NOTES ON SOME JAPANESE FISTIES. 47 



differs from it in having 3 dorsal spines (instead of 10) ; head 

 hirger, and without scales on cheek. 



The genus is named for Mr. Alan Owston, in whose col- 

 lection the single specimen of the genus and species was found. 



Otvsfonia totoan'ensis^ n. sp. 



PI. IIL, fig. 1. 



Head 3g in total length to caudal base ; height of body at 

 insertion of ventral 3i ; snout 4î in head ; eye 2fi ; interorbital 

 6; length of maxillary 1Î. B. 6 ; D. Ill, 21; A. I, 14; V. 

 I, 5 ; P. I, 18 to 20 ; C. 17 ; number of scales in a longitudinal 

 series to caudal base öö to 60 ; same in a transverse series 

 counted downwards and forwards from the middle of dorsal base 

 to vent 24. 



Body elongate, compressed ; caudal peduncle also compressed. 

 Head rather small ; eye large, high, lateral ; interorbital rather 

 narrow, convex ; snout short ; the profile curved. Mouth directed 

 obliquely upwards ; jaws with slender, inwardly curved, incisor 

 or canine teeth in one row, placed at rather wide intervals ; a 

 slightly elevated knob on lower jaw armed with teeth in two rows, 

 fitting a depression of upper jaw ; no teeth on vomer and 

 palatines. Posterior part of maxillary broad, ending beneath 

 posterior rim of eye. Angle of preopercle serrated. Dorsal high, 

 slender, originating above scapular angle of opercle ; anal similar 

 to dorsal in form, originating vertical from tenth ray of dorsal ; 

 end of posterior ray of anal reaching caudal base, but that of 

 dorsal not reaching caudal ; pectoral moderate, its free margin 

 rounded ; its tip before vent ; ventrals approaching each other, 

 beneath posterior end of base of pectoral, its tip reaching fifth 



