OBSERVATION'S OX FliKSH-VVA'l'ËK FoLYZOA. l'lî> 



Plate XIX. 



Fig. 27. Nervous ganglion. 



Fig. 28. Saggittal section of the gatiglion. E x 2. 



Fig. 29, a, h, c. Diagrammatic Sections of the ganglion, showing 

 the extent of the ganglion caA'ity. 

 <T, sagittal, b, horizontal, c, frontal, sections. 



Fig. 30. Cross section of a lophophoral arm. D x 2. 



Fig. 31. Cross section of the fimiciiliis. F x 2. 



Fig. 32. Longitudinal section of the upper extremity of the funi- 

 culus. D x2. 



Fig. 33. Longitudinal section of the lower extremity of the funi- 

 culus. D X 2. 



Fig. 31. Section of Ovary. F x 2. 



Fig. 35. Marginal spines of statoblast. F x 2. • 



Fig. 36. The Envelopingcell-layer of thestatoblastic content. F x 2. 



Figs. 37-15. Various «tages in the development of the sttitoblast. 

 37-39. Fx2. 40. I) x 2. 41-45. B x 4. 

 Fun. Funicular wall. Cyst. c. Cystogenous cells. Gr. m. 

 Granular cell-mass. Caps, chitinous capsule. Env. m. 

 Envelojung cellular membrane. 



Fig. 16. Section of a mature statoblast. B X 4. 



Fig. 16 A. A portion of the statoblastic content. F x -j. 



Plate XX. 



Figs. 17-52. ^'arious stages in the development of Polypide in the 

 statoblast. B x 4. 

 Prim. 1. Primitive lumen. 

 Bl. c. Floating cells. 



