308 GEO. H. HORN, M. D. 



behind the middle, of pale testaceous color, a vague oblique band less pale 

 than the preceding beginning at the humerus, and numerous small pale spots 

 irregularly scattered. Body beneath moderately densely finely punctured, 

 prosternuni very sparsely punctured. Length .20 inch ; 5 mm. 



This species was placed by Crotch as a synonym of *S'. (jri'sea, but 

 it differs by its more elongate form and the shape of the thorax as 

 indicated in the synoptic table. (PI. Ill, figs. 8 — 9). 



Occurs frou) Canada to Nevada, and is probably one of those 

 northern transcontinental species whose habitat will be found from 

 Maine to Oregon. 



S. nndnlata Say. — Rather broadly oval, piceous, margins paler, elytra 

 maculate, subojjaque, sparsely pubescent. Head not densely punctulate, front 

 semicircularly impressed. Thorax more than twice as wide as long at middle, 

 narrower in front, apex deeply emarginate, base feebly bisinuate, sides moder- 

 ately arcuate, near hind angles slightly narrowed, hind angles not prominent, 

 surface moderately densely punctured at middle,' sparsely at the sides, disc 

 more vaguely impressed than in guttulata, piceous with paler spots. Elytra 

 slightly wi<ler than the base of the thorax, the humeral angles feebly denti- 

 form, surface a little more coarsely punctured than the thorax, the punctures 

 on the margin much finer and sparser; margins pale, disc piceous with a post- 

 median ziczac band and numerous paler spots. Body beneath finely and 

 sparsely punctulate. Length .16 — .20 inch; 4 — 5 mm. 



As already remarked the antennal grooves are nearly parallel but 

 the inner ridge slightly arcuate. The antennal club is less suddenly 

 formed than in guttulata, the basal joint being triangular and not 

 semicircular. The markings of this species are an almost exact re- 

 production of those of *S'. grisea, from which it differs in the form 

 of the thorax, the present being slightly arcuately narrowed at base, 

 the other suddenly obliquely narrowed. 



Occurs from the Middle States to Utah. 



S. Ulkei Lee. — Elongate oval, chestnut brown, opaque. Head densely 

 punctured, front not impressed. Antennae less elongate, third joint not as 

 long as the two following united, club abrupt. Thorax twice as wide as the 

 length at middle, narrowed in front, apex very deeply emarginate, base feebly 

 bisinuate, sides moderately arcuate, hind angles rectangular, not dentiform, 

 margin broadly explanate, not reflexed, disc not foveate, densely punctured, 

 punctures at margin sparser. Elytra as wide at base as the thorax, humeral 

 angles slightly dentiform, margin broad, moderately reflexed, disc moderately 

 convex, with a sutural and fine feeble discal costse which have fine punctures 

 at their summits bearing short hairs, the intervals irregularly transversely 

 coarsely punctured, margin more sparsely and less distinctly punctured. Body 

 beneath densely punctured. Length .24 — .28 inch; 6 — 7 mm. 



In two of the specimens before me the color is uniformly brown, in 

 the third the elytra are indistinctly maculate as in PJienoUa grossa. 



Massachusetts, Delaware, District of Columbia. 



