1292 Bulletin 47, Ihiited States National Musetim. 



Body oblong, usually more or less elevated; moutli wide, the maxillary 

 long and curved, reaching to below the eye, its tip extending to the poste- 

 rior end of the preorbital ; chin with a central groove behind the sym- 

 physis; lower jaw included; gill rakers moderate; no teeth on vomer or 

 palatines; teeth of the jaw conical, the outer series stronger, curved; lips 

 and inside of mouth posteriorly commonly bright rod or scarlet in life; 

 preopercle serrate, with no recurved hooks below ; soft parts of the ver- 

 tical fins completely covered with scales; scales about lateral line in series 

 not parallel with lateral liue; a marked angle formed at the junction of 

 the spinous and soft parts of the dorsal; dorsal spines 12 or 11; second 

 anal spine enlarged, generally large and longer than the third; caudal 

 forked, {al/iux, blood; ovXov, the singular of ovXa, the gums.) 



a. Scales below lateral line anteriorly not especially enlarged. 

 b. Scales above lateral line anteriorly not much enlarged. 



c. Maxillary 2^ to 2J in head, not reaching center of eye (in adult). 



d. Back and sides without yellow or blue stripes; each scale above witli 



a median blackish spot, these forming undulating lines (spots rarely 



obsolete in adult, obscure or wanting in young) ; maxillary 2h to 25 



in head. 



e. Scales in a vertical row from hrst dorsal spine to lateral liue, 7 or 



8 (9 in oblique series). 



/. Mouth rather small, maxillary scarcely reaching to front of 



eye; back elevated; preorbital very deep, its least breadth 



greater than length of eye in adult, 4^ to 4| in head in 



young; second anal spine not reaching to tip of last ray ; 



snout long and pointed, 24 to 2J in head. 



g. Sides with about 6 dark vertical bars ; sides of head with 



blackish spots like those of body; dorsal spines not 



graduated; second anal spine when depressed not 



reaching tip of last spine. Head 3; depth 2=; scales 



7-51-14; D.XII, 17; A. Ill, 9. sexfasciatum, 1662 



gg. Sides without dark bars ; head unspotted ; dorsal spines 



graduated; second anal spine, when depressed, 



reaching beyond tip of last spine. Head 3; depth 



2i; D. XII, 16; A. Ill, 7; scales 7 (or8)-46 to 48-16. 



ALBUM, 1663. 



//. Mouth rather large, maxillary reaching front of pupil; back 



little elevated ; preorbital rather narrow, its least width 



5 in head; second anal spine reaching tip of last ray; 



snout rather long and pointed, 2^ in head ; back and sides 



with 4 or 5 black longitudinal streaks, which disappear 



only in very old examples. Depth 2J. 



MACROSTOMUM, 1664. 



ee. Scales in a vertical row from first dorsal spine to the lateral line, 



5 or 6. 



h. Series of scales from scapular scale extending backward to 



front of soft dorsal; snout rather long and pointed; 



mouth small; the maxillary 2J to 3 in head; pectoral tins 



long, I length of head; black spots on sides coalescing in 



continuous stripes. bonariense, 1665. 



hh. Series of scales from scapular scale not extending farther 



backward than the middle of spinous dorsal; snout 



shorter, not very acute; mouth larger, the maxillary 



about 2i in head; premaxillary processes about 3 in 



head ; dark spots on scales not coalescent. 



