92 
CATALOGUE OF BRITISH CRUSTACEA. 
3. MACROTHKIX. 
Daphnia, Muller. 
Lynceus, Desm. Cons. 
Monoculus, Jurine, Mon. 
Macrothrix, Baird, Ann. Sr Mag. Nat. Hist. xi. p. 87 (1843). 
Acanthocercus, Schcedler, Erichs. Arch. (1846). 
1. Macrothrix laticornis. Broad-horned Water-flea. 
Macrothrix laticornis, Baird, Ann. §■ Mag. Nat. Hist. xi. p. 87, t. 2, 
f. 9, 10; Brit. Ent. p. 103, t. 15, f. 2. 
Monoculus laticornis, Jurine, Mon. p. 151, t. 15, f. 6, 7. 
Daphnia curvirostris, Muller, Ent. p. 93? t. 13, f. 1, 2? 
Acanthocercus curvirostris, Schcedler, Erichs. Arch. 1846. 
a — d. Near London, Southall, Highgate. Presented by Dr. Baird. 
Ireland, Belfast. 
2. Macrothrix roseus. Pink Water-flea. 
Monoculus roseus, Jurine, Hist. p. 150, t. 15, f. 4, 5. 
Daphnia rosea, M. Edw. Crust, iii. 384 ; Yarrell, Brit. Fishes, ii. 
p. 93 (vignette). 
Macrothrix roseus, Baird, Brit. Ent. p. 104 ; Berw. Nat. Club, ii. 
p. 149. 
Lochmaben (Sir Win. Jardine). 
4. BOSMINA. 
Monoculus, Jurine. 
Lynceus, Muller. 
Daphnia, M. Edw. 
Bosmina, Baird, Berw. Nat. Club. (1845). 
Eunica, Koch, Deuts. Crust. 
1. Bosmina longirostris. Long-beaked Water-flea. 
Bosmina longirostris, Baird, Ann. Sr Mag. N. Hist. xvii. p. 412, t. 
9 B, f. 1 ; Brit. Ent. p. 105, t. 15, f. 3. 
Lynceus longirostris, Muller, Ent. p. 76, t. 10, f. 7, 8. 
Monoculus cornutus, Jurine , Hist. p. 142, t. 14, f. 8 — 10. 
