

 surface somewhat rugose. Marginaf gutter rather broad, especially near the 

 humeri. Epipleura broad, horizontal almost to the extreme apex, impunctate 

 and without pubescence, except toward the base. Margins convergent on the 

 apical curve. Abdomen finely and rather densely punctate. Legs relatively 

 slender. 



Male. — Rather stouter. Pronotum large and heavy. Fifth ventral 

 transversely truncate at apex. 



Female. — Head rather smaller. Pronotum smaller. Fifth ventral broadly 

 but strongly rounded at apex. 



Length 4.0-4.6 mm.; width 1.7-2.2 mm. 



Type locality. — Tonopah, Nevada. 



