11 
Xe Conte Dr. John L., General Kemarks up. the Col, of Lake Super. 
(Hydrop. tataricus ~ geniculatus.) 
Agassiz, Lake superior, 1850, T. IV., p. 215. 
— — Descr. of new spec. of Col. from California. (Ag. morosus ~ 
congener.) 
Ann. Lyceum nat. bist., 1851, T. 5, p. 125—216. 
— — Analytical table of spec. of Hydroporus in United States. 
(Hydrop. scitulus — septentrionalis.) 
Proc. Acad. Nat. Sc. Pbilad., 1855, T. 7, p. 290—299. 
— — (Hydrop. obesus — Sanmarkii.) 
ibid. 1866, p. 365. 
— — Classification of Col. of N. Amer. 1861. 
— — (Hydrop. congruus == SanmarJcii.) 
Bull. geol. Sur* IV., 1878, p. 452. 
Leprieur C. E. 0., Notes sur Hydroporus opatrinus. 
Ann. Fr., 1876, Bull. p. 61 u. 102. 
— — Tableau synoptique d. Hydrop. opatrinus. 
ibid, p. 119. 
(Oxynopt. Aristidis) 
ibid., 1879, Bull. p. 82 u. 112. 
— — Ein. Bemerk, üb. Hydroporen d. Gruppe d. opatrinus angeh. 
Mittheil. d. Schweiz, ent. Ges. Bd. 4, Hefe 10, p. 566-570. 
— — (Ueber Hydrop. opatrinus u. Verwandte.) 
Petite nouv., IL, p. 53. 
Lettner K., Agabus silesiacus (= nitidus) 
Arb. d. schles. Ges. f. vaterl. Cultur 1843, p. 170-174. 
— — {Agabus Kotschyi =z melanarius.) 
ibid. 1848. 
Linne Carl, Fauna Suecica ed. I. 1746, ed. II. 1761. 
Systema naturae ed. 10, T. II. 1759. ed. 12, T. II. 
id. ed. Gmelin, T. I. vol. 4, 1788. 
Lucas Hippolyte, Hist. nat. d. anim. artic. d'Algerie. (Explor. d'Alg.) 
T. IL 1849. 
Maeklin Friedrich Wilhelm, (Hydrop. sibiricus — dorsalis) 
Svensk. Ak. Hand. (2) 18, 4, p. 22. 
Mannerheim Carl Gustav, Graf von, (Golymb. Prescotlii.) 
Hummel's Essais ent. XII. 1829, p. 21. 
— — Observations rel. aux sexes d. Hydrocanth. 
Acta Soc. Fennicae, 1842, T. 1, fasc. 2, p. 249—261. 
— — Beitrag zur Käferf. der Aleutischen Inseln, Sitka u. Neucaliforn. 
Bull. Mose, 1843, T. 16, p. 175-314. 
