TABLE OF CONTEXTS xi 



Page 



Sub Class II. Hexapoda 403 



Order I. Apleryguta 418 



Order II. Archiptera 41Q 



Order III. Orthoptera 421 



Order IV. Neuroptera 42 1 



Order Y. Slrepsiptera 422 



Order ^'I. Coleo])tera 423 



Order YII. Hymenoptera 424 



Order VIII. Rhynchota 427 



Order IX. Diplera 430 



Order X. Aphaniptera 431 



Order XI. Lepidoptera 432 



Class \'. Diplopoda 433 



SuiUL^RY 434 



Phylum X. Chordata 43S 



Sub Phylum I. Leptocardii 439 



Sub Phylum II. Tunicata 44r 



Order I. Copelala? 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. Jlyzontes 493 



Sub Class II. Petromyzontes 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. Phar)-ngognathi 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 I\'. Anura 520 



Series II. Amniota 520 



Class I. Reptilia 521 



Order I. Theromorpha 526 



Order II. Plesiosauria 526 



Order III. Ichthyosauria 526 



Order IV. Chelonia 526 



Order V. Rhynchocephalia 527 



Order VI. Dinosauria 52S 



Order VII. Squamata 529 



