152 CATALOGUE OF 
Europe. 
1. HyDROMETRA STAGNORUM. 
—,, Deg. Ins. iii. 322, pl. 15, f. 24, 25. Geoff. Ins. i. 463—Cimex 
stagnorum, Linn. Syst. Nat. i. 2,732; Faun. Suec.971. Tign. Hist. 
Nat. Ins. iv. 284—Gerris stagnorum, Fabr. Ent. Syst. iv. 188. Fall. 
Mon. Cim, 111 — Hydrometra stagnorum, Fabr. Syst. Rhyn. 258. 
Latr. Gen. iii. 1381. St. Farg. et Serv. Enc. x. 265, pl. 374, f. 21. 
Schum. Plot, 14, pl. 1, f.1—6. Brull. Hist. Nat. Ins. ix.304. Blanch. 
Hist. Nat. Ins. iii.98. Serv. Hist. Hem. 400. Curt. Brit. Ent. i. 32. 
Schum. Beitr. ii. 14, pl. 1, f. 1—6— Limnobates stagnorum, Burm. 
Handb, Ent. ii.211. Ramb. Faun. And. ii. 186. H.-Sch. Wanz. Ins. 
ix. 119, pl. 304, f.938, 939. Feb. Eur. Hem. 103. Dougl. and Scott, 
Hem. 576—Emesa stagnorum, Fall. Hem. Suec, 162. 
a—l, England. 
m,n. France. 
North America. 
2. HypRoMETRA FRANCISCANA. 
Gerris Franciscana, Stal, Hug. Resa, 265. 
California. 
3. HypROMETRA ORBA. 
Gerris orba, Stal, Eug. Resa, 264. 
California. 
West Indies, 
4. HyproMETRA CaRAIBA. 
Caraiba, Guér. Sagra, Hist. Cuba, Ins, 413. 
Cuba. 
Africa. 
5. HyDROMETRA AMBULATOR. 
, ambulator, Stal, Ofv. K. V. Ak. Forh, xii. 45; Hem. Afr. iii. 166. 
Natal. 
Asia. 
6. HyDROMETRA PARVULA. 
Gerris parvula, Stal, Hug. Resa, 265. 
China. 
7. HypDROMETRA JAPONICA. 
Japonica, Motsch. Bull, Soc. Nat. Mosc. xxxix. 1, 188. 
Japan. 
8. HyDROMETRA INSULARIS. 
insularis, Motsch. Bull. Soc. Nat. Mose. xxxix. 1, 188. 
Japan. 
