502 Coleopterological Notices, V. 



The eastern species form a difficult study, and several specimens 

 in my cabinet seem to indicate varieties or closely allied species, 

 which it is impossible to define at present. 



S. ocularis n. sp. — Elongate, somewhat convex, polished, subimpunctate 

 and rather pale rufo-ferruo;inous throughout : pubescence coarse, sparse and 

 recumbent but not squamiform. Head as long as the width across the eyes, 

 the latter very large and extremely coarsely faceted ; fovese separated by one- 

 third the total width ; frontal tubercle narrow, scarcely wider than the eye ; 

 antennae long, slender, cylindrical, fully two-thirds as long as the body, the 

 eleventh joint scarcely perceptibly stouter, as long as the three preceding, the 

 latter mutually subequal and a little shorter than the seventh. Protliorax 

 just visibly wider than the head, two-fifths wider than long, the sides sub- 

 parallel in basal half, feebly convergent thence to the apex ; apex and base 

 truncate, the former three-fourths as wide as the latter ; three elongate fovese 

 occupying basal half densely pubescent. Elytra scarcely as long as wide, 

 twice as long and twice as wide as the protliorax ; humeri distinct, elevated, 

 rounded ; humeral width three-fourths of the subaj)ical ; discal impression 

 broad, glabrous, very deep toward base, gradually evanescent toward apex. 

 Abdomen as long and about as wide as the elytra ; border very strong ; first 

 four dorsals equal in length. Length 2.2 mm. ; width 0.8 mm. 



Arizona. 



Described from the male, which is the only sex known to me. 

 Easily distinguishable from pidvereun by the characters given in 

 the table. 



S. abriiptus n. sp. — Moderately stout, feebly convex, polished, sub- 

 impunctate and dark rufo-testaceous throughout ; pubescence short, coarse 

 sparse and recumbent but scarcely squamiform. Head about as long as the 

 width across the eyes, the frontal tubercle one-third as wide as the latter; 

 fove?e rather small ; nuchal constriction densely pubescent laterally as usual ; 

 antennse long and thick, scarcely at all incrassate toward apex, nearly two- 

 thirds as long as the body, the last joint longer than the preceding three, 

 oblique at tip, eighth much shorter than the seventh or ninth, transverse. 

 Protliorax as wide as the head, one-fourth wider than long ; sides subparallel 

 in more than basal half then feebly convergent to the truncate apex, which is 

 fully three-fourths as wide as the base ; foveas elongate, densely pubescent, 

 small, extending not quite one-third the length from the base. Elytra large, 

 about as long as wide, twice as long as the prothorax and rather more than 

 twice as wide ; sides very oblique from apex to base and scarcely arcuate ; 

 humeri feebly exposed ; humeral width barely two-thirds of the subapical ; 

 disk rather flattened ; discal line narrower, deep toward base. Abdomen not 

 quite as long or wide as the elytra, of the usual structure ; border relatively 

 not quite as wide as in ocularis. Length 2.3 mm. ; width 0.9 mm. 



Arizona. 



This interesting species, which is represented by the male only, 



