52 
CATALOGUE OF BRITISH CRUSTACEA. 
Cancer (Astacus) locusta, Penn. Brit. Zool. iv. p. 17. 
Cancer (Gammarus) locusta, Mont. Linn. Trans, xi. p. 359. 
O. pulex, O. Fabr. Faun. Gr. p. 254 P 
a — h. British Coast (in pools left by the tide). 
2. Gammarus fluviatilis. The Freshwater Screw. 
Gammarus fluviatilis, M. Edw. Crust, iii. p. 45. 
Astacus fluviatilis, Rcesel. Ins. Bel. iii. t. 52 ; Geoff. Hist. Ins. t. 21, 
f. 6. 
Squilla pulex, Degeer, Mem. viii. t. 33. 
Gammarus ftceselii, Gervais, Ann. Sc. Nat. 2nd ser. iv. p. 128. 
Gammarus aquaticus, Leach , Enc. Brit. Suppl. i. p. 425. 
a — g. Duddingston, near Edinburgh. From the collection of Dr. 
Leach. 
3. Gammarus pulex. The Flea-Screw. 
Gammarus pulex, Fabr. Ent. Syst. ii. p. 516 ; Latr. Hist. Nat. 
Crust, vi. p. 316 ; Mont. Linn. Trans, ix. t. 4, f. 2; Desm. Cons. 
p. 267, t. 45, f. 8 ; M. Edw. Crust, iii. p. 48. 
Cancer pulex, pt. Linn. Syst. Nat. i. p. 1055 ; Geoff. Ins. Par. ii. 
p. 667, t. 21, f. 6. 
Astacus pulex, Penn. Brit. Zool. iv. p. 17. 
a — c. Ireland (Loch Neagh). Presented by W. Thompson, Esq. 
? 4. Gammarus subterraneus. 
Gammarus subterraneus, Leach , Ed. Enc. vii. p. 403. 
Gammarus pulex, var. jun.P 
Well, St. Bartholomew’s Hospital, London. 
5. Gammarus marinus. Leach’s Coast-Screw. 
Gammarus marinus, Leach, Linn. Trans, xi. p. 359 ; Desm. Cons. ii. 
p. 267 ; M. Edw. Ann. Sc. Nat. xx. p. 367 ; Crust, iii. p. 46 ; 
Thomp. ( W .) Ann. Nat. Hist. xx. p. 242. 
a — e . s. Coast of Devon. From the collection of Col. Montagu. 
6. Gammarus carinatus. The Keeled Coast-Screw. 
Gammarus carinatus, fohnston, Zool. Journ. iv. p. 52. 
Berwickshire Coast. Dr. George Johnston. 
