1890.} E. T. Atkinson— Catalogue of the Family Dytiscidss. 181 



Genus PELTOtTSTES. 



Kegimbart, Ann, Soc. Ent. Fr. ( (5s.) viil s 1878, p. 450, 477. 



Cnemidotu*, Erichson, Gen. Dytic, 1832, p, 48 (nee Iiliger) : Leconte & 

 Horn,, Class. Col., p 61. 



sumatrensis, Regimbart, Notes Leyden Mus.j vii, 1885, p. 55. 

 Hab. Sumatra. 



4MPHIZOINI ■.—(Amphizoi&es) Lacordaire, Gen. Col., i, 1854, p. 409. 



Amphizoidoe, Horn, Gen. Carab., 1881, p. 92 : Leconte & Horn, Class, 

 Col., 1883, p. 59, 539. 

 The species of this subfamily are of small size, and are found clinging to logs and 

 stones under the surface of streams. 



Geuus AMPHIEOA. 



Leconte, Proc. Acad. Phil., vi, (Jan.) 1853, p. 227 : Lacord., Gen. Col., i, p. 409 : 

 Matthews, Cist. Ent., 1872, p. 119 : Horn, Rep. Un. St. Geol. Surv., 1872-73, 

 p. 717 : Sharp, Dytisc, p. 317, 844, 974 : Leconte & Horn, Class. Col., 

 p, 59. 



Dysmath.es, Mannerheim, Bull. Mosc, xxvi (3), (July) 1853, p. 264 : Lacord., 

 Gen. Col., v, p. 60 : Mun. Cat., p. 1834 : Salle, Bull. Soc. Ent. Fr., (5s.) 

 iv, 1874, p. cexxii. 



Davldis, Lucas, Bull. Soc. Ent. Fr., (6s.) ii, 1882, p. clvii. 

 Hab. E. Tibet, Moupin. 



HYDEACHNINI :_ 



Pelobides, Lacordaire, Gen. Col., i, 1854, p. 412. 



Pelobidce, Horn, Gen. Carab., 1881, p. 92 : Sharp, Dytisc, p. 259, 827, 

 974. 



Geu, ls HYDRACHHA, 



Fabr., Syst. Eleuth , i, 1801 p. 225 : Latreille, Hist. Nat, Crust. Ins. iii, 1802 

 p. 76 : Mun. Cat., p. 427- 



Hijgriobia, Latreille, Gen. Crust. Ins , i, 1806, p. 233 : Hygrobia auct. 



Hyphydms, Latreille, I.e., p. 233. 



Paetobius, Schonherr. Syn. Ins., ii, 1808, p. 27. 



Pelobi.us, Rrulle, Hist. Nat. Ins. Col., ii. p. 204 : Jacq. Duval, Gen, CoL 



Eur.,i, p. 70 : Sharp, Dytisc, p. 259, 827, 974, et aiiQt. 

 There are but three other species of this genus described, one European and two 

 Australian. They are of moderate size, very convex beneath, the surface very 

 densely punctured, not pubescent. 



Davidii {Hygrobia), Bedel, Bull. Soc. Ent., Fr., (6s.) iii, 18S3, p. xxiii. 

 Hab. China, Kiauysi. 



DYTISCINI: Sharp, Dytisc, p. 527. 967 ; id., Biol. Centr. Amer., Col., i (2), p. 3 ■ 

 Leconte & Horn, Class. Col., 1883, p 61. 



Hynrocantharts, Latreille, Hist. N.'it. Crust ,1ns., iii, 1802, p 74 • id^ 

 Gen. Crust. Ins., i, 18015 p. 228 : Brulle, Hist. Nai. Ins., Col., ii, 1S35, 

 p. 182. Dyticidce, Westwood, Class. Ins., i, 1839, p. 95. 

 The Bijtncini are aquatic in their habits, and differ from the Carablice chiefly in 

 the absence of the antecoxal piece of the metasternum, and the natatorial le^s. 



