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Sidnev I. Kornliauser 
Fig. 10. Longitudinal section of terminal chamber of ovariole {E. hinotaia) show- 
ing mitoses near terminal filament. x 485. 
Figs. 11, 12. Successive sections through distal end of tubiüe from testis ot E. 
curvata, cut at an angle of about 30° with the axis of the tubule. Figure 11 shovs 
part of the nucleus of the apical cell and a degenerating cyst on the right. Figure 12 
shows part of the cytoplasm and processes of the apical cell \rith degenerating cysts 
on both right and left. x 320. 
Fig. 13. Section through a))ical cell (testis of E. bim(ala) of a tubule sbowing 
no degenerating cysts. x 240. 
Plate XIX. 
Figs. 14 — 28. Enchenopa hinotaia. 
Fig. 14. Spermatogonium of early generation, quiescent state. 
Fig. 15. Spermatogonium of early generation, metaphase, polar new. 
Fig. 16. Same stage, lateral new. 
Fig. 17. Spermatogonium of last generation, quiescent state. 
Fig. 18. Spermatogonium of last generation, polar new, metaphase. 
Fig. 19. Same stage, lateral new. 
Figs. 20 — 23. Spermatogonia, polar views, metaphase. 
Fig. 24. Spermatogonium from smear preparation. 
Figs. 25 — 28. Oögonia, metaphase, polar view. 
Figs. 29— 43. Enche nopa curvata. 
Fig. 29. Section through small spheroidal cyst of spermatogonia. x 656. 
Figs. 30 — 31. Two optical sections of single quiescent spennatogonium from 
section shown in Figure 29. 
Figs. 32 — 36. Spermatogonia, metaphase, polar view. 
Figs. 37 — 38. Oögonia, metaphase, polar new. 
Figs. 39 — 43. Tjqjes of cells degenerating during transition from last spermato- 
gonial generation to first spermatocytes. 
Fig. 44. Degenerating cell from E. hinotaia. 
Figs. 45 — 70. First (primary) spermatocytes of Enchenopa hinotaia. 
Fig. 45. Fine network of stage following last spemiatogonial division. The 
nucleoli plainly nsible. 
Fig. 46. Sh'ghtlv more advanced stage than Fig. 45. One deepl)’ staining tliread 
distinguishable. Nucleoli no longer nsible. 
Fig. 47. Early leptotene stage. One deeply staining thread is present. 
Fig. 48. Later leptotene stage. Deeply staining thread luiited at one end with 
a more granulär thread. 
Fig. 49. T}q)ical nucleus of leptotene stage. 
Figs. 50 — 52. The transition from the leptotene stage to the zygotene. Fig. 50 
shows a tendency toward a jmlar arrangement of the threads. 
Fig. 53. Begimiing of the bouquet stage. 
Fig. 54. Bouquet stage, xy pair united end to end. 
Fig. 55. Bouquet stage, xy pair laterally approximated. Macrochromosome loop 
at the right. 
Fig. 56. Ends of loops and xy pair in bouquet stage, viewed from positive pole. 
