208 50 



attached on either side somewhat upwardly; the hinder, somewhat larger, part of the sto- 

 mach transparent, it was rounded posteriorly, and from its hinder part the intestine 

 issues to the right. The belt of plates consisted of 28 faint lemon-coloured, rather 

 firm plates, partly alternating in height and length (figs. 8, 9), most of which were large; 

 they had a length of up to 2 , 5 mm by a height of up to (Mo™ 11 . The part of the stomach 

 behind the belt of plates was smooth. The short intestine was wider in its first part, 

 and showed several small pocket-like widenings arranged in a series (comp, the correspon- 

 ding organ in M. papulosa. 1. c. Taf. Ill, Fig. 15c); next the intestine passed arcuately 

 down, and then rose to the anus; it was provided with a strong longitudinal fold. — The 

 alimentary cavity was quite empty. 



The three principal liver branches were as those in the last-mentioned species 

 (comp. 1. c. Fig. 14). The two foremost branches which open into the stomach anteriorly, 

 were almost sessile, and had a thickness at the base of S"™; the left one was already at 

 the base connected with the long common liver-branch. This latter ran through the cavity 

 of the body towards the last large dorsal papilla 1 ); together with its ramified hepatic 

 tubes, and the papillär principal branches, as also the numerous round lobules of the 

 hermaphrodite gland, it is wrapped in felt-like, closely adhering connective tissue. The 

 axial principal branch is quite thin-walled, tapering posteriorly, covered all round with 

 close-standing lobules, which ramify from the base in a grapelike manner, and rise between 

 the globular hermaphrodite glandules for a great part covering these latter. The 5—6 

 thick branches rising on either side to the dorsal papillae, are of the same structure. The 

 continuation of these branches, the intrapapillar hepatic branchlets, reach scarcely farther 

 upward than half the length of the papillae ; below they are unbranched, and farther upward 

 they only give off a few short branches (comp. I.e. Fig. 18). 



On the foremost two thirds of the principal liver stem the numerous lobules of 

 the hermaphrodite gland were found, lying partly more deeply, partly ou the surface, 

 more or less wrapped by connective tissue and by closely adhesive hepatic lobules. The 

 lobules of the hermaphrodite gland are mostly globular, with a strong navel on one side, 

 and reach a diameter of up to l 1 ™; they are composed of closely pressed smaller globes, 

 the peripheric part of which contains eggs, the central part fully developed zoosperms 

 (comp. I.e. 1875. Taf. XLVII, Fig. 21, 22; Taf. XL VII I, Fig. 13). The duct of the herma- 

 phrodite gland appears anteriorly behind the pylorus, and runs to the anterior genital 

 mass which is situated to the right anteriorly (fig. 10). This mass is large, I O 1 ™ long 

 by a height of en™ and a thickness of 4™™, and the duct of the mucous gland with the 



') In the hinder paît of the body a Spionide was lying, or a length of 15 mm, by a diameter of 

 0'75 mm, with the head attached in the region of the attachment of the last dorsal papilla. 



