120 CALIFORNIA ACADEMY OF SCIENCES. 



PLATE XLIY. 



ECLIPIDRILUS FEIGIDUS. 



102. The ceutral part of the dissected prostate and male organ, as seen when mounted in gum-thus. This figure 



represents the narrow l^art of the prostate or tube, connecting the lower or glandular part with the upper or 

 storage part. The two spermducts are marked much more strongly than they aijpear and are more spread 

 or separated. The drawing rejiresents views at two different foci. Zeiss C. Eyep. 3, t. 165. a. the posterior 

 part or storage chamber in which the spermducts open at j. sp. The anterior end of this chamber is lined 

 by a very thick epithelium, which however rapidly diminishes in thickness backwards, h. the very narrow 

 part connecting the jjosterior storage chamber with the anterior prostate, c. the anterior prostate, out. 

 outer layers of the storage ehaml)er and i^rostate, surface views, lu. lumen of storage chamber, lum. lumen 

 of prostate, e]^. very thick epithelium at the anterior end of the storage chamber, j.sp. junction of sperm- 

 ducts and storage chamber. /. v. lateral longitudinal blood vessels, se. septum between xiv/xv. spt. sep- 

 tum between xv/xvi. spd. spermducts. hr. narrow part of prostate or bridge, r/l. glandular layer of 

 prostate, cpt. lining-epithelium of prostate, 



103. The anterior end of the storage chamber, dissected, mounted in gum-thus. The focus is set on the inner 



concave surface, showing the junction of spermducts and bridge with the storage chamber i)roper. s;/. the 

 pores where enter the two spermducts. outer, coats of muscles and small prostate glands of the storage 

 chamber, lir. bridge or narrow jjart of the prostate. 



104. Longitudinal section of the body-wall, showing posterior ciliated rosette, etc., behind the male pore. 



105. The inner end of the former more highly magnified. The letters indicate the same as iu the last figure. 



Only some of the larger prostate glands are figured. Zeiss C. Eyep. 3. 



106. A part of the former more highly magnified. Zeiss Horn. Im. 1-12, Eyep. 3-15.5. The letters indicate the same 



as iu tig. 104. This section is more parallel with the longitudinal axis of the organ. The cell walls of the 

 epithelial cells were not distinct, probably on account of maceration. 



