GILBERT AND STAEKS — FISHES OF PANAMA BAY 



65 



colorless tips. In one sjiecimen the ventrals are immaculate, in the other a slightly- 

 dusky tinge is present. The three specimens of M. pmcilopus have the tips of the 

 ventrals darker, running from dusky to black. There is a dark pigment spot above 

 pupil in M. occidentalis, which is absent or very slightly dusky in M. poecilopus. 



Measurements in Hundredths of Length without Caudal. 



Length without caudal in mm... 



Head 



Depth 



Eye 



Snout 



Length of pectoral 



Length of ventral 



Height of soft dorsal 



Height of anal 



Length of caudal 



Number of dorsal rays 



Number of anal rays 



Scales 



45 

 35 

 37 

 15 



7i 



22 

 22 

 l8 



l8 

 24 



x-i, 14 



IV, 12 

 3-40-7 



46 



35 

 36 

 15 

 1\ 

 24 

 23 

 16 

 16 



24 



x-i, 14 



IV, 12 



3-39-7 



124. Myripristis poecilopus (Gill). 



Three specimens taken. 



Very small villiform teeth on jaws, vomer, and palatines; the imlatine patches 

 very long and narrow, the vomerine patch anchor-shaped, its length about three 

 times its width across lateral arms. The median backwardly extending limb is 

 narrow and pointed. 



Color of back slaty brown, passing into bright, iridescent silvery at the 

 upper part of the band of scales which bears the lateral line. Upper end of opercle 

 with bluish reflections. Directly below the lateral line is a narrow, straight, dusky 

 streak, commencing three or four scales from gill-opening and ending a little behind 

 tip of pectoral. Tips of ventrals varying from slightly dusky to black. Base of 

 caudal with a dusky band. Spinous dorsal dark or nearly black. Other fins 

 colorless. 



