ON CTE N OPHOBES OF THE NEIGHBOURHOOD OF MISAKI. 469 



gonads develop in the lateral branches of meridional canals to the 

 extent of I mm. at their base. In two young specimens before me (1. 

 8.5 mm. and 10 mm.), the subtentacular ribs are moderately shorter 

 than the subpharyngeal ribs ; some ten branches arise from either side 

 of subtentacular canal and many of them join with the pharyngeal 

 canal. 



Colour. — An individual which I could examine in the fresh state 

 showed a conspicuous colouring. The ground colour of the entire 

 animal was faintly pinkish, which colour deepened towards the aboral 

 pole ; the narrower sides of body were dotted all over with conspicuous 

 round spots of a reddish brown ; the mouth Avas bordered by a band 

 of the same colour lighter in tone. On the broader body surface, the 

 aboral one-third was thickly dotted with round dark-orange spots, 

 which area gradually passed over, both above and below, into that of 

 the general ground colour. In formalin, the colours have entirely faded 

 away. 



Specimens examined. — One in the living state (1. 36.5 mm.), Misaki, 

 Dec. 30, 1917 ; one (1. 47 mm.) in alcohol, Tateyama Bay, April, 1899; 

 one (1. 56 mm.) in alcohol, Tateyama Bay. April, 1898; one (1. 28.5 

 mm.) in formalin, Misaki, Dec, 191 7 ; tw o (1. 8.5 mm. and io mm.) in 

 formalin, Misaki, Dec, 19 1 7. 



Remark. — In agreement with MOSER (1908, p. 27), it is with some 

 degree of hesitation that I refer the form under consideration to B 

 forskàlii. At any rate, there can be no question of its very close 

 relationship to that species. The fineness of the network of canalar 

 branches in relation to the smallness of body, and the deep tone of 

 colouration arc points in which the Japanese form does not seem to 

 agree quite with the descriptions of B. forskàlii. However, since this 

 species is known to vary considerably in those characters, it may be 

 advisable to have the Japanese form referred to it until definitely dis- 

 proved in the future. 



