SPECIAL ANATOMY. 219 
bleinatical character. In L. agrestis, it is an elongated, 
conical organ, with a protuberant base. Its summit is 
divided into three cceca ; the retractor muscle is 
inserted into its side. Upon the interior it presents 
several longitudinal folds of mucous membrane, and at 
its lower part, corresponding to the protuberance of the 
base, an oval, pointed papilla. In L. campestris, the 
organ is spiral, and has but a single pointed summit. 
The ovary is a large, white, semi-elliptic organ, usually 
more or less curved and lobulated, and situated at the 
summit of the oviduct. In L. agrestis and L. campestris 
it is always two-lobed, or double. The oviduct is a long, 
wide, soft, white, tortuous, sacculated tube, passing from 
the ovary to the vagina. The neck or portion immediately 
joining the vagina, commences usually where the prostate 
gland terminates, and is contracted to less than half the 
calibre of the-upper portion of the tube. Its interior sur- 
face exhibits a number of transverse folds, corresponding 
to the contractions which produce the sacculated appear- 
ance of the organ, and upon the inner side upon each 
side of the spermatic groove, or longitudinal fold. 
The generative bladder, in L. variegata, is a large 
pointed, oval receptacle, opening by a very short, wide 
tube or duct, into the vagina. In L. agrestis it is la 
elongated oval, and opens by a short duct into the angle 
formed by the junction of the vagina with the male 
portion of the generative apparatus. In L. campestris 
it is a small oval sac, with a longer, narrow duct, open- 
ing into the tube leading from the penis to the cloaca. 
