PLATE III. 



Fig. I. Semionotus agassisii (W. C. Redf.). Head, natural size. 



Fr, frontal; Pa, parietal; S.t, supratemporal; Sq, squamosal; P. or, 

 postorbital; Op, operculum; P. op, preoperculum; Lop, interopercu- 

 lum; S.op, suboperculum. 

 " 2. Seminonotus agassisii (W. C. Redf.). Lower flank scale, showing ar- 

 ticular process or "peg," natural size. 

 " 3. Semionotus sp. Lower flank scales, showing double articula- 

 tion. XVi. 

 " 4. Semionotus sp. Premaxillse, natural size. 

 " 5. Semionotus ovatus (W. C. Redf.). Dorsal fin, twice natural size. 



All the figures of this plate are reproduced after Eaton, loc cit., (1903). 



(108) 



