CATALOGUE OF BRITISH CRUSTACEA. 
35 
2. ASTACUS. 
Astacus, Leach , Sam. Ent. U. Comp. p. 95 (1819). 
Homarus, M. Edw. Crust, ii. p. 333 (1837). 
Astacus, pt. Fahr. Ent. Syst. Suppl. p. 406. 
Cancer, pt. Linn. Syst. Nat. 
1. Astacus gamjiarus. Common Lobster. 
Astacus gammarus, Leach , Ed. Eric. vii. p.398; Sam. Ent. U. 
Comp. p. 95. 
Cancer gamraarus, Linn. Faun. Suec. p. 2033; Syst. Nat. p. 1050 ; 
Herhst, ii. p. 42, t. xxv. ; Penn. Brit. Zool. iv. p. 8, t. 10 
f. 21. 
Astacus marinus, Fahr. Ent. Syst. Suppl. p. 406 ; Lair. Hist. Nat. 
Crust, vi. p. 233. 
Homarus vulgaris, M. Edw. Crust, ii. p. 334 ; Couch, Cornish 
Fauna ; Kroyer, Mon. Hippolyte, t. 6, f. 133 (embryo) ; Bell, 
Brit. Crust, p. 242 ; Lucas , Expl. Alger, p. 38. 
a — d. Britain. From the collections of Col. Montagu and Dr. 
Leach. 
e — g. “ Larvce of Astacus marinus.” Cork Harbour. Presented 
by J. V. Thompson, Esq. 
3. NEPHROPS. 
Nephrops, Leach, Linn. Trans, xi. p. 344 (1814 — 1815). 
Astacus, pt. Fabr. Ent. Syst. Suppl. p. 406. 
Cancer, pt. Linn. Syst. Nat. 
1. Nephrops norvegicus. Norway Lobster. 
Cancer norvegicus, Linn. Faun. Suec. p. 2039 ; Syst. Nat. i. p. 
1053 ; O. Fahr. Faun. Grcenl. p. 242; Herbst, ii. t. xxvi. f. 3 ; 
Ascanius, Icon. iv. p. 6, t. 39. 
Astacus norvegicus, Fabr. Syst. Ent. p. 418 ; Penn. Brit. Zool. 
(edit. 1777) iv. pi. xii. f. 24, p. 14. 
Nephrops norvegicus, Leach. Ed. Enc. vii. p. 400 ; Linn. Trans. 
xi. p. 344 ; Mai. Pod. Brit. t. xxxvi. ; Guerin, Icon. t. 19, f. 1 ; 
M. Edw. Hist. Nat. Crust, ii. p. 336 ; Bell, Brit. Crust, p. 251. 
