564 R. 0. PtJNNETT. 



Fig. 8. — M. rufa. Section through caudal a])pendage. X 80. 



Fig. 9. — M. rufa. Corpuscles from rhynchoccelom pocket., two of wliicli 

 are seen sideways. X 580. 



Fig. 10, a — c. — M. rufa. Transverse sections thiough brain, cerebral 

 organ, and head slit taken at intervals of 30 /i. X 45. 



Fig. 11.— M. rufa. Diagrammatic reconstruction of the anterior end of 

 the animal. Only a small portion of the proboscis sheath is shown, viz. the 

 portion which gives off the pockets. X 20. 



Fig. 12. — Oxypolia beaumontiana. Sketch of live animal. Some- 

 what reduced. 



Fig. 13. — O. beaumontiana. Sketches of anterior end made by Mr. W. 

 I. Beaumont from the live animal. Enlarged. 



Fig. 11. — 0. beaumontiana. Section through a portion of the proboscis. 

 X 110. 



Fig. 15. — 0. beaumontiana. Section through a portion of the skin in 

 the oesophageal region. From a thionin preparation to show the cutis glands. 

 X 100. 



Fig. 1G. — O. beaumontiana. Section through anterior end near pro- 

 boscis pore. X 45. 



Fig. 17. — O. beaumontiana. Section through body-wall in oesophageal 

 region, x 80. 



Fig. 18. — O. beaumontiana. Diagram showing arrangement of median 

 dorsal nerve. 



Fig. 19, a — e. — O. beaumontiana. Section through brain and cerebral 

 organ. Distance between a and i = G9 /t ; between the succeeding sections 

 = 25 /«. X 45. 



Fig. 20. — O. beaumontiana. Two views of brain from model recon- 

 structed from sections, {a) Seen from the side. (Jb) Seen from behind. 

 X 15. 



Fig. 21. — O. beaumontiana. Longitudinal horizontal section through 

 intestinal region. X 45. 



Fig. 22. — O. beaumontiana. Diagrammatic reconstruction of anterior 

 end, showing the arrangement of the various systems. The proboscis sheath 

 is omitted, x 10. 



