60 KEFEEEiNCES TO THE PLATES AND FIGURES. II. 



c. Basement-membrane. 

 /. Eijitliclial cells. 

 Fig. 17. Do. geniculate, jj^ inch long. 



Fig. 18. Distal portion of an ultimate secondary cell of Enkruhryits elegans, filled with granules and a 

 few globules, and having a tuft of Cladophi/tum growing from the summit. 



Fi". 19. Proximal portion of the ultimate cell (a), and distal portion of the penultimate cell (i), of the 

 same individual as Fig. 18, filled with granules. 



Fig. 20. Proximal portion of the penultimate cell («), filled with granules, and distal portion of the pri- 

 mary cell (]>), filled with granules and globules. 



Fig. 21. Distal portion of an ultimate cell, filled with granules. 



Fig. 22. ProximaLportion of an ultimate cell, filled with granules [a), and distal portion of the penulti- 

 mate cell, filled with globules and granules (i). 



c. Point of division of the two secondary cells. 

 Fig. 23. Proximal portion of the penultimate cell (a), and distal portion of the primary cell Qi), filled 

 with granules and globules. 



f. Line of separation of the primary from the secondary cells. 

 Fig. 24. Distal extremity of a secondary cell, filled with granules. 



Fig. 25. Proximal extremity of the same cell, filled with granules (a), and distal portion of the primary 

 cell, filled with granules and a few globules (V). 



c. Line of separation between the primary and secondary cell. 

 Fig. 26. A young thallus of Eidcrohryiis atlcnuafus, having an abnormal bud-like prominence at the 

 attached extremity of the primary cell. Large globules distend its upper half; small ones its sigmoid 

 flexure, and protoplasma fills the attached end and the bud. Length j'j of an inch. 

 a. Primary cell. 

 I. Bud. 

 c. Pedicle. 

 Fig. 27. A bunch of Enteruhryiis attenuntus, in which the primary cells are of very nearly uniform 

 diameter throughout, growing from a portion of basement-membrane. Length 1 line. 



a. Principal cells, filled with globules, granules, and protoplasma; the lower portions, excepting one, in 



outline. 

 I. An individual, in which two principal cells grew from one pedicle. The only instance of the kind I 

 ever met with. 



c. Pedicle. 



d. Cladophjjtum. 



e. Basement-membrane. 



Fig. 28. Large bunch of Entrrohri/m dcjanx, growing from a portion of mucous membrane. 

 a. Primary cells. 

 h. Penultimate secondary cell. 



c. Ultimate secondary cell. 



d. Pedicle of attachment. 

 c. Thallus in outline. 



/ Bunches of Gladophylum comafiim. 

 (J. Basement-membrane. 

 h. Epithelial surface. 



PLATE V. 



Figs. 1, 2. Secondary cells of Earma hmja. All were filled with granular matter. 



Fig. 1. a. A distal extremity of the primary cell, filled with granules and globules. 



h. Outlines of .secondary cells. 



c. Secondary cell, filled with granules. 



Fig. 2. (/. Outlines of secondary cells. 



b. Secondary cells, filled with granules. 



