18 



AUT. in. — R. TANAKA : 



MEASUREMENTS OF THE SPECIMEN. 



Total length exclusive of caudal 



Total length inclusive of caudal 



Height of body at insertion of pectoral. 



Height of body at insertion of anal 



Length of head 



Width of head 



Horizontal diameter of eye 



Interor])ital width 



Length of snout 



Length of maxillary 



Breadth of posterior end of maxillary... 

 Length of the longest ray of jiectoral... 



Width of base of pectoral 



Length of ventral 



Distance from tip of snout to vent 



Distance from tip of snout to anal 



Number of rays of dorsal 



Number of rays of anal 



Number of rays of pectoral 



Number of branchiostegals 



Number of crill-rakers on first gill-arch. 



117.5 cm 

 125.0 

 20.7 



in.3 



23.5 

 11.0 



2.2 



5.4 



5.8 

 12.0 



3.4 

 11.6 



G.O 

 12.5 

 44.0 

 47.0 



140 



106 

 28 

 8 

 3 or 4+8,8 



Ceratias (Paraceratias, n. subg.) mitsukurii, n. sp. 



PI. IL, fiff. 3. 



The single specimen belonging to tlie family Ceratiidce and 

 on which this now species is based, seems to deserve a, new 

 su])genus within the genus Ceratias rather than being erected into 



