II. REFERENCES TO THE PLATES AND FIGURES. 61 



c. Thickening of the cell- wall at the place of division of the secondary cells. 



Fig. 3. a. Distal portion of the primary cell of Eccrina longa, filled with granules and globules. 



b. First secondary cell, filled with granules. 



c. Outline of second secondary cell. 



d. Arthromilus growing from Eccrina. 



e. Its nucleus of attachment. 



f. A tuft of Cladophytum. 



g. Its nucleus of attachment. 



Fig. 4. Terminal secondary cells of the same thallus as Fig. 3. 



a. Filled with granules. 



b. In outline. 



Fig. 5. Secondary cells of Eccrina longa. 



a. In outline. 



b. Filled with granules. 



c. Detached cells, which appear to adhere by one end to the sides of the parent thallus. 

 Fig. 6. Three detached secondary cells. 



a. Filled with globules and granules. 



b. In outline. 



Fig. 7. Young thallus of Eccrina longa distended with globules; its upper part considerably dilated. 

 Figs. 813. Different forms assumed by the young of Eccrina, longa. 



Fig. 8. 5 } T inch long; 9, T i 5 inch; 10, -ji T inch; 11, ^^ inch; 12, 5 ij inch; 13, more highly 

 magnified, yi^ inch. 



Fig. 14. Arthromilus cristatus, from the large intestine of Julus marginatus. 



a. Nucleus of origin. 



b. Mucous membrane. 



c. Consolidated articuli. 



d. Spores. 



e. Cladopliytum. 



Fig. 15. Portion of another individual, more highly magnified. 



a. Developing sporules. 



b. Ripe sporules. 



PLATE VI. 



Fig. 1. An individual of Ascaris infeela, which had a large number of thalli of Entcrobryus clcgans 

 growing upon it. 



a. Buccal organ. 



b. Gizzard. 



c. Intestine. 



d. Rectum. 



e. Anus. 



f. Ovary. 



g. Generative aperture. 



h. Bunches of Arihromitus growing upon the thalli of Enterobryut. 

 Fig. 2. Anterior portion of the body of Ascaris infecta, with three thalli of E. elegans growing upon it. 



a. Lobes of the mouth. 



b. Buccal organ. 



c. Gizzard. 



d. Commencement of intestine. 



e. Ganglia. 



f. Primary cells of Enterobryus, filled with granules and globules, and having very numerous bunches 



of Arihromitus growing upon them. 



g. Pedicle of attachment. 

 9 



