Pentatomide. ' 19 
(2) 3. Corium more or less spotted with white ; 
(5) 4. Black, corium with only a small central spot . BIGUTTATUS. 
(4) 5. Blue black, corlum with a large basal -and 
smaller apical spot : c : F » BICOLOR, 
(1) 6. Entirely black . p 3 F F - MORIO. 
S. bicolor, Linn.—Blue black, shining, giabrous. Head 
with its anterior margin slightly emarginate, the margins 
raised and reflexed, antennz long, black ; pronotum deeply 
punctured, with two irregular smooth elevations before the 
middle, sides slightly rounded, each with a narrow white 
spot extending from the front angle to just beyond the 
middle; scutellum and elytra deeply punctured, the corium 
of the latter with its basal two-fifths white, the white 
colour emarginate in the centre of its claval margin, the 
apex of the corium also is white, membrane whitish ; con- 
nexivum beneath spotted with white, and the apical 
segment in the dg margined with the same colour; legs 
blue black, bases of the tibize externally white. 
L. 6-7 mm. 
By sweeping, Chobham ; Weybridge, Headley Lane, Lee, 
Dulwich, Cardiff, Billups; by sweeping nettles, etc., 
Wymondsley, Herts ; in ivy, Shalford and Gomshall ; under 
Artemisia St. Albans, Butler ; Norfolk, common, Hdwards ; 
Devon not common, Purfitt; Reigate, Linnell; Croydon, 
Leamiogton, Blatch ; Darenth, Champion; Parley Heath, 
Dale ; Oxford. 
S. dubius, Scop.—Purplish-blue, glabrous, shining, 
deeply punctured sides subparallel, margins narrowly white. 
Head punctured, its margins strongly reflexed ; antennz 
blue black, pronotum with its anterior margin deeply con- 
cave, its sides much rounded, and narrowly yellowish white, 
its base nearly straight, disc with a deep transverse impres- 
sion, in front of which is a smooth elevation ; scutellum 
punctured; corium punctured, with its lateral margins 
narrowly yellowish white, its apex sinuate just at the 
seutellar angle, membrane whitish; connexivum spotted 
with white ; underside and legs blue black. 
c 2 
