Terrestrial Plauarians from Jai>anese Territorier. 7 



vitelline glands are composed of closely pncked, large cells, ex- 

 tensively filling up the interspaces between the branches of the 

 intestine. The mode of their connexion with the oviduct is 

 effected by means of the short branches of the latter. In the 

 neighbourhood of the genital opening the oviduct nears tlie median 

 line, rising upwards at the same time, to unite into a common 

 canal, the glandular canal, which pursues a forward course, finally 

 opening from behind into the penis-sheath. The wall of the 

 oviduct is made up of a ciliated epithelium, external to which is a 

 thin muscular coating. 



In its course the glandular canal gives off a branch which 

 stands in communication with the right posterior trunk of the 

 intestine, so that there is, as in some land planarians, '^ a genito- 

 intestinal canal. The canal is constructed in the same manner as 

 the glandular canal, and is lined with an epithelium made up of 

 ciliated columnar cells, outside this is a muscular coating. 



Family Bipaliidœ von Geaff. 



Genus Peroceiilialus von Geaff. 



4. Peroeephftlus fulfils, n. sp. 



(PI. L. Fig. 3.) 



Only a single specimen representing this new species was 

 procured by the late Professor I.jjma in July, 188(3, un the stone 

 wall covered with the moss in Nikko. 



According to the late Professor Ljima's notes and sketches 

 taken from the living worm, the head presented a lunar shape and 

 merged into the trunk, from whicli it was speparated by a slight 

 neck-like narrowing. In the preserved state, the head lobes make 

 it very difiicult to distinguish. The trunk is nearl}' oval in cross 

 section and almost uniformly bioad for the most part of its length, 

 but is tapering in the hind parts down to the bluntly pointed 

 extremity. Along the mid-ventral line runs the slender sole from 



1) See tlie author's report " On the Terrt striai Planarians from the Islands of Mauritius and 

 Rodrigues, with a Note upon the Canal connecting- the Female Genital Organ with the In- 

 testine." (32). 



