140 FAMILY V. — PENTATOMID^E. 



across the whole width of the Continent," but I can find no 

 mention of its occurrence west of Colorado, and Zimmer and 

 Stoner both report it very scarce in the states which they 

 cover. Southwestward it ranges to Oklahoma and Texas. It 

 appears to be everywhere a sub-aquatic species feeding or oc- 

 curring on grasses, sedges and other vegetation growing in or 

 close to water. Bueno and Englehardt (1910, 147) state: "A 

 number were observed July 24 along the swampy margin of a 

 bayou running through a cypress swamp, where they were 

 resting on the leaves of water lilies and other plants, some 

 mating. 



From variolarius, to which it is closely allied, ictericus may be 

 separated by the narrower, more tapering body, longer humeral 

 angles with a smooth line between them, dark spiracles and 

 the presence of black spots on thoracic pleura and absence of 

 black spot on genital plate of male. The width across the 

 humeral angles in ictericus, is distinctly greater than that across 

 the middle of abdomen, whereas in variolarius and bifibulus it is 

 subequal to the abdominal width. 



91 (128). Euschistus bifibulus (Palisot de Beauvois), 1805, 148. 



Broadly oval, subdepressed above, convex beneath. Above dull 

 brownish-yellow, marked with fuscous punctures, these more numerous 

 on head and front half of pronotum, causing these parts to appear darker 

 than those behind them, on the elytra in part aggregated in groups of 

 3 or 4 to form numerous small dark dots ; antenna? and edge of tip of 

 scutellum yellow; connexivum fuscous, each segment with a small median 

 submarginal pale spot; membrane dark brown without fuscous dots; 

 under surface yellow, ventrals with two rows of vague fuscous spots on 

 each side; legs yellow, the middle and hind femora with a few brown 

 dots. Head flat, its apex broadly rounded, cheeks equalling or very 

 slightly exceeding tip of tylus; third joint of antennae nearly one-half 

 longer than second. Pronotum with front portion strongly declivent, its 

 side margins slightly concave, humeri broad, subtriangular, their tips 

 obtuse with a narrow smooth irregular line between them; hind portion 

 short, rather sparsely unevenly punctate. Scutellum and elytra finely, 

 rather evenly punctate throughout, the former with a few small slightly 

 elevated smooth areas. Connexivum narrowly exposed. Genital plate 

 of male broad, convex at middle, concave each side, its hind angles 

 broadly rounded. Length, 10.5 — 12 mm.; width, 7 — 8 mm. 



Ormond, Sanford, LaBelle, Moore Haven, Palmdale, Istok- 

 poga, Chokoloskee, Caxambus, Sarasota and Dunedin, Fla., 

 Nov. 29 — April 15. Recorded from numerous other stations 

 and doubtless occurs throughout the State. About Dunedin it 



