CATALOGUE OF BRITISH CRUSTACEA. 
99 
Lynceus hamatus, Baird, Proc. Berw. Nat. Club, i. 100, t. 2, f. 18. 
Yetholm. 
7. PERACANTHA. 
Peracantha, Baird, Ann. Mag. Nat. Hist. xi. ; Brit. Ent. p. 
136. 
Lynceus, Muller, sp. 
1. Peracantha truncata. Blunt Water-flea. 
Peracantha truncata, Baird, Ann. Sf Mag. Nat. Hist. xi. p. 94, t. 
3, f. 15 ; Proc. Berw. Nat. Club. ii. p. 151 ; Brit. Ent. p. 137, t. 
16, f. 1. 
Lynceus truncatus, Muller, Ent. p. 75, t. 11, f. 4 — 6; M. Edw. 
Crust, iii. p. 388; Koch. Deutsch. Crust, p. 36, t. 11. 
a — e. Near London (Copenhagen Fields, Richmond, &c.). Pre- 
sented by Dr. Baird. 
Near Yetholm. 
