CRUSTACEA. 
117 
Family Cyclopia. 
Cyclops, Muller. 
Cyclops quadricornis, Mull. Entomostr. 109, t. 18,/. 1-4. Latr. 
Gen. Crust, et Ins. i. 19. Ramd. Beytr. i. 1. 1, 2. Baird , Mag . 
Zool. and Bot. i. 321, t. 9,/. 1-4. Monoc. quadric., L. Faun. 
Suec. 2049. Degeer , Mem. vii. 483, t. 29, /. 11, 12, t. 30, /. 
1-8. Jurine, Mon. t.l, t. 2, t. 3. Geoffr. Ins. ii. 656, t. 21, 
/. 5. Cyclops vulgaris, Leach , Diet. Sc. Nat. xiv. 53Q. . Desm. 
Cons. 362, t. 53, /. 1-4. Edw. Crust, iii. 425. Cuv. R. A. 
(Crock.) t. 72, f. 2. 
a , 6. England. From the collection of Dr. Leach. 
c — g. Near London. Presented by Dr. Baird. 
Cyclopsina, M. Edw. 
Cyclopsina castor, Ediv. Crust, iii. 427. Baird , Proc. Bene. N. 
H. Club , ii. 428. Mon. cast., Jurine , Mon. 50, t. 4-6. Cycl. 
cast., Desm. Cons. 363, t. 53, /. 5. 
Var. Cycl. lacinulatus, Muller , Ent. 105, £. 16, /. 4-6. Cycl. 
ceeruleus, Muller , jEW. 102, £. 15, /. 1-9. Cycl. rubens, Midler , 
jEViZ 104, f. 16, /. 1-3. 
a —/. Near London. Presented by Dr. Baird. 
t 'a*!*? * | 
CaxthocaR'Pus, PFesZw?. 
Canthocarpus minutus, Baird. Proc. B°rw. N. H. Club , ii. 154. 
Cycl. min., Muller , EW. 101, £. 17, /. 1-7. Ramd. Beytr. 10, 
t. 3. Lam. Hiss. An. s . Vert. v. 126. Mon. staphylinus, 
Jurine , Mon. 75, £. 7,/. 1-19. Cycl. staph., Desm. Cons. 363, 
£. 53. /. 6. Canthoc. staph., Edw. Crust, iii. 428. 
a — e. Near London. Presented by Dr. Baird. 
Order SIPHONOSTOMATA. PELTOCEPHALA. 
Family Argulidje. 
Abgulus, Muller . 
Argulus foliaceus, Jurine , Ann. Mus. vii. 431, t. 26. Desm. 
Cons. 331, £. 50,/. 1 . Guerin , Zcew. 35,/. 1 . Edw. Crust. 
iii. 444.^ Pediculus, Baker , Microscope , ii. t. 14. Ins. aq. 
Lederm. i. 76, t. 37. Monoc. foliaceus, L. Syst. Nat. Argu¬ 
lus Delphini, Muller , Entom. 123. Leach , Z>ic£. &<?. AZct. xiv. 
529. Mon. Argulus, Z«6r. jE’w£. NysZ. ii. 489. Mon. Gyrini, 
