CRUSTACEA. 117 



Family CYCLOPID^E. 



CYCLOPS, Midler. 



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,f. 1-4. Monoc. quaclric., L. Faun. 



Suec. 2049. Degeer, Mem. vii. 483, t. 29, /. 1 1, 12, t. 30, /. 



1-8. Jurine, Mon. t.}, t. 2, t. 3. Geojfr. Ins. ii. 656, . 21, 



y. 5. Cyclops vulgaris, Leach, Diet. Sc. Nat. xiv. 539. Desm. 



Cons. 362, t. 53, /. 1-4. Edw. Crust, iii. 425. C>. R. A. 



(Crock.) t. 72, /. 2. 



a, 6. England. From the collection of Dr. Leach. 

 c g. Near London. Presented by Dr. Baird. 



CYCLOPSINA, M. Edw. 



CYCLOPSINA castor, Edw. Crust, iii. 427. Baird, Proc.Benc. N. 



H. Club, ii. 428. Mon. cast., Jurine, Mon. 50, t. 4-6. Cycl. 



cast., Desm. Cons. 363, t. 53, /. 5. 

 Var. Cycl. lacinulatus, Midler, Ent. 105, t. 16, /. 4-6. Cycl. 



caeruleus, Midler, Ent. 102, 1. 15, /. 1-9. Cycl. rubens, Midler, 



Ent. 104, t. 16, /. 1-3. 

 a/. Near London. Presented by Dr. Baird. 



CANTHOCARPUS, Westw. 



CANTHOCARPUS minutus, Baird. Proc. Berw. N. H. Club, ii. 154. 

 Cycl. min., Miiller, Ent. 101, t. 17, /. 1-7. Ramd. Beytr. 10, 

 t. 3. Lam. Hiss. An. s. Vert. v. 126. Mon. staphylinus, 

 Jurine, Mon. 75, t. 7,f. 1-19. Cycl. staph., Desm. Cons. 363, 

 t. 53. /. 6. Canthoc. staph., Edw. Crust, iii. 428. 



a e. Near London. Presented by Dr. Baird. 



Order SIPHONOSTOMATA. PELTOCEPHALA. 



Family ARGULID.&. 



AKGULUS, Miiller. 



ARGULUS foliaceus, Jurine, Ann. Mus. vii. 431, t. 26. Desm. 

 Cons. 331, t. oO,f. 1. Guerin, Icon. t. 35, f. 1. Edw. Crust. 

 iii. 444. Pediculus, Baker, Microscope, ii. t. 14. Ins. aq. 

 Lederm. i. 76, t. 37. Monoc. foliaceus, Z. Syst. Nat. Argu- 

 lus Delphini, Miiller, Entom. 123. Leach, Diet. Sc. Nat. xiv. 

 529. Mon. Argulus, Fabr. Ent. Syst. ii. 489. Mon. Gyrini, 



