HEMIPTERA HETEROPTKRA. 151 



Scop. Flor. et Faun. Insects, iii. 51, pi. 25, f. 8 — Gerris vaga- 

 bundus, Fabr. Syst. Rhyn. 2(32. Wolff, Icon. Cim. 203, pi. 20, 

 f. 197. Burnt. Handb. Ent. ii. 224 — Ploiaria vagabuuda, Lair. 

 Nouv. Diet. Hist. Nat. xviii. 13.3. Brull. Hist. Nat. Ins. ix. 

 312. Blanch. Hist. Nat. Ins. iii. 100. Hem. pi. 2, f. 1 — Ploearia 

 vagabuuda, Serv. Hist. Hem. 396. Fieb. Eur. Hem. 150 — Ploiaria 

 vagabunda, Dougl. and Scott, Hem. 53(5. 



a — i. England. From Mr. Stephens' collection. 



2. Ploiaria. erratica. 



Gerris erratieus, Fall. Hem. Suec. 164. H.-Sch. Wanz. Ins. ix. 118. 

 Burnt. Handb. Ent. ii. 224 — Ploiaria erratica, Fieb. Eur. Hem. 149 — 

 Ploiaria erratica, Dougl. and Scott, Hem. 536. 



a — e. England. From Mr. Stephens' collection. 

 /. England. Presented by J. C. Dale, Esq. 



3. Ploiaria pallida. 

 pallida, Mtrz. Ann, Sci. Phys. Soc. Agric. Lyon. vii. 

 Woodlark. 



Genus 14. BACTRODES. 



Bactrodes, Stal, Rio Jan. Hem. 80. 



1. Bactrodes biannulatus. 

 biannulatus, Stal, Rio Jan. Hem. 80. 

 Rio Janeiro. 



Genus 15. MALACOPUS. 

 Malacopus, Stal, Rio Jan. Hem. 80. 



1. Malacopus cellularis. 

 cellularis, Stal, Rio Jan. Hem. 81. 

 Rio Janeiro. 



STAGMIGKADI. 



Fam. 1. HYDROMETRID^E. 



Hydrometridse, Leach, Serv. Hist. Hem. 308 — Limnobatida?, Fieb. Eur. 

 Hem. 32 — Limnobatina and Limnobatidoe, Dougl. and Scott, Hem.A'Z 

 — Hydrometida, Stal, Hem. Afr. iii. 166. Mayr, Novara Hem. 169. 



Genus I. HYDROMETRA. 



Hydrometra, Fabr. Lair. Si. Farg. et Serv. Schum. Brull. Blanch. 

 Serv. Hist. Hem. 308 — Limnobates, Burm. Handb. Ent. ii. 210. 

 H.-Sch. Wanz. Ins. ix. 118. Fieb. Eur. Hem. 103. Dougl. and 

 Scott, Hem. 575. 



