% Art. 4.— T. Kaburaki : 



the licck to the posterior extremity, wliich is scaicely raised abov^e 

 the general level. AVlieii fully extended the worm measured 20 

 mm. in length and 0-75 mm. in l>readtli. 



The animal is, dorsally, of a bright orange colour, except the 

 head which is more or less reddish. Ventrally, the colour is much 

 lighter than that of the dorsal surface. 



Numerous eye-spots are present in a row or rows all round the 

 margin of the head. 



The mouth-opening is situated nearly at the hind end of the 

 second third of the body, opening into the peripharyngeal cavity 

 with the pharynx plicated. 



The sexual organs were not yet developed in the specimen 

 examind. 



The epidermis consists of a layer of columnar cells, which are 

 much higher on the dorsal side than on the ventral, and contains 

 small spindle-like rhabdites in sparse numbers, wedged in between 

 the cells. Deep below the epidermis, in the parenchyme, are found 

 such rhabdites as are still contained in their mother-cells. There 

 are numerous glands, situated in the parenchyme, opening to the 

 exterior on the surface of tlie sole. 



The superficial muscular system underlying the basement 

 membrane is composed of two layei's, outer circular and inner 

 longitudinal. The deep muscular system is well developed all round 

 in the parenchyme as a thick and continuous sheet, consisting of 

 two principal sets of longitudinal and ciicular fibres. 



The mouth-opening is situated near the centre of the peri- 

 pharyngeal chamber, in which is hanging the plicated pharynx 

 from above. The gut trui]ks are provided with numerous branches 

 which are bifurcated. 



The brain forms a meshwork, from which posteriorly start 

 two longitudinal nerye cords, connected together by numerous 

 transverse commissures and giving off numerous lateral [»ranches. 



Genus Bipaliiiipi Stimpson. 



5. liipaliuni reitosum, n. sp. 



(PI, I., Fig. 12.— Text Figs. 2, 3.) 



Two specimens of this species were obtained by me in July, 

 1916, on the stone wall of the Mii Temple in Otsu. 



