436 CASEY 



base in basal half, the sides becoming straight and oblique, the 

 apical angles rather prominent and thickened; surface very 

 convex, finely, sparsely punctured, rather coarsely but still not 

 very closely toward the sides ; elytra rather short, distinctly less 

 than one-half longer than wide, strongly arcuate at the sides, the 

 serial punctures very coarse, the remainder of the surface finely 

 and sparsely, confusedly and evidently punctate, obsoletely and 

 very minutely toward tip. Length 7.0 mm. ; width 3.8 mm. 

 (c? and ?). Arizona (locality unrecorded )...terebratulus n. sp. 



Form more elongate, similar otherwise, the head and prothorax of the 

 male much larger than in the female, the former minutely, 

 sparsely punctured, with the usual two to three acute rugae near 

 the carinte; prothorax nearly similar but rather more transverse 

 and more strongly narrowed basally, the sides generally becoming 

 obviously sinuate toward base, the apical angles scarcely thickened 

 and usually not at all prominent, a third to nearly two-fifths wider 

 than long, the punctures almost as in terebratulus but finer 

 throughout; elytra oval, more elongate, fully one-half longer 

 than wide, with the immediate apex more prominently produced, 

 the sides arcuate, the punctures of the series, the latter being 

 similarly evidently impressed, much smaller and less conspicuous, 

 the punctuation of the general surface excessively minute, almost 

 wholly obsolete. Length 6.3-7.1 mm.; width 2.6-2.9 '^^'^' 

 (c? and ?). Arizona (Congress Junction), — F. H. Snow. 



mundulus n. sp. 



1 1 — Body nearly as in tnundiilus throughout, the head almost similar 



but with the punctures rather more distinct ; prothorax nearly as 

 in terebratulus and similarly punctate but rather more transverse, 

 shorter in the female than in the male, the apical angles not 

 thickened and not at all prominent; elytra slightly less than one- 

 half longer than wide, oval, with the apex rather prominently 

 produced, the feebly impressed series composed of deeply im- 

 pressed punctures which are nearly as large and conspicuous as 

 in terebrattihis and much more so than in mundulus, the sparse 

 punctures of the remainder of the surface very minute and only 

 just visible, even toward base, wholly obsolete apically. Length 

 6.0-6.9 mm. ; width 2.6-3.8 mm. (d^ and 9). Arizona (River- 

 side), — H. F. Wickham simplex n. sp. 



12 — Form stout, strongly convex, with very minute sparse hairs, 



deep black as usual ; head finely, sparsely punctured and feebly, 

 longitudinally rugulose, with the usual two or three acute folds 

 near the carinas ; prothorax large, about a third wider than long, 

 the sides rounded, converging only in about basal third, the apical 

 angles thickened and evidently prominent, the punctures as in 

 terebratulus ; elytra short and broadly oval, less than one-half 

 longer than wide, the series but just visibly impressed and com- 

 posed of widely separated, moderately coarse punctures, smaller 

 than in any of the three preceding species, the punctures of the 



