North American Rhynchophora. 291 



Although rather closely allied to margaritosua, I believe that 

 the present species is distinct, on account of the shorter, more 

 transverse, and more strongly inflated prothorax, with the scales 

 more evenly arranged, and without distinct median vitta, and 

 also because of the denser, paler, and more conspicuous dark 

 setae of the elytra. 



We arrive here at a division of the genus which is charac- 

 terized by the elevated internal margin of the eye. There are 

 other characters which serve to distinguish these species, such as 

 the sparser scales on the head and beak, enabling the punctures to 

 be more distinctly seen, and also the more decided impression 

 at the apex of the beak. The form is generally elongate and 

 slender. This section should probably include procerus, but as 

 the internal margin of the eye is so feebly elevated as to give rise 

 to uncertainty, it is left, for the present, with the preceding 

 division. 



S. proininens n. sp. — Slender, convex; scales small, oval, those on 

 the elytra rather dense, but not at all overlapping, obscurely and finely 

 strigose, those of the head and prothorax very sparse, and a little more 

 distinctly strigose and more cupreous; general color pale brown, slightly 

 variegated with cinereous, especially near the sides; pronotum very 

 feebly and indefinitely trivittate. Head slightly transverse; front and 

 base of beak flat, rather coarsely, deeply, very densely, and irregularly 

 punctate; the punctures large and small intermingled; surface rather 

 sparsely bristling with long fine dark setae and shorter paler ones inter- 

 mingled, almost devoid of scales, except a very few near the eyes and 

 base; eyes large, feebly convex, inner margins very strongly elevated 

 above the front; beak slightly transverse, nearly as long as the head; 

 apex slightly impressed, feebly declivous and finely tricarinate; lateral 

 carinse convergent and rather discal; median groove rather narrow 

 and deep; antennae with first joint of funicle as long as the next two 

 together, second elongate. Prothorax slightly wider than long, cylin- 

 drical, rather broadly and feebly constricted at apical fifth, and very 

 finely so just before the basal margin; intermediate portion of the 

 sides broadly, distinctly, and nearly evenly arcuate; base and apex 

 equal, just visibly arcuate; disk coarsely, deeply, and densely punctate; 

 scales not obscuring the punctures; dark setae very fine and not dense. 

 Scutellum small, extremely densely squamose, whitish. Elytra fully 

 twice as long as wide, nearly one-half wider than the prothorax; sides 

 straight and parallel in basal two-thirds, acutely roundly behind, the 

 sides being very feebly sinuate before attaining the apex; disk convex, 

 feebly striate; striae with small, but distinct and rather approximate 

 punctures; intervals nearly flat, subequal; dark setae abundant, robust, 



