Genus PELTCDYTES. 
Regimbart, Ann, Soo. Ent. Fr., (5s.) viii, 1878, p. 450, 477. 
Cnemidotut, Erichaon, Gen. Dytic., 1832, p, 48 ( nee Illfger) ; Leconte it 
Horn,, Class. Col., p. 61. 
sumatrensis, RSgimbart, Notes Leyden Mus., vii, 1885, p. 55. 
Hab. Sumatra. 
AMPHIZOINI : — ( Amphizoides ) Lacordaire, Gen. Col., i, 1854, p. 409. 
Amphizoidte, Horn, Gen. Carab., 1881, p. 92 : Leconte & Horn, Class, 
Cob, 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. 
Genus AMPHIZOA. 
Leconte, Proc. Acad. Phil., vi, (Jan.) 1853, p. 227 : Lacord., Gen. Col., i, p. 409 : 
Matthews, Cist. Ent., 1872, p. 119 : Horn, Bep. Un. St. Geol. Surv., 1872-73, 
p. 717 : Sharp, Dytisc., p. 317, 844, 974 : Leconte & Horn, Class. Col., 
p. 59. 
Dysmathes, Mannerheim, Bull. Mosc., xxvi (3), (July) 1853, p. 264 : Lacord., 
Gen. Col., v, p. 60 : Mun. Cat., p. 1834 : Sal 16, Bull. Soc, Ent. Fr , (5g.) 
iy, 1874, p. ccxxii. 
Davldls, Lucas, Bull. Soc. Ent. Fr., (6s.) ii, 1882, p. clvii. 
Hab. E. Tibet, Moupin. 
HYDRACHNINI 
Pilobiden, Lacordaire, Gen. Col., i, 1854, p. 412. 
Pelobida, Horn, Gen. Carab., 1881, p. 92 : Sharp, Dytisc,, p. 259, 827, 
974. 
Genus HYDRACHNA. 
Fabr., Syst. Eleuth , i, 1801 p. 225 : Latreille, Hist. Nat. Crust. Ins. iii, 1802, 
p. 76 : Mun. Cat., p. 427. 
Ilygriobia, Latreille, Gen. Crust. Ins , i, 1806, p. 233 : Ilyyrobia auct. 
Uyphydms, Latreille, l.c., p. 233. 
Paelobius, Schonherr, Syn. Ins., ii, 1808, p. 27. 
Pelobius , Brulle, Hist. Nat. Ins. Col., ii, p. 204 : Jacq. Duval, Gen. Col. 
Eur., i, p. 70 : Sharp, Dytisc,, p. 259, 827, 974, et auct. 
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 punotured, not pubescent. 
Davldil (Hygrobia), Bedel, Bull. Soc. Ent., Fr,, (6s.) iii, 1883, p. xxiii. 
Hab. China, Kiangsl. 
DYTI8CINI : -Sharp, Dytisc., p. 527, 967 ; id., Biol. Centr. Amer., Col., i (2), p, 3 : 
Leconte & Horn, Class. Col., 1883, p 61. 
Hydrocanthares, Latreille, Hist. Nat. Crust. Ins., iii, 1802, p. 74 ; id. 
Gen. Crust. Ins., i, 1806 p. 228 : BruI16, Hist; Nat. Ins,, Col., ii, 1835, 
p. 182. Dyticida!, Westwood, Class. Ins., i, 1839, p. 95. 
The Dytiscini are aquatic in their habits, and differ from the Carabidie chiefly in 
the absence of the antecoxal pieee of the metasternum, and the natatorial legs. 
