222 INTRODUCTION. 
latter with the duct of the generative bladder, where it 
receives a small duct from the duct of the latter organ, 
and then passes nearly to the external female orifice, 
where it turns abruptly forwards between the muscular 
peritoneum and the right edge of the podal disk, and 
continues this course to the head. It now turns abruptly 
backwards to the right, and again appears within the 
visceral cavity, and passes to the base of the penis. 
The penis is a conico-cylindroid, contorted organ, con- 
tained within a thin, muscular sheath. Its apex presents 
a small, round papilla, or glans ; and into its base is in- 
serted the retractor-muscle, which arises just anterior to 
the pulmonary cavity. The lower part of the preputial 
sheath of the penis is joined by the common duct of a 
highly developed, multifid vesicle. This latter organ 
consists of twenty-five long, narrow, cylindrical, blind 
tubes, contorted at their termination, and opening sepa- 
rately into a common tube, containing, in the specimen 
examined, attached to its bottom, a narrow, cylindroid 
organ, which, probably, may have been an uncalcified 
dart. 
The tube formed by the prreputium and the duct of 
the multifid vesicle, as previously mentioned, opens ex- 
teriorly immediately beneath the mouth. The ovary is 
small and unusually lobulated. The oviduct is a narrow, 
cylindrical tube, which winds forwards and then back 
again so as to form a double spiral, after which it makes 
a curve downwards, and is joined by the duct of the 
generative bladder. The latter organ is globular ; its 
