I 



PLATE III. 



Fig. 15' Alimentary canal. 25/1. 



Fig. 16. Longitudinal section throngli oesopLagus, stomach, 



and intestine. 40/1. 



Fig. 17. Longitudinal section through rectum. 80/1. 



Fig. 18- Longitudinal section through oesophogus. 80/1. 



Fig- 19- Opening of intestinal gland into stomach. 200/1. 



Fig. 20- Cross-section through abdomen. 80/1. 



Fig- 21. Section through intestinal wall with gland. 200/1. 



Fig. 22. Section through genital duct. 200/1. 



Fig. 23. Blood cells. 400/1. 



Fig. 24. Blood vessels in test. 200/1. 



Fig. 25. Section through heart and pericardium. 200/1. 



