CATALOGUE OF BRITISH CRUSTACEA. 
97 
Lynceus macrourus, Muller, Ent. p. 77, t. 10, f. 1 — 4; M. Edw. 
Crust, iii. p. 388. 
a— k. Highgate, Richmond, near London. Presented by Dr. Baird, 
F.L.S. 
4. ACROPERUS. 
Acroperus, Baird, Ann. Sr Mag. N. Hist, xi.; Brit. Entom. p. 129. 
Lynceus, pt., Baird, Proc. Berta. Nat. Club, i. 
Acroperus harp/E. Harp-shaped Water-flea. 
Acroperus harp®, Baird, Ann. 4' Mag. N. Hist. xi. p. 91, t. 3, f. 7; 
Proc. Berta. Nat. Club, ii. p. 151 ; Brit. Entom. p. 129, t. 16, f. 5. 
Lynceus harp®, Baird. Proc. Berta. N. Club, i. p. 100, t. 2, f. 17. 
Lynceus leucocephalus, Koch, Deutsch. Crust, p. 36, t. 10. 
a — e. Near Richmond. Presented by Dr. Baird. 
Osterly Park. 
Yetboim. 
Dunglass. 
2. Acroperus nanus. Dwarf-harp Water-flea. 
Acroperus nanus, Baird, Ann. 4' Mag. N. Hist. xi. p. 92, t. 3, f. 8 ; 
Proc. Berta. Nat. Club, ii. p. 151 ; Brit. Entom. p. 130, t. 16, f. 6. 
Norwood and Southall, near London. 
5. ALONA. 
Alona, Baird, Ann. Sr Mag. Nat. Hist, xi.; Brit. Ent. p. 131. 
Lynceus, Muller, sp. 
1. Alona quadrangularis. Square Water-flea. 
Alona quadrangularis, Baird, Ann. 4 - Mag. Nat. Hist. xi. p. 92, t. 
3, f. 9 — 11 ; Proc. Berta. Nat. Club, ii. p. 151 ; Brit. Entom. 
p. 131, t. 46, f. 4. 
Lynceus quadrangularis, M'tiller, Ent. p. 72, t. 9, f. 1 — 3 ; M. Edw. 
Crust, iii. p. 388 ; Koch, Deutsch. Crust, f. 36, t. 15. 
K 
