HEMIPTERA HETEROPTERA. 159 



PLOTEBES. 



Ploteres, Lair. Serv. Hist. Hem. 409 — Hydrometritse, De Lap.— Ainphi- 

 coriscE, L.-Duf. — Hydrodromici, Burm. 



A. Legs not formed for gliding on water. Ripicola. - 1. Hebrids;. 



B. Four hinder legs formed for gliding on water. 



a. Four posterior legs fiiiform, approximate, very far from 



the fore legs. - - - - -2. Gerridje. 



b. Legs nearly equally far apart; femora somewhat 



stout. ------ 3. Velidje. 



Fam.l. HEBRIDES. 



Hebridae, Serv. Hist. Hem. 293. Fieb. Eur. Hem.— Hebroidea, Flor.— 

 Hebrina and Hebrides, 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 

 — Ncsogseus, De Lap. Ess. Hem. 34. 



1. Hebrus pusillus. 



Lygarus pusillus, Fall. Mon. Cim. 71 ; Hem. Suec. 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. Set v. Hist. Hem. 294. 

 I'lor, llliyn. Liv. i. 374. Fieb. Eur. Hem. 104. Dougl. and Scott, 

 Hem. 266 — Nceogams erythrocephalus, De Lap. Ess. Hem. 34. 



a—f. England. 



2. Hebrus Letzneri. 

 Letzneri, Scholtz, Arb. Ver. 1846, 5. Fieb. Eur. Hem. 104. 

 Silesia. 



3. Hebrus fuscus. 

 fuscus, Costa, Ann. Mus. Zool. Nap. ii. 125. 

 Naples. 



4. Hebrus americanus. 

 American us, Uhler. 

 a—f. Indiana. Presented by F. Walker, Esq. 



5. Hebrbs parvulus. 

 parvulus, Stal, Rio Jan. Hem. 60. 

 Rio Janeiro. 



