CATALOGUE OF BRITISH CRUSTACEA. 
Ill 
Monoculus quadricoruis, Linn. Faun. Suec. p. 2049 ; Degee r, Mem. 
vii. p. 483, t. 29, f. II, 12, t. 30, f. 1 — 8; Jurine, Hist. i. 
t. 1—3. 
Monocle a queue foiirchue, Geoff". Ins. ii. p. 656, t. 21, f. 5. 
Cyclops Geoffrovi, Leach, Sam. Brit. Ins. p. 81. 
Cyclops vulgaris, Leach, Diet. Sc. Nat. xiv. p. 539 ; Desni. Cons. 
p. 362, t. 53, f. 1 — 4 ; M. Edw. Crust, iii. p. 425 ; Cuv. R. A. 
(Croch.) t. 72, f. 2. 
Nauplius saltatorius, Muller, Ent. p. 40, t. 1, f. 3 — 7 (juv.). 
Pediculus aquaticus, Baker , Mic. p. 383, t. 15, f. 1 — 4. 
Small Water-Flea, Pritchard, Mic. Cab. p. 91, t. 9, f. 1, 2. 
Satyr, Baker, Empl.for Mic. t. 12, f. 23 — 26 (young). 
Food of Vendace, Knox, Trans. Roy. Soc. Edin. xii. t. II, f. 4. 
Var. Cyclops agilis, Koch, Deutsch. Crust, p. 21, t. 3. 
Var. Cyclops quadricornis, var. rubens, albidus, viridis, fuscus,pra- 
sinus, Jurine, t. 1 — 3. 
Var. Cyclops pictus, Koch, Deutsch. Crust, p. 21, t. 1. 
Var. Cyclops pulchellus, Koch, l. c. p. 21, t. 2. 
Var. Cyclops vulgaris, Koch, l. c. p. 21, t. 4. 
Var. Cyclops obsoletus, Koch, l. c. p. 21 , t. 5. 
Var. Cyclops bistriatus, Koch, l. c. p. 21, t. 7. 
Var. Cyclops lucidulus, Koch, l. c. p. 21, t. 10. 
Var. Cyclops phaleratus, Koch, l. c. p. 21, t. 9. 
Ponds and Ditches. 
a, b. England. From the collection of Dr. Leach. 
c — g. Near London. Presented by Dr. Baird. 
2. CANTHOCAMPTUS. 
Canthocamptus, Baird, Brit. Ent. p. 204. 
Monoculus, Linn. sp. 
Cyclops, Muller, sp. 
Cyclopsina, sp. M. Edw. Crust, iii. p. 427. 
Canthocampus, Westwood, Ent. Text-Book, p. 115. 
Canthocarpus, Baird, Proc. Benv. Nat. Club, i. p. 97. 
Harpacticus, pt. Dana , Proc. Amer. Acad. Art. Sc. 1847. 
Nauplius, Philippi, Weigm. Arch. 
Amymone, Muller, Ent. (juv.) 
Doris, Koch. 
