26 ART. 9. — K. KISHINOUYE : 



Favonia niiyponicfu ". sp. 

 {V\. V, Fi;^. 25.) 



The iimbrelki is bell-sliaped, a little higher than broad. The 

 stomach cavity is cubical with quadrate base. The genital glands 

 arc four vertically folded sacs growing out from the stomach -wall, 

 and run along the radial canals for more than half the length 

 of these canals. Tiie sacs are broadest near the stomach and 

 gradually diminish in breadth towards the abaxial end. The four 

 oral styles are twice longer than the œsophagus, and are dichoto- 

 mously branched about ten times. The four tentacular bulbs are 

 crescent-shaped and abaxially reflexed. In each tentacular bulb, 

 there are about fifty tentacles arranged in two rows. In the 

 middle part of each tentacular bulb, there are two short, stiff, 

 club-shaped, aborally directed tentacles. 



The umbrella is 17 mm. high and 15 mm. broad. The 

 genital glands are bluish in the male, pale yellowish in the female. 

 The tentacular bulbs are orange-colored, ocelli brown, and distal 

 end of tentacles light orange. 



Found in tjie Bays of Tokyo and of Mikawa. Very abun- 

 dant in spring. 



Favonia sulcata , n. sj). 

 (PI. V, Fig. 26.) 



The umbrella is bell-shaped, a little higher than broad, and 

 more or less quadrate in cross-section. There are four, very nar- 

 row, interradial, longitudinal grooves in the lower half of the 

 exumbrella. The oral styles are well developed, longer than 



