CONTENTS. 



5. Proboscis 



a. Anterior Region 



b. Middle Region 



a. Marginal Stylet-sacs 



b. Ejaculatory Duct 



c. Central Stylet and its Apparatus 



d. External Granular Glands 



e. Reservoir 



c. Posterior Region 



/. Varieties in the Structure of the Proboscis : — 



Structure of the Proboscis in Anvphiporus pulcher 



A. spectabilis 

 A. hastatus 

 A. bioculatus 



Tetrastemma melanocephala 

 T. Robertiance 

 T. Candida . 

 T. dorsalis . 

 T. vermicula 

 T. Jlavida 



Prosorhochmus Claparedii 

 Nemeries gracilis 

 N. Neesii 

 N. carcinophila 



g. Review of previous Interpretations of the Proboscis 



d. Reproduction of the Proboscis 



6. Digestive System 



a. Mouth 



b. (Esophagus 



c. Digestive Cavity proper 



7. Vascular System 



8. Nervous System 



a. Ganglia 



b. Great Lateral Nerve-Trunks 



9. Eye-specks 



10. Cephalic Furrows and Sacs 



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