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Sub Class II. Hexapoda 403 



Order I. Apterygota . 418 



Order II. Archiptera . . 419 



Order III. Orthoptera .421 



Order IV. Neuroptera . 42 1 



Order V. Strepsiptera .... 422 



Order VI. Coleoptera 423 



Order VII. Hymenoptera . . 424 



Order VIII. Rhynchota .. 427 



Order IX. Diptera . . 430 



Order X. Aphaniptera . . 431 



Order XI. Lepidoptera . . 432 



Class V. Diplopoda 433 



SUMMARY . . 434 



Phylum X. CHORDATA 438 



Sub Phylum I. Leptocardii 439 



Sub Phylum II. Tunicata 441 



Order I. Copelata; . . 443 



Order II. Tethyoidea 443 



Order III. Thaliacea 447 



Sub Phylum III. Enteropneusta 448 



Sub Phylum IV. Vertebrata 449 



Series I. Ichthyopsida 491 



Class I. Cyclostomata 491 



Sub Class I. Myzonles 493 



Sub Class II. Petromyzonlei 493 



Class II. Pisces 493 



Sub Class I. Elasmobranchii 504 



Order I. Selachii 506 



Order II. Holocephali 507 



Sub Class II. Ganoidei 507 



Sub Class III. Teleostei 508 



Order I. Physostomi 510 



Order II. Pharyngognalhi 510 



Order III. Acanthopteri 511 



Order IV. Anacanthini 511 



Order V. Lophobranchii 511 



Order VI. Plectognathi 512 



Sub Class IV. Dipnoi 512 



Class III. Amphibia 513 



Order I. Stegocephali 519 



Order II. Gymnophiona 519 



Order III. Urodela 519 



Order IV. Anura 520 



Series II. Amniota 520 



Class I. Reptilia x 521 



Order I. Theromorpha 526 



Order II. Plesiosauria 526 



Order III. Ichthyosauria 526 



Order IV. Chelonia 526 



Order V. Rhynchocephalia 527 



Order VI. Dinosauria 528 



Order VII. Squamata 529 



