194 THE CHICAGO ACADEMY OF SCIENCES. 
Genitalia (Fig. 42): Testicle round or oval, partially 
concealed by the liver, brown in color and apparently com- 
Z ee 
hg ( os wy 
Tm 
Fic, 42. 
Genitalia of LIMAX MAXIMUS Linné. (After Scharff.) ag, albumin- 
iparous gland; hg, ovotestis; hd, hermaphrodite duct (epididymis); n, pros- 
tate gland; os, uterine portion of hermaphrodite duct; sp, vas deferens; 
rm, retractor muscle; ov, oviduct; p, penis; rec, receptaculum seminis. 
posed of rounded acini (lobulated in favus); epididymis an .- 
undulating tube leading from the testicle to the inner side of 
the junction of the ovary with the prostate gland, and opening 
into a groove in the oviduct, which is continuous at its inferior 
extremity with the vas deferens; prostate gland whitish, stri- 
ated ‘in appearance, occupying the inner side of the whole 
length of the oviduct; vas deferens comparatively short, pass- 
ing from the prostate gland to the penis, in some forms (maz- 
mus, flavus, etc.) joining the latter at its summit, and in others 
(agrestis and campestris) at its base; penis generally long, cylin- 
droid and irregular, lying at the right anterior part of the vis- 
ceral cavity, and joining at its termination a short cloaca; a re- 
tractor muscle is inserted into its summit, which arises from 
the muscular investment of the visceral cavity, posterior to the 
position of the pulmonary cavity; in some species the penis 
