Cyclosalpa retracta, a new Salpoid from the 

 coast of Japan. 



BY 



Wm E. Riîter. 



The unique species here described is contained in the zoological 

 collections of the Tokyo Imperial University. It was taken in the Suruga 

 Hay by a dredge, that had been down to a depth of 700 hiro (about 550 

 fathoms). Unfortunately there is but a single specimen known. This, 

 however, is in a good state of preservation, and so strikingly different is it 

 in several particulars from any species of the group hitherto described that 

 there can be no risk in basing an outline description on the one individual. 



Fig. I . Cyclosalpa. rétracta, dorsal view 

 Kv.gn. g. 



l_j . .r . 



e. oesophagus, eii'l endostyle, s;. gill, gn. ganglion, h. hypophysis, int intestine, p. br. b. 

 peripharyngeal bawl, st. stomach. 



