HEMtPTERA HETEROPTERA. 
150 ' 
PLOTEEES. 
Ploteres, Za<r. Serv. Hist. Hem. 409 — Hydromelritse, De Lap. — Amphi- 
corisae, L.-Duf. — Hydrodromici, Burin, 
A. Legs not formed for gliding on water. Ripicola. - 1. Hebeida:. 
B. Four hinder legs formed for gliding on water. 
a. Four posterior legs liiiform, approximate, rery far from 
the fore legs. - - - - - i2. GERRiDiE. 
b. Legs nearly equally far apart; femora somewhat 
stout. 3. Velida. 
Fam. 1. HEBRID.E. 
Hebridse, Serv. Hist. Hem. 293. Fieb. Fur. Hem, — Hebroidea, Ftor , — 
Hebrina and Hebridse, Dougl. and Scott, Hem. 25. 
Genus 1. HEBRUS. 
Hebrus, Curt. Ent. Mag. i. 198. Burm. Handb. Ent. ii. 214. Serv. 
Hist. Hem, 294. Fieb. Eur. Hem. 104. Dougl. and Scott, Hem, 263 
— Noeogaeus, De Lap. Ess, Hem. 34. 
1. Hebrus pusillus. 
Lygspus pusillus. Fall. Mon. dm. 71 ; Hem. Svec. 65. Germ, Faun. Eur. 
15, 1 1 — Hebrus pusillus, Curt. Ent. Mag. i. 199. Westw. A. S. E. F. 
iii. 5, pi. 6, f. 6. Burm. Handb. Ent. ii. 214. Serv. Hist. Hem. 294. 
Flor, Rhyn. Liv. i. 374. Fieb. Eur. Hem. 104. Dougl. and Scott, 
Hem. 266 — Noeoga;us erythrocephalus, De Lap, Ess. Hem. 34. 
a—f, England. 
2. Hebrus Letzneei. 
Letzneri, Schollz, Arb. Ver. 1846, 5. Fieb. Eur. Hem. 104. 
Silesia. 
3. Hebrus fuscus. 
fuscus, Costa, Ann. Mus, Zool, Nap. ii. 125. 
Naples. 
4. Hebrus americanus. 
Americanus, Uhler. 
a~f. Indiana. Presented by F. Walker, Esq. 
5. Hebrus parvulus. 
parvulus, Stal, Rio Jan, Hem. 60. 
Rio Janeiro, 
