HEMIPTERA HETEROPTEEA. 
161 
Scop. Flor. et Faun, Insects, iii. 51, pi. 25, f. 8 — Gerris vaga- 
bundus, Fabr. Si/st. Rhyn. 262. Wolff, Icon. Cim. 203, pi. 20, 
f. 197. Burm. Handb. Ent. ii. 224 — Ploiaria vagabuuda, Lair. 
Nouv. Did. Hist. Nat, xviii. 133. Brull. Hist. Nat. Ins. ix. 
312. Blanch. Hist. Nat. Ins. iii. 100. Han. pi. 2, f. 1 — Ploearia 
vagabuuda, Serv. Hist. Hem. 396. Fieb. Eur. Hem. 150 — Ploiaria 
vagabuuda, Dougl. and Scott, Hem. 536. 
a — i, England. From Mr. Stephens’ collection. 
2. Ploiaria erratica. 
Gerris erraticus. Fall. Hem. Suec. 164. H.-Sck. Wanz. Ins. ix. 118. 
Burm. 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. 
STAGMIGEADI. 
Fam. 1. HYDROMETRID^. 
IlydrometridiE, Leach, Serv. Hist. Hem. 308 — Limnobatidae, Fieb. Eur. 
Hem. 32 — Limnobatina and Limnobatidae, Dougl. and Scott, Hem. 42 
— Hydrometida, Stal, Hem. Afr. iii. 166. Mayr, Novara Hem, 169. 
Genus 1. HYDROMETRA. 
Hydrometra, Fabr. Latr. St. Farg. et Serv. Schum. Brull. Blanch. 
Serv. Hist. Hem. 398 — Limnobates, Burm. Handb. Ent. ii. 210. 
H.-Sch. Wanz. Ins. ix. 118. Fieb. Eur. Hem. 103. Dougl. and 
Scott, Hem. 575. 
