ArrENDICULARIA OF JAPANESE WATERS. 



testis large and elliptical; the two organs separated 

 from each other by a. wide intervening space. 



The inner surface of the lip is provided with two rows of 

 cilia and two large tactile cells. The first row of cilia forms a 

 ring situated at the middle of lip (cr., fig. 8, PI. L). The 

 cilia themselves are placed on the apex of an annular membranous 

 ridge, the height of which varies with the length of the lip and is 

 highest in the dorsal part. The second row of cilia is found in 

 the antero-dorsal portion of endostyle {src, fig. 8, PI. L). The 

 two tactile cells are on the dorsal lateral wall, in the same 

 vertical plane as the second row of cilia [ta., fig. 8, PI. I.). 



The cells of the wall of stomach project outward and make 

 the surface of the latter quite uneven. 



The tail is wide and gradually tapers to the end. Its 

 musculature is narrow and in breadth scarcely surpasses that of 

 chorda. 



The average length of my larger specimens is 1235 // iu trunk 

 and 2450 u in tail. The widest part of the tail measures 420 /j. 

 and that of its musculature 10 /i across. 



2. Frltillaria pellucida Busch (1851). 

 PL L, figs. 9-14. 



Trunk with two large processes at the posterior 

 end. »Stomach and rectum in transverse position, the 

 former to the left of the latter. Spiracle and outer 

 opening of the atrial canal round and small. Tail 

 bifurcated at the end, and with two pairs of large 

 glandular cells on the front surface. 



