THE GEPHYREA OF JAPAN. ^^ 



FunakHwa in the Province of Ugo, Misaki, Habu on Oshiina 

 (Izu Province), and Tanegashima, a small island near Kagoshima. 

 The species lives under alga^ covering rocks along the tide-marks 



ECHIUROIDEA. 



Genui ECHIURUS. 

 ECHIURUS UNICINCTUS, Von Dräsche. 



Selenka (29), 1885, 1). 385. 

 RiETSCH (26), 1886, 11. 188. 

 Shipley (31), 1899, 77. 344. 

 Embleton (8), 1900, p. 77. 



Shipley's diagnosis runs as follows : 



" Length of body averages 8.5 cm. ; length of proboscis, ^-^ 



when contracted. Color, bright yellowish brown. Papillœ 

 uniform in size, only arranged in transverse rows in special places, 

 e.g., near the hooks. Single circlet of bristles, usually 11, but 

 any number from 9-13 has been found. Circular muscles consist 

 of 200 bundles frequently anastomosing. Nephridia, two pairs, 

 with spirally coiled internal openings." 



This species is the most abundant Echiuroid in Japan, and 

 is the only representative of the genus in this part of the world. 

 The worms are known to live in shallow sandy inlets along the 



mm 



