7« 



S. VOSI II da : 



outline is distinctly angular. Length 34 — 40/4; breadth 20 — 30//; diameter 

 of operculum 14/*. 



The new frog-distomc is apparently a hitherto unrecorded species. It 

 bears some resemblance to Styplilodora Looss in the arrangement of 

 genital organs. Still nearer it seems to stand to Rnodiotrcma Looss, 

 without being identifiable with any of the known species of that genus. It 

 differs from any species of the genus chiefly in three respects, viz. in the 

 excretory system, in the large number of yolk-follicles and in the structure 

 of cirrus-pouch. It shall go by the name of Rnodiotrcma rngo- 

 caudatum. 



