88 



CALIFORNIA ACADEMY OF SCIENCES 

 Measurements in Hundredths of Length without Caudal. 



Type 



Length without caudal in mm 



Head 



Depth 



Eye 



Snout 



Maxillary 



Longest dorsal rays 



Longest anal rays 



Length of pectoral 



Length of caudal 



Number of scales 



Number of dorsal rays 



Number of anal rays 



Number of gill-rakers 



24 



33 

 36 



111,44 

 111,42 

 4+16 



23 

 32i 



34 

 III 

 111,44 

 111,42 

 4+14 



187 

 28 

 37i 

 5i 



1\ 



8 

 20 

 21 

 32 



35 

 108 



"1,45 

 "1,43 

 4+15 



192 



28i 



39 

 5i 

 71 



8i 



22 



23 



33 



35 

 109 

 111,44 

 111,42 

 4+14 



158. Peprilus medius {Peters). 



The Panama record of this species (Jordan, 1885, p. 375) needs verification. 

 The specimens obtained may have belonged to one of the forms above recorded, 

 both of which were at that time unknown. Only tlie type of P. medius is now 

 extant. 



Family CHEILODIPTERID^. 

 159. Apogon dovii Gilnther. 



Abundant about the rocky islands in Panama Bay. 



The sjJecies varies in color from light to dark red, with much or little black 

 pigment. The caudal may be translucent or blackish, the soft dorsal is translucent, 

 or may be tipped with black, or may be largely black with only the posterior rays 

 whitish. The anal and ventral fins may also be translucent, or with the terminal 

 portions more or less largely black. Young specimens are marked with a very con- 

 spicuous round or elliptical black spot on the end of the caudal peduncle, and a rather 

 poorly-defined dusky streak around the snout and across the opercle. The streak 

 wholly disappears and the caudal spot becomes very faint and diffuse with age. 



