72 FISHES OF SINALOA. 445 
109. Mycteroperca boulengeri Jordan & Starks, n. sp. 
CABRILLA RaIzER. ‘‘ MANGROVE GROUPER.”’ 
Plate xxxviil. 
This species is found with J/ycteroperca jordani Jen- 
kins & Evermann in about equal abundance. Itreachesa 
much smaller size than any other species of JZycteroferca. 
It is in many ways an aberrant form, showing affinities 
with AAznzephelus. The anal fin is short, as in Hfzne- 
phelus, while the general appearance and coloration is 
that of AZycteroperca. ‘The structure of the skull shows 
that its affinities are with the latter. 
Head 2% in length; depth 22. Dorsal XI-14 or 15; 
anal III-9 or 10; scales about 90, 20 above and 42 below; 
snout 3% in head; maxillary 24; eye 5%; pectoral 134 ; 
ventral 13; longest anal ray 1% ; caudal 13; longest dor- 
sal spine 2%; gill-rakers short, about 6-++17, the longest. 
about # eye; longest dorsal ray 2 in head; length 10 
inches. 
Body short and deep, compressed. Head moderate, 
compressed, its profile not steep, nearly straight, a de- 
pression before eye. Upper canines moderate, the lower 
quite small. Nostrils small, well separated, the anterior 
slightly larger. Lower jaw very strongly projecting. 
Maxillary reaching opposite posterior edge of pupil. Pre- 
opercle slighily notched, the angle slightly salient, with 
enlarged teeth. Dorsal not deeply notched, the fourth 
spine not much elevated. Second dorsal high, not long, 
its angle not rounded. Caudal scarcely lunate, the upper 
lobe long, the lower truncate. Anal very high, strongly 
elevated; its posterior border incised, the anterior rounded. 
Pectoral and ventral moderate. Scales smoothish, not very 
small. 
Color olive gray, covered everywhere with oblong ir- 
regular markings of black, between which the ground 
