North American Rhynchopliora, 287 



and broadly, very feebly impressed. Elytra four-fifths longer than wide, 

 gradually, acutely rounded behind from the middle, about three-fourths 

 wider than the prothorax, deeply, roundly emarginate at base; sides 

 straight and parallel near the base; disk convex, finely, feebly striate; 

 striae with small occult punctures; intervals slightly unequal, feebly 

 convex; dark setae very short, robust, squamiform and sparse; white 

 setae very sparse, short, robust, and not distinct. Abdomen convex 

 toward base, densely squamose and with very short fine setae. Length 

 5.0-6.0 mm. 



Nevada (Washoe Co. 4). 



One of the most distinct species of the genus in size, markings, 

 and nature of the vestiture. The description is taken from the 

 male; the female is slightly more robust and has the elytra rel- 

 atively slightly broader and shorter. 



S. montanus n. sp. — Form rather robust, convex; scales brown, 

 scarcely perceptibly variegated in tint, oval, slightly longer than wide, 

 dense and overlapping, the prothorax broadly and strongly trivittate 

 with whitish scales; abdomen densely squamose and very sparsely setose, 

 the scales elongate and acicular. Head short, robust, transverse; front 

 flat, broadly impressed near each eye; surface squamose, densely punc- 

 tate, and with short robust setae; beak slightly shorter than the head, 

 distinctly transverse, broadly, feebly impressed, the sides being slightly 

 declivous toward the median groove, which is deep, narrow and distinct, 

 foveate on the front; eyes moderate, slightly convex; antennae short; 

 first joint of funicle robust, distinctly longer than the next two together, 

 second longer than the third. Prothorax slightly wider than long; sides 

 rather strongly arcuate, finely constricted at apical sixth and very dis- 

 tinctly so at basal tenth; apex very slightly narrower than the base, 

 both subtruncate; disk convex; median vitta broadly, feebly impressed, 

 dark areas densely clothed with short, piceous, robust squamiform setae. 

 Elytra three-fourths longer than wide, gradually narrowed behind from 

 near the middle, acutely rounded at apex, deeply emarginate at base; 

 sides parallel and nearly straight toward base; disk convex; striae fine, 

 distinctly impressed; punctures very fine and occult, close; intervals 

 convex, alternately slightly more strongly so toward base; dark setas 

 erect, robust, short and squamiform, abundant; the pale setae but slightly 

 longer, robust, squamiform and very sparse. Abdomen convex; second 

 ventral segment in the middle as long as the next two together. Length 

 5.3-5.7 mm. 



California (Placer Co. 2). 



Related to the preceding, bat differs in its shorter, more ro- 

 bust form, darker colors, and much denser dark setae of the 

 elytra. 



