78 PROCEEDINGS OF THE NATIONAL MUSEUM vol.85 



PTEROPELOR NORONHAI, new species 



Figure 34 



Depth 2% to 3; head 2^8 to 21/^, width 2. Snout 3 to 3i/io in head 

 from snout tip; eye 41/4 to 4%, 1% to II/2 in snout, greatly exceeds 

 interorbital ; maxilhiry reaches y^ to % in eye, expansion 11/2, length 

 2 in head from snout tip; bands of minute villiform teeth in jaws, 

 and triangular patch on vomer, none on palatines; interorbital 6 to 7, 

 deeply concave. Gill rakers 6+12, though only G lower developed, 

 others as rudiments ; length % of gill filaments, which 2 V2 hi eye. 



Pair of small nasal spines ; 3 pairs of supraorbital spines, as antero- 

 supraorbital pair, and 2 elevated postero-supraorbital pairs, of which 

 posterior much larger ; very small pair of coronal spines, then pair of 

 occipital and nuchal spines close; row of 3 postocular spines, fol- 



H.W. Fidel. 



Figure 34.- — Pteropelor noronhai, new genus, new species. Type. 



lowed by suprascapular spine; preorbital spine directed little back- 

 ward; suborbital stay with 3 spines, preceded by median preorbital 

 spine; 4 distinct spines on preopercle edge, second below end of 

 preorbital stay largest; 2 divergent opercular spines, opposite one 

 another; strong humeral spine. 



Scales 25 + 3 along course of lateral line (as computed to caudal 

 base) ; lateral line of only 5 or 6 scales anteriorly, sloping down 

 axially and tubes long, slender, and well exposed ; 4 or 5 scales above, 

 7 below. Head naked. Chest, breast, and prepectoral region naked. 

 Scales small on belly. Nasal tentacle long as eye ; supraorbital ten- 

 tacle nearly twice long as eye ; several filaments on each mandibular 

 ramus, anterior longest; long flap to preorbital spine. 



