98 
CATALOGUE OF BRITISH CRUSTACEA. 
Monoculus striatus, Jurine , Hist. t. 16, f. 1,2? 
Monoculus quadrangulus, Gmel. S. N. p. 3008. 
Near Richmond, Peaseburn, Berwickshire, and near Yetholm. 
2. Alona reticulata. Netted-square Water-flea. 
Alona reticulata, Baird , Ann. S? Mag. Nat. Hist. xi. p. 93, t. 3, 
f. 12 ; Proc. Berw. Nat. Club, ii. p. 151 ; Brit. Entom. p. 132, t. 
16, f. 3. 
Near Southall. 
3. Alona ovata. Egg-shaped Water-flea. 
Alona ovata, Baird, Brit. Ent. p. 133, t. 16, f. 2. 
Blackheath. 
6. PLEUROXUS. 
Pleuroxus, Baird, Ann. $r Mag. Nat. Hist. xi. 
Lynceus, Muller, sp. 
1. Pleuroxus trigonellus. Three-cornered Water-flea. 
Pleuroxus trigonellus, Baird, Ann. Mag. Nat. Hist. xi. p. 93, t. 
3, f. 13 ; Trans. Berw. Nat. Club, ii. p. 151 ; Brit. Ent. p. 134, 
1. 17, f. 3. 
Lynceus trigonellus, Muller, Ent. p. 74, t. 10, f. 5, 6; M. Edw. 
Crust, iii. p. 387 ; Koch, Deutsch. Crust, p. 36, t. 14. 
a — d. Hanwell (Middlesex). Presented by Dr. Baird. 
Near London (Copenhagen Fields). 
Berwickshire and Yetholm. 
2. Pleuroxus uncinatus. Hook-beaked Water-flea. 
Pleuroxus uncinatus, Baird, Brit. Ent. p. 135, t. 17, f. 4. 
a. Middlesex (Hanwell). 
3. Pleuroxus hamatus. Hook-armed Water -flea. 
Pleuroxus hamatus, Baird , Ann. Mag. Nat. Hist. xi. p. 94, t. 3, 
f. 14 ; Trans. Berw. Nat. Club. ii. p. 151 ; Brit. Ent. p. 136, t. 
17, f. 5. 
