SCUTELLEROIDEA OF IOWA 45 
this form from Massachusetts and Connecticut and I have a 
specimen in my collection from Illinois. 
Tribe SEHIRINI (Stal) 
The members of this tribe are not so highly fossorial as are 
those of the tribe Cydnini as has been indicated by some of the 
characters given in the preceding key. Two genera, each con- 
taining a single species, are found in North America and but a 
single genus and species is found in Iowa. 
Genus SEHIRUS Amyot and Serviile 
18438. Srnirus Amyot and Serville, Hém, 96. 
Oval, somewhat flattened above, head long, the lateral lobes oval curv- 
ing broadly upward, a little longer than tylus but not meeting in front 
thus leaving the head somewhat emarginate; neither spines nor bristles 
on head. Antennae long, slender, pubescent; basal segment shortest, 
stout; fifth segment longest, the fourth and fifth slenderly attached and 
subfusiform. Rostrum slender, reaching to midcoxae; basal segment 
short, entirely enclosed by bucculae; second and third segments longer, 
subequal, fourth segment short, equal to first. Pronotum somewhat flat- 
tened, the margins thickened and recurved, the transverse impressed line 
apparent. Scutellum long, sharply narrowed towards tip, the apex de- 
pressed, rounded, the base convex. Corium with posterior margin sub- 
truncate, slightly sinuate next the interior angle; membrane thicker at 
base than at apex, with four or five nervures two of which are forked at 
the tip. Connexivum thickened at edge, slightly decurved. Ostiolar plate 
elongate, depressed, tapering towards outer end, slightly curved, the con- 
vex side posterior; opening large and at extreme inner end of plate. An- 
terior tibiae a little thickened at tip, the inner side with a broad groove 
bordered by short, nearly prostrate spines, the outer side and tip with 
longer and heavier spines. 
Sehirus cinctus (Palisot de Beauvois) (Puate I, Figure 4, 
Puate II, Ficure 9 and PuaTE V, FicureE 4) 
1805. Pentatoma cincta Pal. Beauv., Ins. Afr. Amer., 114, Hem., Pl. 8, fig. 7. 
1831. Cydnus ligatus Say, Descr. Het. Hem., 10. 
1851. Sehirus albonotatus Dallas, List Hem., I, 127. 
1859. Oydnus ligatus Say, Compl. Writ., I, 322. 
1864. Sehirus cinctus Stal, Hem. Afr., I, 29. 
1876. Canthophorus cinctus Stal, Svensk. Vet. Handl., 14, no. 4, 22. 
1877. Sehirus cinctus Uhler, Bull. U. S. Geol. Geogr. Surv., III, 397. 
1884. Canthophorus cinctus Signoret, Ann. Soc. Ent. France, IV, Ser. 6, 60, PI. 
3, fig. 227. 
1904 Sehirus cinctus Van Duzee, Trans. Am. Ent. Soc., XXX, 26. 
Broadly ovate; shining, piceous-black or blue-black, punctured. Head 
long, emarginate in front, the lateral lobes curved upwards, the lateral 
margins reflexed, without spines or bristles, finely, confluently punctured 
