28 



ART. 7. S. TANAKA 



to below pupil. Gill rakers on first gill-arch 7 + 15, each raker 

 long, lanceolate. Gills 4i ; pseudobranchise developed ; gill 

 membranes not united, free from the isthmus. Pectoral rather 

 small, its tip not reaching ventral ; ventral small, outer end of its 

 base midway between inner end of base of pectoral and origin 

 of anal. Vent directly before origin of anal ; origin of dorsal a 

 short distance in front of that of anal ; posterior end of base of 

 dorsal also in front of that of anal ; caudal deeply forked ; both 

 lobes of equal length. 



Scales deciduous, rather large, a little elongate, the margin 

 smooth ; bases of fins with scaly sheath ; head entirely naked. 

 Lateral line runs straight a little nearer back than belly. 



Color in formalin : Scales bluish gray with darker posterior 

 edge ; head and all the fins blackish. 



Only a single specimen was ever obtained at Outside Okinose, 

 Sagami sea, during October, 1906. It is contained in Mr. 

 Owston's collection. 



MEASUREMENTS OF THE SPECIES. 



Total length to caudal base . 



Head 



Postorbital 2)ortion of head . 



Height of body 



Height of caudal jieduncle . 



Snout 



%e 



luterorbital 



Diameter of anterior nostril. 

 Diameter of posterior nostril. 

 Maxillary 



31.0 

 8.6 

 3.8 

 7.1 

 2.7 

 2.7 

 2.2 

 1.4 

 0.4 

 0.7 

 3.8 



