VIII ANIMAL EESOTJKCES OF THE UNITED STATES. 



Page. 



III. Reptiles — Continued. 



27. Testudinata, (tortoises) 12 



28. Lacertilia, (lizards) 12 



29. Ophidia, (serpents) 12 



IV. AMPHIBIAlSfS 12 



30. Anura, (frogs) 12 



31. Urodela, (salamanders) - 13 



32. Proteida, (menobranchus, &c. ) 12 



33. Trachystomata, (sirens) 13 



V. Fishes 13 



34. Pediculati, (anglers) 13 



35. Plectognathi, (globe, trunk, and file fishes) 13 



36. Lophobranchii, (pipe-fishes, &c.) 13 



37. Hemibranchii, (sticklebacks, &c.) 13 



38. Teleocephali 13 



Hetcrosomata, (flat fishes) 13 



Anacanthini, (cods, &c. ) 14 



Acanthopteri, (spiny-finned fishes) 14 



Percesoces, (mullets, &c.) 15 



Synentognathi, (gar-fishes and flying-fishes) 15 



Haplomi, (pikes, &c.) 15 



Isospoudyli, (salmon, herring, &c.) 15 



Eventognathi, (carps) 15 



39. Nematognathi, (cat-fishes) 16 



40. Apodes, (eels) 16 



41. Cycloganoidei, (amias) 16 



42. Rhomboganoidei, (gar-pikes) 16 



43. Selachostomi, (paddle-fish) 16 



44. Chondrostei, (sturgeons) 16 



VI. Elasmobranchiates 16 



45. Holocephali, (chimseras) .., 16 



46. Raise, (skates and rays) 16 



47. Squall, (sharks) 16 



VII. Marsipobranchiates 17 



48. Hyperoartia, (lampreys) 17 



49. Hyperotreti, (hags) 17 



VIII. Leptocardians 17 



50. Cirrostomi, (lancelets) 17 



IX. Insects 17 



51. Insecta, (insects) 17 



52. Myriapoda, (centipedes, &c.) 17 



X. AUACHNEANS 17 



53. Arachnida, (spiders) 17 



XI. Arthropods 18 



54. Crustacea, (crabs, &c.) 18 



