94 «EO. A. HORN, M. D. 



S. oriiatus Leo.— Elliptical, black, dull, each elytron witli two obliquely 

 oval aud moderately large orange-yellow spots, legs reddish, femora often darker. 

 Head rather sparsely and finely punctured. Tliorax narrowed in front, sides 

 feebly arcuate, surface finely, sparsely and equally punctulate, a fine basal mar- 

 ginal line. Elytra more coarsely punctate than the thorax ; metasternum coarsely 

 punctured at the sides, the mesocoxal line joining the suture one-third from the 

 coxa. Abdomen coarsely not closely punctate, metacoxal line not touching the 

 first ventral suture aud turned slightly forward at its outer end. Length .08— .09 

 inch. ; 2 mm. more and less. PI. I, fig. 12. 



The elyti-al .spots are not very strongly defined. The anterior is 

 oval and oljliqne, the posterior more transverse, the two spots may 

 touch. 



The abdomen in the only specimen before me, a female, is com- 

 posed of six distinct segments, the first suture distinct in its entire 

 extent. 



Hal). — Lake Superior region and Massachusetts. 



S. COlora«lensis u. sp.— (3val, thorax slightly coarctate at base, head and 

 thorax yellow, the latter darker at middle of base, elytra piceous, on each a 

 slightly oblique rhomboidal spot one-third from base, a triangular spot emargiuate 

 in front, one-third from apex. Head very sparsely punctate. Thorax scarcely 

 narrowed in front, sides feebly arcuate, surface sparsely punctate, a fine basal 

 marginal line. Elytra much more distinctly punctate, but not clftsely ; prosternal 

 plate rather broad, flat, coarsely punctured ; metasternum coarsely punctured at 

 the sides, the mesocoxal line arched joining the suture one-third from the apex. 

 Abdomen piceous, not closely punctate, metacoxal line not joining the suture, 

 but parallel with it. Legs yellow. Length .06 inch. ; 1.5 mm. PI. I, fig. 2. 



I have seen but one specimen of this species. The elytral mark- 

 ings resemble some of the varieties of guttulatus, but the present 

 species has a yellow head and thorax. There are six distinct ventral 

 segments. 



Hdh. — GarVdnd, Col. (Schwarz). 



S. amabilis Le(;. — Oval, not very convex, i)iceous, or almost black ; head, 

 sides and apex of thorax yellow, elytra with an anterior, oblique, irregular fascia, 

 composed of two spots united by a narrow isthmus, apex yellow, curving inward 

 one-third from apex forming a lunule, inside of which is an irregular spot. Head 

 almost smooth. Thorax scarcely narrower in front, sides feebly arcuate, surface 

 finely sparsely punctate, a fine basal marginal line Elytra moderately coarsely, 

 not closely jinnctate ; prosternal plate parallel, margined at the sides, ininctate at 

 middle; metasternum closely punctate at the sides, mesocoxal line joining the 

 suture nearly at middle. Abdomen piceous, paler at sides and apex, composed 

 of six segments, the terminal not prominent ; metacoxal plate shorter than the 

 segment, the line curved slightly forward at its outer end. Legs yellow. Length 

 .06— .08 inch. ; 1.5—2 mm. PI. I, fig. 8. 



The markings of the elytra are not greatly variable, although at 

 times broadened ; they, however, preserve the type above descril)ed. 

 Hal). — Louisiana. 



