OF ARTS AND SCIENCES. 155 



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

 Malacostraca Podoplithalraa Britanuiaj, Nos. XVIII. , XIX., PL 

 XXXIV. fig. 1. 1875. 



Astacus JIuviatilis* Huxley, op. cit., j)assi)n, and p. 230 in 

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



Astacus torrenthun* Huxley, op. cit., p. 29G, fig. Gl, A, D, G, 

 ficr. G2, A, D. 1880. 



Astacus pall! pes (der Dolilenkrcbs), Klunziiiger, op. cit.., p. 341. 

 1882. 



Hab. Southern and Western P^urope : Greece, Dalmatia, 

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

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

 Ireland. 



66. Astacus fluviatilis. 



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



Astacus Jluviatilt's, Rondelet, Univ. Aquatil. Hist., Pars II. 

 p. 210, with cut. 1555. 



Astacus Jluviatilis, 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. 15G5. 



Cammarus., seu Astacus Jluviat/'Iis, Aldrovandi, De Reliq. Ani- 

 mal. Exang. : Moll., etc.. Cap. VI. p. 127, with cuts. 160G (in 

 part: Krebs, Edelkrebs, p. 129). 



Cammarus, seu Astacus Jluviatilis^ Jonston, Hist. Nat. de Ex- 

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

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



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

 Suecica, p. 358. 1746. 



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

 Pl.LIV.-LXI. 1755. 



Cancer astacus, Linne, Syst. Xat., 10th ed., I. G31, 1758; 

 12th ed., I. 1051. 17G7. 



Astacus fluviatilis., Fabricius, Syst. Entomol., p. 41-3. 1775. 



* Huxley leaves tlie question of tlio specific or tlio varietal value of tlie forms 

 A. nohilis and A. torrrntiam ( = A. Jluviatilis and .4. pallipos) undecided. 



t Under the name Axtacus fliivintilia, Caininnrus, or Gmiimdnis, the older au- 

 thors inchided not only ttie Edclkrehx, or tlie species to wliieli tlie name A. flu- 

 viatilis is now restricted, but also the Stcinhrchs or T/inlkrehs, a smaller form 

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

 A. torrentium and A. pall i pes under the name Sieinkrebs. 



