CONTENTS xvii 



PAGE 



7. THE BLOOD-VASCULAR SYSTEM AND THE BODY CAVITY . . . 358 



8. EXCRETORY ORGANS (Antennal Glands, Shell Glands) . . 368 



9. THE CONNECTIVE TISSUE .... .370 



10. THE SEXUAL ORGANS . . .370 



11. SEXUAL DIMORPHISM .... . 376 



12. HERMAPHRODITISM IN THE CRUSTACEA . . . 381 



13. PARTHENOGENESIS CYCLIC REPRODUCTION . . . 382 



14. ONTOGENY ........ 382 



15. PHYLOGENY ........ 406 



Literature . . . . . 411 



FIRST APPENDAGE TO THE CRUSTACEA 



1. Trilobites . . . . . . . . . .414 



2. Gigantostraca ... .415 



3. Hemiaspidse .... .416 



4. Xiphosura ... .417 

 Literature .... .... 421 



SECOND APPENDAGE TO THE CRUSTACEA 



Pantapoda ... .422 



Literature . ..... 425 



CHAPTER VI 

 SECOND DIVISION OF THE AETHEOPODA 



Tracheata ......... 426 



CLASS I. Protracheata ....... 427 



Literature ......... 437 



CLASS II. Antennata . . . . . . . .438 



Systematic Review . . . . . . . .438 



1. OUTER ORGANISATION ....... 443 



A. THE BODY ........ 443 



B. THE LIMBS ........ 445 



2. THE INTEGUMENT AND GLANDS . . . . . . 458 



3. THE MUSCULATURE ....... 460 



4. THE ENTERIC CANAL ....... 460 



5. THE NERVOUS SYSTEM ....... 464 



6. THE SENSORY ORGANS . . . . . . . 469 



A. EYES ......... 469 



B. AUDITORY ORGANS ....... 471 



C. OLFACTORY AND GUSTATORY ORGANS . . . .474 



