OP ARTS AND SCIENCES. 155 



Potamohius astacus, G. B. Sowerby, Continuation of Leach's 

 Malacostraca Podophthalraa Britauuia?, Nos. XVIII., XIX., PL 

 XXXIV. fig. 1. 1875. 



Astacus Jluviatilis* Huxley, op. cit., passim, and p. 230 in 

 particular, frontispiece and figs, 1-GO. 1880. 



Astacus torrentium* Huxley, op. cit.^ p. 296, fig. 61, A, D, G, 

 fig. 62, A, D. 1880. 



Astacus palUpes (der Dohlenkrebs), Klunzinger, op. cit., p. 341. 



1882. 



Hab. Southern and Western Europe: Greece, Dalmatia, 

 Islands of Cherso and Veglia, Trieste, Italy (Heller); France; 

 Switzerland ; Alsace (Lereboullet) ; Spain (Huxley) ; England, 

 Ireland. 

 66. Astacus fluviatilis. 



?Cammarus, Belon, De Aquatil., p. 353, fig. on p. 355. 1553. 



Astacus fluviatilis, Rondelet, Univ. Aquatil. Hist., Pars II. 

 p. 210, with cut. 1555. 



Astacus fluviatilis., Gesner, Hist. Animal., Lib. IV. p. 120, with 

 cut. 1558 (in part: Edelkrebs,t p. 122). 



Cammarus, Mattioli, Comment. Dioscor. de Med. Mat., Lib. II. 

 p. 309, with fig. 1565. 



Cammarus, sen Astacus fluviatilis, Aldrovandi, De Reliq. Ani- 

 mal. Exang.: Moll,, etc.. Cap. VL p. 127, with cuts. 1606 (in 

 part: Krebs, Edelkrebs, p. 129). 



Cammarus, seu Astacits fluviatilis, Jonston, Hist. Nat. de Ex- 

 ang. Aquat., Lib. IV. p. 18, Pi, IL fig. 4, PI. III. figs. 2, 3, 4, 

 PI. IV. fig. 1 (fig. 2 after Aldrovandi). 1650. 



Cancer macrourus ; rostro supra serrato, etc., Linne, Fauna 

 Suecica, p. 35S. 1746, 



Der Fluskrebs, Rosel, Insekten-Belustigung, Th, III. p. 305, 

 PI. LIV.-LXL 1755. 



Cancer astacus, Linne, Syst. Xat., 10th ed., I. 631, 1758 ; 

 12th ed., L 1051, 1767. 



Astacus fluviatilis., Fabricius, Syst. Entomol., p. 413. 1775. 



* Huxley leaves the question of the specific or the varietal value of the forms 

 A. nohilis and A. torrentium ( = A. Jluviatilis and A. pallipes) undecided. 



t Under the name Astacus Jluviatilis, Cammarus, or Gammarus, tlie older au- 

 thors included not only the Edelkrebs, or the species to which the name A. Jlu- 

 viatilis is now restricted, but also the Steinkrehs or Thulkrtbs, a smaller form 

 now known as A. torrentium. Indeed, it is probable that these authors confounded 

 A. torrentium and A. pallipes under the name Steinkrehs. 



