88 GEO. H. HORN, M. D. 



4. — Head and thorax yellow, the latter sometimes with piceous basal spot. 



Liiebecki. 



Head and thorax black 5. 



5. — Form oval, elytral spots small and oval ni jTiiiiclon. 



Slightly oblong, spots somewhat transverse quadritseuiatiijii. 



6. Thorax entirely yellow, elytra very narrowly yellow at tip- ■ xaiitlia^pii^. 

 Thorax yellow at sides, elytra with a large yellow spot at apex. 



teriuiiiatuiii. 



reiuoraliii^. 



7. — Thorax smooth, elytra sparsely punctate (lebiliiii. 



The species of this groiij) are from the Athiutic region, except 

 deb'dk from California, but specimens have occurred in Florida which 

 I cannot at present separate from it. 



S. balteatus Lee— Oblong, nearly a half longer than wide, head and thorax 

 reddish, elytra piceous, with a rather broad, slightly oblique yellow band in front 

 of middle, touching the side, but not crossing the suture. Head scarcely visibly 

 punctate. Thorax narrow in front, sides moderately arcuate, surface very sparsely, 

 finely punctate, a fine basal marginal line. Elytra distinctly, not closely punc- 

 tate ; prosterual plate flat, wider in front ; meso- and metasternum reddish, the 

 latter scarcely punctate, mesocoxal line joining the suture nearly at its middle. 

 Abdomen piceous, sparsely punctate, with six distinct segments: metacoxal line 

 joining the first suture. Legs yellow. Length .06 inch. ; 1.5 mm. PI. I, fig. 5. 



This species may be at once known by its oblong form and the 

 band-like marking. 



Dr. LeConte uses the expression "post-coxal arcs entire," but this 

 is an error of observation caused by a smoother oblique space divid- 

 ing the meta-coxal plate, and when in certain lights the arc seems 

 com})lete. 



Haulover and Sand Point, Fla. 



S. toigemineus n. sp. — Oval, the margin very nearly continuous, head yel- 

 low, thorax piceo-testaceous, paler at the sides ; elytra black, with a small yellow 

 spot on each slightly in front of the middle, apex narrowly pale. Head and 

 thorax scarcely visibly punctate, the latter slightly narrowed in front, sides dis- 

 tinctly arcuate, the basal marginal line scarcely visible. Elytra sparsely and in- 

 distinctly punctate ; prosternum punctate, not distinctly margined at the sides ; 

 metasternum at sides almost smooth, the me.socoxal line joining the suture near 

 the middle. Abdomen yellow, sparsely punctate, metacoxal line joining the 

 suture. Legs yellow. Length .05 inch. ; 1.25 mm. PI. I, fig. 3. 



Since the description was written from the unique male in my col- 

 lection I have seen several females in the collection of Hubbard and 

 Schwarz. These have tlie thorax entirely yellow, and in addition 

 there is a large yellow area around the apex which is sometimes 

 joined to the discal spot. The sketch of the female (PI. I, fig. 4j 

 gives on each elytron the variations. 



