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 reliculata, Baird, Ann. <Sr 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. fy Mag. Nat. Hist. xi. 

 Lynceus, Muller, sp. 



3. PLEUROXUS TEIGONELLUS. Three-cornered Water-flea. 



Pleuroxus trigonellus, Baird, Ann. fy Mag. Nat. Hist. xi. p. 93, t. 



3, f. 13 ; Trans. Berw. Nat. Club, ii. p. 151 ; Brit. Ent. p. 134, 



t. 17, f. 3. 

 Lynceus trigonellus, Midler, Ent. p. 74, t. 10, f. 5, 6 ; M. Edic. 



Crust, iii. p. 387; Koch, Deutsch. Crust, p. 36, t. 14. 



a d. Han well (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. 

 . Middlesex (Hamvell). 



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. 



