106 GEO. H. HORN, M. D. 



convergent in front : nutasternuni at sides very coarsely punctate, the raesocoxal 

 line Joining the lateral suture one-third from the front. Abdomen black, evenly 

 and more tinely punctiite than the metasternum ; metacoxal arc entire, the en- 

 closed area nearly a>s long as the segment ; femora entirely or in great part pice- 

 ous. tibiie and tarsi i)aler. Length .08— .10 inch. ; 2—2.5 mm. 



In the male the last ventral segment is very deeply impresso- 

 emarginate. The legs may be entirely piceous. 



Hub. — North shore of Lake Superior (Lee.) ; westward Utah, 

 Park City, Nev., Washington, California. 



S. tenebrosus Muls. — Broadly oval, entirely black, legs red or reddish 

 brown. Head sparsely punctate. Thorax narrower iu front, sides feebly arcuate, 

 surface equally spai-sely punctate. Elytra slightly more closely and coarsely 

 punctured than the thorax. Body beneath entirely black : prosternal elevated 

 lines entire, slightly convergent ; metasternum at sides coarsely and closely punc- 

 tate, the mesocoxal arc joining the lateral suture very near the front angle. 

 Abdomen more closely, but less coai-sely punctured than the metasternum. meta- 

 coxal arc entire, nearly as long as the tirst segment. Length .08 — .10 inch. ; 2 — 

 2.."» mm. 



In the male the last ventral is feel)ly inipresso-emarginate. The 

 k'lrs varv in color from very i)ale red to brown, but are uniform. 

 In the original description LeConte states that the head of the male 

 is pale. This is only partly true ; the color of the head is by no 

 means indicative of sex. 



Hub. — Massachusetts to North ('arolina. Southern States (Lee). 



S. |)lllictuill Lee. — Broadly oval, black, sliiniug. outline nearly continuous, 

 legs testaceous, the femora more or less i>iceous or even black. Head indistinctly 

 punctate. Thorax narrowed in front, sides feebly arcuate, surface sparsely punc- 

 tate at middle, more densely and coarsely at the sides, the basal marginal line 

 distinct. Elytra sparsely punctate, the pnnct\ires finer than those of the sides of 

 the thorax: prosternum slightly convex and punctate, without elevated lines; 

 metavSternum at sides coarsely punctate, the mesocoxal line arcuate, joining the 

 suture one-fourth from the front. Abdomen rather densely punctate, metacoxal 

 line forming a complete arc scarcely longer than half the tirst segment. T>ength 

 .05— .06 inch. ; 1.25—1.50 mm. 



In the male the fifth ventral .><cgment is slightly emargiiiate, the 

 female has six very distinct segments. The suture between the first 

 two ventral segments is totally obliterated at middle. 



The color of the legs varies ; the tibiie and tarsi are testaceous and 

 the femora |)iceous, but the femora may be almost entirely pale, 

 except at base, or may be entirely black. 



Hub. — The species seems very widely distributed, specimens are 

 known to me from Canada, the ^Middle States, Missouri, New Mexico, 

 British Columbia, and California from Siskiyou to Los Angeles. 



