4-g • Art. 9. — M. Yeri and T. Kaburaki 



With accessory seminal vesicle. Vagina bulbosa unarmed. Accessory 



vesicle of vagina large Genus Paraplanocera. 



Body broadly elliptical, with frilled margin. Colour olive-buffy, dotted 

 irregularly with a large number of minute milky white spots, intermingled 

 with some others of a dark brownish colour. Besides, there exist all along 

 the body margin'numerous minute yellow and white dots m a single or more 

 rows. Tentacular eye-spots in two complete circular groups ; cerebral eye- 

 spots in two distinct elongate clusters 11. P. misakierms. p. 23. 



//. 3 With penis. 



< . ' Accessory vesicle of vagina single. 



Tentacles indistinct. With true seminal vesicle. Prostate dorsal in 



position. Penis unarmed Genus Pseudostylochiis. 



c. 5 Ground colour buffy. 



c. 6 Body oval, uniformly dotted all over with minute brown spots. 

 Tentacular eye-spots in two irregular compact groups ; cerebral eye-spots 



irregularly scattered over brain region in two lateral groups 



' 12. P. takeshitai. p. 26. 



d. 6 Body broadly, oval, densely dotted with minute brownish orange 

 pigments. Tentacular eye-spots in two irregular compact clusters ; cerebral 



eye-spcts in two elongate tracts 13. P. fulvus. p. 28. 



d. 5 Ground colour deep olive-buffy. 



Body oval or elliptical, dotted all over with minute dark greenish 



pigments. Arrangement of eye-spots as in the preceding species 



14. P. obscunts. p. 30. 



f. A Accessory vesicle of vagina paired. 



Tentacles distinct. With true seminal vesicle. Prostate dorsal in 

 position, opening at apex of penis together with ejaculatory duct. Penis 



unarmed Genus CalUoplana. 



Body oval, with frilled margin, of a velvety black colour, bordered all 

 round with a narrow band of tawny brown just inside the colourless margin. 

 Tentacular eye-spots forming a group in the basal parts of each tentacle ; 



cerebral eye-spots in two elongate tracts 15. C. marginata. p. 32. 



B. With ventral sucker Suborder Cotylea. 



a. 1 With Marginal tentacles. Intestinal branches forming an anastomosing 

 . . system. 



a? Tentacles appear as marginal folds ; pharynx folded ; numerous gut branches. 

 a? Witli papilla; aU over dorsal surface. Tentacles sharply pointed. Male 



copulatory organs paired Genus I'hysanozoon. 



Body broadly oval, purplish gray or yellowish purple in colour, with a 



whitish or yellowish median stripe 16. Th. brocchii. p. 34. 



6. 8 Without dorsal papilla'. 



