a sharper and more projecting snout, also the head does not 
appear less deep(on the contrary the example of M. opercularis 
has a much deeper head) and soft dorsal rays 27. M. furniert 
being thus very closely related, our Santo Domingo example 
shows: Head 3 1/3; depth 38; D. X, I, 28, 1; A. II, 8, 1; 
scahes along and above lateral line 81 to caudal base; 8 scales 
above lateral line to spinous dorsal origin, 8 also above 
soft dorsal origin and 9 below to spinous anal origin; 44 
sal scales; snout 3 2/5 in head; eye 43; maxillary 2 4/5; 
terorbital 3%. Maxillary to eye center. Rakers 9412, ii, 
lanceolate, 11/6 in filaments, which 2 in eye. Scales strong- 
ly ctenoid; basal radiating striae 7to 10; apical denticles 
50 to 34; circull moderate. Third dorsal spine strongly curved, 
1 3/5 in head. Length 174 mm, \ 
The Rio Janeiro example of M. opercularis is about 180 
mm, long, and is therefore conformable in size, +ts colora- 
tion agrees with the large, dried skin from Buenos Aires in the 
details set forth abowe. M. furnieri is described with short, 
dark, vertically inclined bars extending across the lateral line 
snd with many’ oblique ' “ee 5 9g apere them, 
Jonnius 
Hear 2 
Peeters a (Tsenudil,, fo 23; o° 0%, ba, 4 te. 26) 
i; A. II, 8, 13 scales 78 to 80 along and above lateral line to 
caudal base, with 10 to 12 more larger ones on latter; tubular 
scales 50 or 51 in lateral line to spinous dorsal origin, 10 
above to soft dorsal origin; 48 to 57 predorsal scales; snout 
