Hydro porus. 



Pars 71 



Nat. Col. I, 1840, p. 165. - Schiödte, Danm. 

 El. 1, 1841, p. 437. - Redt. Fn. Austr. 1849, 

 p. 123; ed. 2, 1857, p. 90; ed. 3, 1874, 1, p. 98. — 

 Bach, Käferfn. Norddeutschi. I, 1851, p. 115. - 

 Fairm. et Laboulb. Fn. Ent. Fran?. I, 1854, 

 p. 207. — Kuhn, Käf. südbayr. Flachl. 1858, 

 p. 133. — Gutfl.-Bose, Käf. Deutschi. 1859, 

 p. 58. — Fuß, Arch. Siebenb. IV, 3, 1860, 

 p. 99. - C. G. Thoms. Vet. Ak. Handl. 1854, 

 p. 199; Skand. Col. II, 1860, p. 22. - Kiesw. 

 Nat. Ins. Deutschl. 1, 2, 1868, p. 61. - Seidl. 

 Fn. Balt. 1872, p. 53; ed. 2, 1887, p. 84; Verh. 

 Nat. Ver. Brunn XXV, 1887, p. 67; Fn. 

 Transsylv. 1888, p. 94. — Sharp, On Aquat. 

 Carn. Col. 1880-82, p. 476. - Bedel, Fn. Col. 

 Bassin Seine I, 1881, p. 239. - Fowler, Col. 

 Brit. Isl. I, 1887, p. 182. - Gangib. Käf. 

 Mitteleur. I, 1892, p. 473. - Kliment, Cesti 

 brouci, 1896, p. 94, t. 7, f. 25. - Everts, Col. 

 Neerl. I, 1898, p. 126. - Stierl. Col. Helv. 1, 

 1900, p. 190. - Lameere, Fn. Belg. II, 1900, 

 p. 817. - Csiki, Mag. Bogarfn. I, 5, 1908, 

 p. 481. - Reitt. Fn. Germ. I, 1908, p. 216, 

 t. 35, f. 15; Süßwasserfn. Deutschl. III— IV, 

 1909, p. 26. - Popp. Col. arkt. Geb. 1910, 

 p. 342. — C. Schauf. in Calwer, Käferb. ed. 6, 

 1913, p. 123, t. 7, f. 13. 



?rufifrons O. Müll. Zool. Dan. Prod. 1776, 

 p. 73 (Dytiscus). 



sericeus Eschsch. M6m. Ac. Petersb. VI, 

 1818, p. 459. 



derelictus Clark, Journ. of Ent. I, 1862, 

 p. 471. 



ruiipes Ol. Ent. III, 1795, nr. 40, p. 30, t. 4, 

 f. 39, a, b (Dyüscm). 



? var. deplanatus Gyll. Ins. Suec. IV, 

 1827, p. 391. - Zett. Ins. Läpp. 1840, p. 138. - 

 Aube, Icon. Col. V, 1836, p. 283, t. 33, f. 3; 

 Spec. Col. VI, 1838, p. 582. - C. G. Thoms. 

 1. c. p. 23. - Kiesw. 1. c. p. 61. - Seidl. 1. c. - 

 Gangib. 1. c. p. 473. — Stierl. 1. c. p. 190. — 

 Csiki, 1. c. p. 481. — Reitter. 1. c. 



Biologie: Meinert, Mem. Ac. Sc. Danem. (6) 

 IX, 1901, p. 366, t. 2, f. 27, 28. 

 Eugeniae Zaitzev, Rev. Russe d'Ent. IX, 1909, p. 63. — 

 J. Sahlb. Medd. Soc. Fn. Fl. Fenn. XXXVI, 

 1909-10, p. 175. 

 ferrugineus Steph. 111. Brit. Ent. Mandib. II, 1828, 

 p. 193. — Kiesw. Nat. Ins. Deutschl. I, 2, 

 1868, p. 59. — Redt. Fn. Austr. ed. 3, 1874, 

 I, p. 97. — Sharp, On Aquat. Carn. Col. 

 1880-82, p. 482. - Fowler, Col. Brit. Isl. I, 

 1887, p. 186. — Seidl. Verh. Nat. Ver. Brunn 

 XXV, 1887, p. 77; Fn. Balt. ed. 2, 1887, p. 87; 

 Fn. Transsylv. 1888, p. 98. — Gangib. Käf. 

 Mitteleur. I, 1892, p. 478. — Kliment, Cesti 

 brouci, 1896, p. 95, t. 7, f. 33. — Everts, Col. 

 Neerl. I, 1898, p. 128. - Stierl. Col. Helv. I, 

 1900, p. 193. - Csiki, Mag. Bogarfn. I, 5, 



Rußland 



Süd- und 

 Mittel- 

 euro])a 



