108 



Fig. 2. 



Fig. 3. 



'^^f* 



Fig. 4. 



Fig. 2. Horizontal section through middle of ovo-testis (left genital gland) to show 

 disposition of pigment cells (indicated by the black dots). Leitz 3", oc. 2, camera and 

 reduced to ^/g. White patchesare the testis portions; shaded bodies are the ova in process 

 of resorption; ov. ovum (note the nucleus lying in a vacuole). 



Fig. 3. Single ovum in ovo-testis. Leitz 3, oc. 2, camera. Note indistinct nucleus 

 and two protoplasmic strands connecting the ovum with the seminiferous tubule. Also 

 the pigment cells. 



Fig. 4. Single ovum in right genital pland. Leitz 3, oc. 2, camera. Note ovum 

 connected to the follicle by two protoplasmic strands. Also the larger nucleoli at the 

 periphery of the nucleus and the smaller at the medulla. 



stage of resorption shown in Fig. 24, are all represented in my sections. 

 In the five cases mentioned above, however, the invasion of pigment is 

 certainly more marked. The left genital gland must therefore now be 

 regarded as a true ovo-testis. 



