48 Bidessus. Pars 7 1 



perloratus Sharp, On Aquat. Carn. Col. 1880—82, China 



p. 363. — R6g. Ann. Soc. Ent. France LXVIII, 



1899, p. 221. 

 pietodes Sharp, 1. c. p. 348. Nordamerika 



quadrinotatus Sharp, Biol. Centr.-Amer. Col. I, 2, 1882, Guatemala 



p. 21. 

 quadrisignatus Sharp, 1. c. p. 21. Mexiko 



seminulum R6g. Mem. Soc. Ent. Belg. IV, 1895, p. 63. Congo 

 Severini R6g. Ann. Soc. Ent. Belg. XXXVI, 1892, Indien, 



p. 116; Ann. Soc. Ent. France LXVIII, 1899, Bengalen 



p. 216, f. 13. 

 sordidipennis Reg. Ann. Soc. Ent. France LXXII, Madagaskar 



1903, p. 6. 

 34 



Subg. Pachynectes Reg. 



R6g. Ann. Soc. Ent. France LXXII, 1903, p. 7. — Zimmerm. Arch. 

 f. Naturgesch. 83, 1917 (1919), A. 12, p. 136. 



hygrotoides R6g. M6m. Soc. Ent. Belg. IV, 1895, p. 97. Madagaskar 

 $ var. o r dinatu s R6g. Ann. Soc. Ent. 

 France LXXII, 1903, p. 8. 

 Tentricosus R6g. Ann. Soc. Ent. France LXXII, 1903, „ 



p. 8. 

 2 



Subg. Bidessns i. sp. 



Zimmerm. Arch. f. Naturgesch. 83, 191? (1919), A. 12, p. 137, 



aberrans Clark, Trans. Ent. Soc. London (3) I, 1863, 

 p. 426. - Sharp, On Aquat. Carn. 1880-82, 

 p. 786. — R6g. Ann. Soc. Ent. France LXVIII, 

 1899, p. 230 (Hydroporus). (Gen. dub.) 

 abjectus Sharp, Biol. Centr.-Amer. Col. I, 2, 1882, p. 24. 

 affinls Say, Trans. Amer. Philos. Soc. II, 1825, 

 p. 104. - J. Lee. Proc. Acad. Philad. VII, 

 1855, p. 290, 293; Compl. Writ. of Say II, 1859, 

 p. 517 (Hydroporus). — Sharp, On Aquat. 

 Carn. Col. 1880-82, p. 366; Biol. Centr.- 

 Amer. Col. I, 2, 1882, p. 23. — R6g. Ann. Soc. 

 Ent. France LXIV, 1895, p. 329. — Wickham, 

 Canad. Ent. XXVII, 1895, p. 73. 



nanus Aub6, Spec. Col. VI, 1838, p. 496. 



Charlotti Clark, Ann. Mag. Nat. Hist. (3) 

 X, 1862, p. 182. — Sharp, On Aquat. Carn. 

 Col. 1880-82, p. 790 (Hydroporus). 



E milianu s Cldivk, 1. c. p. 183. — Sharp, 1. c. 

 p. 794. 



var. Ströheli Steinh. Atti Soc. Ital. Sc. Nat. 

 XII, 1869, p. 249. - Reg. Bull. Soc. Ent. 

 Ital. XXXV, 1903, p. 55. 



var. tnacu lar is J. Lee. Ann. Lyc. Nat. Hist. 

 New York V, 1851, p. 206. — Crotch, Trans. 

 Amer. Ent. Soc. IV, 1873, p. 391. - Sharp, 

 On Aquat. Carn. Col. 1880-82, p. 367. 



var. oh s cur ellu s J. Lee. 1. c. p. 206 : Proc. 

 Acad. Philad. VII, 1855, p. 290. - Crotch, 

 1. c. p. 391. — Sharp, 1. c. p. 367. 



Java 



Mexiko 

 Nord- u. Süd- 

 amerika 



Californien 



