HEMLPTEUA HETEROPTERA. 
155 
Black, shining, elliptical. Head elongate-triangular. Eyes not 
prominent. Antennae setaceous, a little more than half the length of the 
body; second joint stout ; third about half the length of the fourth, which 
is a little shorter than the second. Prothorax short, smooth, nearly flat. 
Legs slender; tibiae and tarsi tawny. Wings cinereous, extending rather 
beyond the abdomen. Fore wings white at the base. Length of the body 
i line. 
a. Madeira. From Mr. Wollastou’s collection. 
Genus 6. PIEZOSTETHUS. 
Piezostethus, Fieb. Wien. Ent. Mon. iv. ; Eur. Hem. 139. Dougl. and 
Scott , Hem. 500. 
1. Piezostethus galactinus. 
Anlhocoris galactinus, Fieb. Weit. Beitr. i. 107 — Anthocoris pulchellus, 
Zett. Ins. Lapp. 265 — Xylocoris albipennis, H.-Sch. Wanz. Ins. ix. 
171, pi. 315, f. 971. Bar. Ent. Zrit. Slett. ii. 194. Flor. Rhyn. Liv. 
i. 669 — Piezostethus galactinus, Fieb. Wien. Ent. Mon. iv. 265 ; Eur. 
Hem. 139. Dougl. and Scott, Hem. 500. 
Europe. 
2. Piezostethus formicetorum. 
Anthocoris formicetorum, Boh. K. Vet. Ak. 1844, 158 — Xylocoris formice- 
torum, Bar. Berl. Ent. Zeit. ii. 195— Xylocoris formeticicola, Sahib. 
Geoc. f. 82 — Piezostethus formicetorum, Fieb. Eur. Hem. 139. 
North Europe. 
3. Piezostethus rufipennis. 
Xylocoris rufipennis, L.-Duf. A. S. E.F. ii. 106. Burm. Handb. Ent. ii. 
290. Flor. Rhyn. Liv. i. 668 — Piezostethus rufipennis, Fieb. Eur. 
Hem. 139. Dougl. and Scott , Hem. 501 — Xylocoris bicolor, Scholz, 
Arb. Ver. 1846 — Xylocoris latior, Muls. Ann. Soc. Linn. 1852, 106 — 
Xylocoris obliquus, Costa, Cent. 1852 — Piezostethus bicolor, Fieb. 
Eur. Hem. 139. 
Europe. 
4. Piezostethus maculipennis. 
Xylocoris maculipennis, Bar. Berl. Ent. Zeit. ii. 197 — Piezostethus 
maculipennis, Fieb. Eur. Hem. 140. 
Spain. 
5. Piezostethus Cenomyces. 
Xylocoris Cenomyces, Bar. Berl. Ent. Zeit. ii. 195, 
