Landeh. — Hemiurus crenatus. 



PLATE 3. 



Fig. 26. Sperm-morula. (X 1350.) 



Fig. 27. Protoplasmic remains of a sperm-morula from which the spermatozoa 



have become detached. X 1350. 

 Fig. 28. Sagittal section of the terminal portion of sexual ducts, reconstructed 



from sections. X circa 480. 

 Figs. 29-31. Subcuticular cells. X 1350. 

 Figs. 32, 33. Ovarian ova. X 1350. 

 Fig. 34. Muscles of body wall from a tangential section of the body as seen from 



the deep surface. X 700. 

 Fig. 35. Section of the anterior portion of an intestinal coecum near the branching, 



showing the thread-like modification of the epithelial cells. Drawn 



from a transverse section of the body. X 480. 

 Fig. 36. Frontal section of a portion of an intestinal coecimi, showing the deeply 



staining bodies between the epithelial ceils. X 700. 



