I go Dr. Eugen von Ferrari. 



Nepa cinerea Schellenberg, Land- und Wasserwanzen 32, tab. 14, fig. 1; 1800. 

 Nepa cinerea Schell, Cim. Helvet., tab. IV; 1800. 



Nepa cinerea Latr., Hist. nat. des Crust. et Ins. XII, 284, pl. 95, fig. 8; 1800/05. 

 Le scorpion aquatique ä corps ovale Geoff., Hist. des insect. I, 481, pl. 1, 12; 1800. 

 Nepa cinerea Tign., Hist. nat. insect. IV, 249, pl. 5, fig. 6; 1802. 

 Nepa cinerea Walkenaer, Fauna parisienne II, 334; 1802. 

 Nepa cinerea Fabr., Syst. Rhyng. 107, 8; 1803. 

 Nepa cinerea Hentsch, Epit. entom. syst. 186; 1804. 

 Nepa cinerea Shaw, General zoology pl. 55, 56; 1806. 

 Nepa cinerea Latr., Gener. Crust. et Ins. III, 148; 1807. 

 Nepa cinerea Cuvier, Regne anim. III, 398, Atl. pl. 94, fig. 2; 181 7. 

 Nepa cinerea Lumnitzer, Naturhist. Tafeln, Gl. E II, 25; 1825. 

 Nepa cinerea Fall., Hemipt. Suec. I, 179, 1; 1826/29. 

 Nepa cinerea Zetterstedt, Fauna ins. läpp. 5087; 1825. 

 Nepa cinerea Burm., Lehrbuch der Naturgeschichte 388; 1830. 



Nepa cinerea Dufour L., Memoire des savants etrang. ä l'acad. des sc, 1. IV, Recherch. anatom., 

 Hemipt. 81 ; 1833. 



Nepa cinerea Läpp., Essai d'un classif. syst, de l'ordre des Hemipt. 18, 4; 1833. 



Nepa cinerea Brülle, Hist. des insect. IX, 265; 1835. 



Nepa cinerea Burm., Handb. der Entom. II, 196. Handatl. zoolog., tab. 29, fig. 22; 1835. 



Nepa cinerea Curtis, Brith Entom. XV, 700; 1838. 



Nepa cinerea Brülle, Blanchard, Hist. nat. des ins. III, 90; 1840. 



Nepa cinerea Zetterstedt, Ins. läpp. 283; 1840. 



Nepa cinerea Amyot et Serville, Hist. nat. des ins. Hemipt. 440; 1843. 



Nepa cinerea Kollar, Bildl. Naturgesch., tab. LXXXII, fig. 5, pag. 390; 1846. 



Nepa cinerea Amyot, Annales de la soc. entom. de France IV, 336 — 361 ; 1847. 



Nepa cinerea Herrich-Schaeffer, Die wanzenartigen Ins. VIII, 21, tab. CCLIX A — d; 1848. 



Nepa cinerea Lucas, Explor. scient. de l'Algier, zool. III, 43; 1849. 



Nepa cinerea Poeppig, Illustr. Naturgesch. IV, ior, fig. 3159, 3160; 185 1. 



Nepa cinerea Carus, Icon zootom. tab. XIV, Fig. 41; 1857. 



Nepa cinerea Chenu, Encycl. d'Hist. nat. 205; 1859. 



Nepa cinerea Flor, Die Rhynchot. Livl. 762; 1860. 



Nepa cinerea Fieber, Die europ. Hemipt. 101; 1860. 



Nepa cinerea Disconzi, Entom. vicentina 200; 1865. 



Nepa cinerea Douglas et Scott, Brith Hemipt. VIII, 20, fig. 1; 1865. 



Nepa cinerea Brehm, Illustr. Thierleben VI, 526; 1869. 



Nepa cinerea Wood, Ent. M. M. XXI, 20; 1884. 



Ausser diesen sind noch citirt in Stoll, Wanzen IV, pag. 9; 1792: 

 A Wader Scorpion Bradley, Phil. Account of the works of nature 158, tab. 26, fig. II. litt. C. 

 Nepa cinerea Goetzens, Beiträge II, 173, 5. 

 '■ ? Swammerdam, Bibel der Natur, p. m. 97, tab. 3, fig. 4. 



Ferner citirt Fabricius in seiner Entomologia systematica 1794 noch folgende: 

 Nepa scorpio aquaticus Degeer, Insect. I, 481, 2. 

 Scorpius vulgaris aquaticus Petiver Gazophyl, tab. 74, fig. 4; 1702. 

 Cimex aquaticus Huffn., Pict., tab. II, fig. 2. 



Ovata. Fusco cinerea usque ad fulvum. Pedes annulis irregularibus, pallidioribus. 

 Membrana obscurior. Oculi nigri aüt olivacei. Caput, coxae I, pronotum dense granu- 

 lata. Crista capitis integra. Cornua p. a. p. obsoleta, cristis longitudinalibus obtusioribus, 

 confluentia. Sulcus transversus non profundus. P. p. p. margine antico recto, postico 

 non excavato, sed in toto leviter arcuato, cum apertura posteriori. Furca scutelli obso- 

 leta, etiam tubercula ad baseos spinarum lateralium absunt. Metanotum fusco-velu- 

 tinum. Hemelytra pone medium sat ampliatae. Alae cinereo-fumatae, venis rubris ad 

 croceum. Dorsum miniatum, fascia media fusca interdum, absente aut rudimentaria, 

 maculis fuscis medianis substituta. Segmentum genitale fuscum. Prosternum planum, 

 (aciebus lateralibus antice convergentibus, declivioribus. Antice angustatum. Meso- 



