358 JORDAN. 



PLATE XIV. 



[Figs. 1-3 were drawn from nature by Mr. R. Takano.] 



Fig. I. Egg just after deposition ; accidental break in membrane (X 7). 



Fig. 2. Spermatophore just after discharge; gelatinous base with projecting 

 spine which bears tuft of spermatozoa (X 2). 



Fig. 3. Portion of upper pole of egg at time of deposition, showing " clear 

 spot" (X48) \cf. Fig. 21]. 



Fig. 4. Section through young egg ; follicle just forming (X 500). 



Fig. 5. Portion of section showing beginning yolk-formation (X 1000). 



Fig. 6. Surface view of portion of the upper pole of living egg soon after 

 deposition ; sp., spermatozoon entering egg in close proximity to the " clear spot," 



cl. sp. (y. 20). 



Fig. 7. Section through young egg showing yolk formation ; vacuolation of 

 cytoplasm in upper half of section ( X 90). 



Fig. 8. Egg membranes — Nectiiriis ( X 500). 



Fig. 9. Egg membranes — Diemyctyhis (X 500). 



Figs. 10-13. Sections through yolk-nuclei of different stages, dk. (X 375). 



Fig. 14. Section showing germinal vesicle in young egg ; egg, .31 mm. in 

 diameter (X 1000). 



[The outlines of Figs. 4-14 were drawn with the Zeiss camera.] 



