Pars 71 Acilius. — Dyfciscus. 241 



1859, p. 507. — Crotch. Trans. Amer. Ent. 



Soc. IV, 1873, p. 402. — Sharp, On Aqua^ 



Carn. Col. 1880—82, p. 676. . 

 Mac C ullo ch i Kirbv, Fn. Bor.-Amer. IV, 



1837, p. 74. 

 2 



IV. Tribus: Dytiscini. 



Sharp. On Aquat. Carn. Col. 1880—82, p. 632, 937. — R^g. Mem. Soc. 



Ent. Belg. IV, 1895, p. 4. — Zimmerm. Arch. f. Naturgesch. 83. 1917 



(1919), A. 12, p. 232. 



Hyderodes Hope. 



Hope, Coleopt. Man. II, 1838, p. 166. — Reg. Ann. Soc. Ent. 



France (5) VIII, 1878, p. 452, 460. — Sharp, On Aquat. Carn. Col. 1880-82. 



p. 633, 903. — Chatanay. Ann. Soc. Ent. France LXXIX, 1910, p. 450.— 



Zimmerm. Arch. f. Naturgesch. 83, 1917 (1919), A. 12, p. 232. 



ooliaris Sharp, I. c. p. 6.34. Australien 



crassus Sharjj, 1. c. p. 633. ,, 



Shnckardl Hope, Coleopt. Man. II, 1838, p. 166, t. 3, Tasmanien, 



f. 5. — Clark, Joum. of Ent. II, 1863, p. 22. — S. Anstra- 



Sharp, I. c. p. 633, t. 16, f. 201 ^, t. 17, f. 202 ? lien, 



var. N. S. Wale.< 

 Morphologie: Reg. Ann. Soc. Ent. France 



(5) VIII, 1878, t. 10. f. 14. 

 S 



Dytiscus L. 



L. Syst. Nat. ed. 10. I, 1758, p. 411; ed. 12, I, 2, 1767, p. 665: Fn. Suec. 

 ed. 2, 1761, p. 214. — F. Syst. Ent. 1775, p. 230; Gen. Ins. 1777, p. 68; 

 Si)ec. Ins. 1, 1781, p. 290; Ent. Syst. I. 1792, p. 187; Syst. Eleuth. I, 

 1801, p. 257. — Rossi, Fn. Etrusca, ed. 2, 1795, p. 229. — Panz. Ent. 

 Cicrm. I, 1794, p. 73. — Cederhjelm, Fn. Ingr. Prodr. 1798, p. 20. -- 

 Payk. Fn. Suec. I, 1798, p. 190. — 111. Käf. Preuß. I, 1798, p. 248. — 

 Clairv. Ent. Helr. II, 1806, p. 201. — Duft. Fn. Austr. I, 1805, p. 24. — 

 C4yll. Fn. Suec. I. 1808, p. 465. — Steph. 111. Brit. Ent. Mandü). Tf, 

 1828, p. 86. — Zett. Fn. Läpp. 1828, p. 206; Ins. Läpp. 1840, p. 127. — 

 Er. Gen. Dytic. 1832, p. 18, 29 (Dyücus); Käf. Mark Brandbg. i, 

 1837, p. 145. — C. R. Sahlb. Ins. Fenn. I, 1834, p. 1.54. — Sturm, DeutKclii. 

 Ins. VIIL 1834, p. 1. — Brülle, Hist. Xat. Ins. (V) II, 1835, p. 22.:. — 

 Boi.sd. et Lacord. Fn. Ent. Paris I, 1835, p. 299. — Aube, Icon. Ccl. \'. 

 1836, p. 51 ; Spec. Col. VI, 1838, p. 102. — Heer. Fn. Helv. 1838, p. 14i'. - 

 Cast. Hist. N'at. Col. 1,^1840, p. 157.— Schiödte, Danm. Eleuth. l, 1841. 

 p. 501. — Redt. Fn. Austr. 1849, p. 14 u. 113: ed. 2, 18.57, p. 98; ed. 3, 

 1874, p. LXVIII, 107. — Fairm. et LabouliL Fn. Ent. Franc. I, 18.54, 

 p. 178. — Lacord. Gen. Col. I, 1854. p. 428. — Jacq. du Val, Gen. Ccl. 

 d'Eur. I, 1857, p. 77. — Gutfl.-Bose, Käf. Deutschi. 18.59, p. 61. — FuJ3, 

 Arch. Siebenb. IV, 3, 1860, p. 85. — Kiesvv. Xat. Ins. Deutschi. I, 2, 

 1868, p. 116. — Seid! Fn. Balt. 1872, p. 61; ed. 2. 1888, p. 20; Verh. Xat. 

 Ver. Brunn XXV, 1887, p. 26; Fn. Transsylv. 1888, p. 20. — Crotch, 

 Trans. Amer. Ent. Soc. IV, 1873, p. 406. — Reg. Feuill. -leunes Nat. VII, 

 1877, p. 113; Ann. Soc. Ent. France (5) VIII, 1878, p. 451. — Sharp, 

 On Aquat. Carn. Col. 1880—82, p. 034, 904. — Bedel, Fn. Col. Bassin 

 Seine 1881, p. 250. — J. Lee. and Hörn, Classif. Col. North Amer. 1883. 

 p. 67. _ Fowler, Col. Brit. Isl. I, 1887, p. 204. — Gangib. Käf. Mittei- 

 le 



