92 GEO. H. HORN, M. J). 



4. — Fnnii (h'cideilly t'lliptical, body biMieath l)lack, legs fcrnisiiioiis. .orilHtllS. 

 Form liroadly oval. 



Head and thorax yi'llow, ])osterior elytral sjiot soiiievvliat triaiiKular, abdo- 

 men black coloradeii^is. 



Head and thorax at sides yellow, posterior elytral sjjot very irrciiular, tip 



pale ; abdomen ])iceous aiiistlkiliM. 



Head black, anterior angles of thorax sometimes yellow, posterior elytral 

 .spot trausvei-se, sometimes divided ; abdomen black .. .giittlilatus. 



Of tlie al)(jve s^pecies six are from the Atlantic region and three 

 from California. 



S. ilitrusus n. sji. — Oval, very little longer than wide, margin continuous, 

 moderately convex, ferruginous. Head sparsely punctate. Thorax narrower in 

 front, sides feebly arcuate, disc sparsely indistinc^tly punctate, basal marginal line 

 indistinct. Elytra moderately coai-sely, not closely punctate, smoother near apex ; 

 margins of presternum slightly elevated between the coxae ; metasternum closely 

 punctate at the sides, the mesocoxal arc joining the suture one-third from ai)ex. 

 Abdomen i)unctate at the sides, the metacoxal line parallel with the suture, but 

 not reaching the side margin. licngth .06 — .07 inch. ; 1.5 — 2 mm. nearly. 



The abdomen has six distinct segments. Resembles debi/i.-^, bnt is 

 more evenly oval and more convex. The form of tlie metacoxal 

 line will readily separate the two. 



Hah. — Maryland, North Carolina, Texas, Arkansas, Missonri. 



S. bivuliierii!^ n. s]). — R<'gularly oval, sides of thorax and elytra continu- 

 ous, piceous, head and thorax and a moderately large oval spot slightly post-median 

 on each elytron, yellow. Head and thorax sparsely, finely punctate, a scarcely 

 distinct basal marginal line. Elytra moderately closely punctate; prostemum 

 rather coarsely pniictate, without marginal line; metasternum at sides not closely 

 punctate, mesocoxal line arcuate, joining the lateral suture a short distance from 

 the front. Abdomen reddish, moderately densely punctate, metacoxal line par- 

 allel with the first suture. Legs yellow. Length .0(j inch. : !.."> mm. PI. I, fig. 10. 



The abdomen has six distinct segments. 



Hdb. — Floi'ida, Biscayne and Key West (Schwarz). 



S. biisigHatus n. sp. — Oval, margin slightly interrupted at the base of the 

 thorax, black, moderately shining, each elytron with a transversely oval red s]iot 

 behind the middle. Head very indistinctly punctate. Thorax slightly narrower 

 in front, sides feebly arcuate, surface very sparsely finely punctate, basal mar- 

 ginal line very tine. Elytra coarsel.v not closely punctate ; ])ro,sternal plate 

 broader in front, coareely punctured, slightly margined at the sides; metasternum 

 coarsely punctured at the sides, the mesocoxal line arcuate joining the suture 

 near the front. Abdomen rather sparsely punctate, the metacoxal line distant 

 from the suture and slightly arcuate, not parallel with the suture. Legs reddish. 

 Length .08 inch. : 2 mm. PI. I, fig. 11. 



This species resembles bioculatiix, bnt the reddish elytral spot is 

 larger and less sharply detined. In tlic form of the metacoxal line 



