24 SPECIAL ANATOMY OF THE TERRESTRIAL 



blematical character. In L. agrestis, it is an elongated, 

 conical or;.^an, with a protuberant base. Its summit is 

 divided into three coeca ; 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 X. 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. caynpestris 

 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 large, 

 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. 



