xii TABLE OF CONTENTS. 



THE ANIMAL KINGDOM. 



A. METAZOA, p. 333. 

 (a) Coelomata, p. 333, 



PAGE 



I. CHORDATA ............ 333 



*Vertebrata 335 



**Amniota .......... 359 



(i) Mammalia . . . . . . . . 359 



Sauropsida .......... 372 



(ii) Aves . . 373 



(iii) Reptilia . . . . . . . . .381 



**Anamniota s. Ichthyopsida ....... 393 



(iv) Amphibia ......... 394 



(v) Pisces . 409 



(vi) Cyclostomi . . . . . . . .432 



*Cephalochorda s. Pharyngobranchii 437 



*Urochorda s. Tunicata . . . . . . . . .441 



II. MOLLUSCA 



*Glossophora ...... .... 



(i) Cephalopoda 



(ii) Scaphopoda ........ 



(iii) Pteropoda ......... 



(iv) Gastropoda ........ 



(a) Isopleura ........ 



(b) Anisopleura ....... 



*Lipocephala .......... 



(v) Lamellibranchiata ....... 



III. ARTHROPODA 490 



(i) Insecta ......... 497 



(ii) Myriapoda . . . . . . . .514 



(iii) Protracheata . . . . . . . .519 



(iv) Arachnida . . . . . . . .522 



(v) Crustacea . . . . . . .' . 531 



Pycnogonidae ......... 542 



IV. ECHINODERMATA 543 



(i) Holothurioidea ........ 549 



Echinozoa .......... 554 



(ii) Echinoidea . . . . . . . .554 



(iii) Asteroidea . . . . . . 563 



(iv) Ophiuroidea . . . . . . . -567 



Pelmatozoa . . . . . . . . . 570 



(v) Crinoidea . . 570 



(vi) Cystoidea 577 



(vii) Blastoidea . . . . . . . -577 



