Coleopterological Notices, VI. 80t 



globular, the third and fourth equal and more elongate, five to 

 eleven still longer, equal among themselves, cylindrical, pilose, 

 not incrassate, the eleventh a little thicker, cylindro-obconic, with 

 the apex abruptly and obliquely obtuse. Last joint of the max- 

 illary palpi a little more than right-angled, of the labial short, 

 extremely dilated and transverse, the apex concave and pilose. 

 Scutellum rather small, trapezoidal, somewhat tumid, minutely 

 and very densely- punctate. Middle coxte narrowly separated, 

 the posterior more widely, the abdominal process narrowly 

 rounded. Abdomen with the basal segment shorter than the re- 

 mainder, the dividing suture distinct throughout the width. Legs 

 nnmodified, the hind femora but slightly dilated ; basal joint of 

 the tarsi normally elongate. 



This genus, while related to Ganascus, differs greatly in anten- 

 nal structure, in its deeply emarginate eyes — the emargination, 

 however, not being so deep as in the first three genera of the 

 subfamily, — in its narrow and subcylindrical prothorax, and in 

 general habitus. There is but one species, as follows : — 



1. S. ptinoides Schz.— Proe. Am. Phil. Soc, XVII, 1878, p. 371 (Xylo- 

 pliihis) . 



Polished, black, the antennae, palpi and legs pale tlavo-tes- 

 taceous, the intermediate femora slightl}', the posterior deeply, 

 blackish ; interspaces between the punctui'es not at all reticulate ; 

 pubescence rather sparse and inconspicuous, except the coarser, 

 short white hairs, which are distinct on the head, in two narrow 

 uneven pronotal vittae and at the sides toward base, and in a 

 transverse uneven spot at basal fifth of each elytron, and another 

 smaller and subsutural at apical two-fifths, these pubescent areas 

 apparently rufescent. Head densely, coarsely and deeply punc- 

 tate, the eyes separated b}' scarcely two-fifths of their own width ; 

 antennae more than three-fourths as long as the body. Prothorax 

 rather distinctly narrower than the head, slighth' wider than 

 long, parallel and feebly bisinuate at the sides, the apex and base 

 equal ; disk strongl}^ and densely punctate, feebly tumid along 

 the middle toward base. Elytra one-half longer than wide, twice 

 as wide as the prothorax, parallel and broadly arcuate at the 

 sides, becoming straight and parallel in basal fifth ; apex ogival ; 

 humeri rounded, somewhat broadly and subtransversel}^ exposed 

 at base ; disk convex, not distinctly impressed, rather coarsely. 



