GILBERT AND STARKS — FISHES OF PANAMA BAY 



1)0 



Mecisurements in Hundredths of Length without Caudal. 



Lenjjili in inin. without projecting lower jaw or 

 caudal 



IIcucl wilhimt lower jaw 



Depth 



Eye 



IiUcrorliital (hone only) 



Maxillary 



Tiiinl dorsal sjiine 



Fourth dorsal spine 



Fifth dorsal spine 



Second anal spine 



First anal ray 



Second dorsal ray 



Pectoral 



Ventral 



Caudal 



Caudal peduncle (height) 



Vent from front of anal 



Distance from anal to base of ventral spine 



Longest gill-rakers 



242 



222 



2 J 2 



1 61 



17J 



Family SERRANIDyE. 

 166. Petrometopon panamensis (Steindachner) . 



This species is seldom brought to the market, though it is very aljundaiit about 

 the islands in Panama Hay. 



The excavation in the frontal bones for the reception of the posterior processes 

 of the premaxillaries is not so deep .as in P. guttatus. It more nearly resembles in 

 this respect Epinephelus loiiti, as figured by Boulengcr (1805, p. 173). 



To the type description we add the following range of measurements, taken 

 from specimens 19 to 28 cm. in length: Head 2^ to 2^ in length, without caudal. 

 Eye 5[ to 6 in head; interorbital width (bone) 9,V; snout 3;,' to 4. The fin formula 

 seems to be constant as described: Dorsal IX, 14; anal III, 8. The small canines 

 anteriorly in each jaw are sometimes paired on one or both sides. 



