W. A. Harding 
157 
W.A.H. del. 
Fig. 7. Glossosiplionia heteroclita. Fig. 8. Helobdella stagnalis. 
Fig. 7. Glossosiplionia heteroclita. Annulation and digestive tract, mth. Mouth, prb. Proboscis. 
sal. g. Salivary glands. Cr. Crop. st. Stomach, int. Intestine, an. Anus. Ovary omitted. 
(Schematic.) 
Fig. 8. Helobdella stagnalis. Annulation, digestive tract, etc. d. pi. Dorsal plate. Other lettering 
as before. (Schematic.) 
