84 MEMOIRS ON THE COLEOPTERA 



width 9.5-10.0 mm. Iowa (Keokuk), Missouri (St. Louis), Kansas 



and Oklahoma. Abundant elongatus Lee. 



Form more abbreviated and more convex, smaller in size, similarly deep 

 black and strongly shining, the margins narrower, and, on the elytra, 

 less concave and black tinted with very faint violaceous; head and 

 mandibles relatively smaller; median lobe of the labrum broad but 

 much less rounded, the flanking sinuses much less evident; mandibles 

 finely and only partially strigose; prothorax much shorter, two- 

 thirds wider than long, convex, the grooves similar, the two subbasal 

 impressions deeper and more lineiform; elytra oblong-oval, shorter, 

 two-fifths longer than wide, rather strongly convex, very smooth 

 though with traces of series of minute and widely spaced punctures 

 posteriorly; hind tarsi ( 9 ) evidently shorter than the tibiae. Length 

 24.5 mm.; width 9.3 mm. Arizona. A single female example from 



the Levette collection pimalis n. sp. 



17 Body smaller and still narrower than in elongatus, rather shining, 

 black, with wide and bright violaceous side margins; head relatively 

 large, nearly four-fifths as wide as the prothorax, the mandibles 

 moderate, having a few medial strigae, the middle lobe of the labrum 

 broad, broadly subtruncate, not advanced beyond the sides, the 

 sinuses moderate; impressions strong as usual; prothorax not quite 

 one-half wider than long, the base evidently though not greatly 

 narrower than (he apex, the marginal and basal grooves coarse, entire 

 and attaining the angles, the stria and two subbasal impressions 

 rather deep; elytra oblong-oval, rather more than two-fifths longer 

 than wide, the sides moderately rounded; surface perfectly even but 

 with geminate series of fine and widely spaced but evident punctures, 

 in large part obsolete before the middle; long humeral carina strongly 

 flexed outward at base as usual in this section; hind tarsi (cf) 

 moderately slender, much longer than the tibiae, which have a short 

 brush of very coarse hairs within apically. Length 23.5 mm.; 



width 9.0 mm. Nebraska. A single male angustulus n. sp. 



A Nearly similar but a little less slender and with relatively still 

 larger head, which is otherwise nearly similar throughout; violet 

 margins similarly broad and conspicuous; prothorax nearly 

 similar throughout though a trifle less transverse; elytra similar 

 but a little broader and slightly more convex, smooth, without evi- 

 dent trace of punctuation but having fine and extremely obsolete 

 longitudinal elevated lines, the one forming the prolongation of the 

 long humeral carina very evident though feeble to the apical 

 declivity; hind tarsi (cf 1 ) much longer than the tibiae, the latter 

 with a long brush of close stiff hairs within apically, nearly as in 

 elongatus. Length 25.0 mm.; width 9.4 mm. A single male, 

 without indication of locality, from the Levette collection, prob- 

 ably collected in Colorado evanescens n. subsp. 



Body still narrower and with much more oval, laterally rounded elytra, 

 very moderately convex, the surface of deeper and more glossy 

 black; elytral side margins narrower and black; head well developed 

 though barely three-fourths as wide as the prothorax, the impressions 

 and mandibles as in the preceding but with the labrum decidedly 



