186 J. 1. CUNNINGHAM. 
DESCRIPTION OF PLATE IV, 
Illustrating Mr. J. T. Cunningham’s paper on “ Spermato- 
genesis in Myxine glutinosa.” 
Fies. 1,2, and 3.—Elements seen when a piece of the fresh testis is teased 
on the slide; each figure from a different specimen. Drawn with Abbé’s 
camera, Zeiss EH, oc. 3. 
All the remaining figures drawn with the aid of Abbé’s camera, under the 
combination Zeiss F, oc. 3. 
Fic. 4.—Three spermatocytes with resting nuclei, from an unripe follicle. 
Fic. 5.—Spermatocytes with nuclei in the skein stage, from an unripe 
follicle. 
Fic. 6.—Spermatocytes with dividing nuclei, from a follicle in which the 
spermatocytes were separate from one another, but which contained no 
spermatozoa. 
Fics. 7, 8, and 9 are various elements seen in a single ripe follicle in one 
section. Figs. 4 and 5, spermatocytes with resting nuclei. Fig. 6, stages of 
spermatogenesis. 
Fic. 10.—Elements seen in certain follicles from which the spermatozoa 
have probably escaped. 
Fic. 11.—Elements seen in a ripe follicle in another section from another 
specimen. 
Fic. 12.—Elements from another ripe follicle. 
Fic. 13.—Portion of the connective-tissue partition between two unripe 
follicles, with the follicular epithelium on either side of it. 
Fie. 14.—Portion of a section of a young testis. s.c. Stroma-cells. g. ¢. 
Germ-cells. 
Fic. 15.—Portion of a section of a somewhat older testis. ss. ¢., g. ¢., as 
before. 
