26 AKT. S.— S. TANAKA : DESCRIPTIONS OF ONE NEW 



parts greatly depressed. Head depressed. Eye lateral, high. 

 Interorbital wide, flat. Snout pointed in profile, rounded when 

 viewed from above. Nostrils close together, just in front of eye. 

 Mouth subinferior, lower jaw included ; maxillary extending to 

 vertical from anterior margin of iris of eye ; lips broad. Teeth 

 in jaws villiform, in several rows anteriorly, but in one row 

 laterally. Tongue free anteriorly, broadly rounded at tip. Gill- 

 openings lateral, isthmus broad across. Dorsal inserted at the 

 beginning of the last fourth of body-length as measured 

 to root of middle caudal rays ; its hind end adnate to body by 

 a membrane a very short distance before base of caudal. Anal 

 also posteriorly adnate to body by a membrane in the vertical 

 of the adnate membrane of dorsal ; both anal and dorsal reach- 

 ing base of caudal when folded posteriorly. Pectoral extending 

 beyond posterior end of ventral disc. Ventral extending to 

 middle of ventral disc. Caudal rounded ])osteriorly. 



Colour in alcohol reddish yellow, paler beneath ; vertical 

 fins dark ; caudal yellow, darker posteriorly. Pectoral as well as 

 ventral yellowish. No markings. 



The species is very closely allied to Aspasma minima (Do- 

 deelein), but differs from it in having vertical fins adnate to 

 body very close to base of caudal, in the much wider body which 

 abruptly narrows in front and behind (in miîiima, the body 

 gently narrows both anteriorly and posteriorly from the posterior 

 part of head which is the widest part of body), and in the 

 shorter ventral (in minima, ventral fins extend to near posterior 

 margin of disc). 



The type, which is the only specimen as yet acquired, was 

 taken at Kodsushima (one of the Seven Islands of Idsu) ; it is 

 registered in the University collection under No. 2158. 



