312 W. BLAXLAND BENHAM. 
Fic. 29.—Diagrammatic obliquely longitudinal section through the aper- 
ture of prostate, combined from a series of sections. Pe. d. Penial duct. 
pr.p. Prostate pore. pe. s, Sac with penial chete. a. The longer; 4, the 
reserve penial cheta. p.s. p. Pore of this sac. 
Fic. 30.—A spermatheca, showing its various parts. 
Fig. 31.—A longitudinal section through a spermatheca (combined from a 
series of sections). «a, 4, c, d point to the regions which are represented more 
highly magnified in Fig. 32. a. The duct of spermatheca. app. The diver- 
ticulum. 4. Wall of the sac. c.m. Circular muscle of the body-wall. c¢. d 
Epithelium of appendix. /y. m. Longitudinal muscle of the body-wall. mus. 
Muscular coat of the diverticulum. sep¢. Septum vitt/rx. spoa. Spermatozoa 
in the diverticulum, and a few in the sac. v. ch. Ventral chete. 2. Granular 
secretion in the sac. 
Fic. 32.—Portions of epithelium of the spermatheca from different regions. 
a. From duct. g. Glandular cells. py. Nuclei of non-glandular cells. 4. From 
the wall of the sac. m. Cells which have probably just discharged their con- 
tents (x). #. Cells not quite fully developed. c. From the diverticulum. 
k. Nucleus of the interstitial cell. d. Also from the diverticulum, showing 
spermatozoa attached to the cells by (4.) their heads. ¢. Tails of spermatozoa. 
