Description of Some Japanese Polyclad Turbellaria. J7 



situated slightly behind the posterior end of the second quarter of 

 body. 



The uteri, originating at the level of mouth, run backward 

 and join together, at a point nearly above the female genital open- 

 ing, to form the median egg-canal (ec). This proceeds forward for 

 a short distance, then bends downward, and after receiving numer- 

 ous shell glands (&g), opens into the spacious antrum femininum 

 {of) from front. The antrum is supplied with irregular outbulgings 

 and is lined with a ciliated epithelium. 



Family Plauoceridrc Lang. 



Genus JVeopltmocera^ n. gen. 



8. Xeojilanoeera r/ont/afa. n. sp. 



(PI. II., fig. 4.— Textfigs. 17-19). 



This new genus and species is based on five individuals 

 obtained at Shirahama and Sunosaki in Prov. Awa, at the low-tide 

 mark. 



Body -elongate-oval, nearly uniformly broad in the greater 

 part of its length, more broadly rounded at the anterior than at 

 the posterior end. 35 mm. long by 10 mm. broad. 



Dorsal surface of an olive- buffy colour, with an ill-defined 

 reddish median stripe over the pharynx. Ventral surface much 

 paler than the dorsal. 



17 Tentacles absent. Tentacular and 



cerebral eye- spots (textfig. 17) of each 



•** f .| side blend together; the former are on 



5. * V. the whole somewhat larger than the 



• ,.-f '•%;• latter; both forming an irregular 



cluster on either side of the median 



line. 



Mouth placed nearly in the centre 

 •"• (J •• of t lie ventral surface; pharyngeal 



Textfig. 17. Eye-spots of Keoplanocera pocket With numei'OUS ilTesularlv lobed 



e.Qngata. .. _ . 



diver icula, corresponding in a general 

 way to the folds of pharynx. 



