154 PROCEEDINGS OF THE AMERICAN ACADEMY 



Steinlcrebs, Lereboullet, Comptes Reudus, XXXIII. 379. 

 1851. 



Astacus longicornis, Lereboullet, Mem. Soc. Nat. Strasbourg, 

 V. 2 (separate pagination), PI. I. figs. 2-2**. 185S. 



Astacus torrcntium (Steinkrebs) (in part), Gerstfeldt, Mem. 

 Acad. Imper. Sci. St. Petersbourg, IX. 574, 579, 581, 584. 1859 

 (after Koch, Erichson, aud Lereboullet). 



Astacus torrentium (Steinkrebs), Klunzinger, Jahresli. Vereins 

 vaterliiudl. Naturkunde Wurttemberg, XXXVIII. 340. 1882. 



Ilab. Central Europe ( Bohemia, Bavaria, Wiirtemberg, Al- 

 sace)*. 



The branchial formula of A. torrentium is the same as that of 

 A. pallipes. 



G5. Astacus tallipes. 



? Astacus astacus, Pennant, Brit. Zool., IV. 18, PI. XV. fig. 27. 

 1777. 



Astacus Jluviatilis (in part), Milne Edwards, op. cit., II. 330. 

 1837 (first " variety " noted on p. 331). — Cuvier's Regne Animal, 

 Disci[)les' ed., Crust., PI. XLIX. fig. 2. 



Dufilenkrebs^'f Lereboullet, Comptes Rendus, XXXITI. 376. 

 1851. 



Astacus Jluviatilis, Bell, Hist. Biit. Stalk-eyed Crust., p. 237, 

 with cut. 1853. 



Astacus pallipes, Lereboullet, Mem. Soc. Sci. Nat. Strasbourg, 

 V. 7 (separate pagination), PI. II., PI. III. figs. 3-3'^. 1858. 



Astacus pallipes, var. Jlavus, Lereboullet, Mem. Soc. Sci. Nat. 

 Strasbourg, V. 9. 1858. 



Astacus torrentium (Steinkrebs) (in part), Gerstfeldt, op. cit., 

 p. 577. 1859. 



Astacus saxatilis, Heller, Die Crust, siidl. Europa, p. 217, 

 PI. VII. fig. 5. 1863. 



? Astacus fontinalis (I'ecrevisse a pieds blancs), Carbonnier, 

 L'Ecrevisse, p. 8. 1869. 



atilis, ami tlieir close afBnity witli eacli otlicr. He shows tliat the dark color of 

 A. Irislls is due to a coat of adhesive mould, and dismisses the question of the 

 specific value of the differences with the remark that the distinctions may have 

 been more evident during life. 



* A. torrrritiitm, A. pallipes, and A. flnriatllis have been so generally con- 

 founded by European authors that the data are insufficient for definitely fi.xing 

 their geographical range. 



t Here considered by Lereboullet but a variety of A. Jluviatilis. 



