THE SHORE FISHES OF PERU 99 



b. Head short, 4.2 to 4.4 in length, its postorbital part especially short, 9.0 to 

 9.5 in length; eye large, 3.05 to 3.33 in head; pectoral with 11 or 12 rays, 

 occasionally 13; origin of anal about under middle of base of dorsal. 



curta (p. 100) 

 66. Head longer, 3.1 to 3.9 in length, its postorbital part longer, 5.7 to 6.3 in 

 length; eye smaller, 3.7 to 4.7 in head; pectoral with 13 to 15 rays; origin 

 of anal behind middle of base of dorsal. 

 c. Head long and low, its depth at joint of mandible about equal to its post- 

 orbital length; snout very long, piglike, projecting nearly its whole 

 length beyond tip of mandible, fully as long as eye in adults; origin of 

 anal well in advance of vertical from base of last ray of dorsal. 



naso (p. 101) 

 cc. Head deeper, its depth at joint of mandible equal to its postorbital length 

 and about half the eye; snout shorter, projecting about three-fourths its 

 length beyond mandible, notably shorter than eye except in very large 

 specimens; origin of anal generally under or behind base of last ray of 

 dorsal nasus (p. 103) 



ANCHOA PANAMENSIS (Steindachner) 



Engraulis panamensis Steindachner, 1875b, p. 39, Panama Bay (original de- 

 scription) . 



Stolephorus mundeolus Gilbert and Pierson, in Jordan and Evermann, 1898, p. 

 2812, Panama Bay (original description; compared with S. panamensis and 

 S. compressus) . 



Anchovia panamensis Meek and Hildebrand, 1923, p. 207, pi. 15, fig. 1, Panama 

 Bay (synonymy; description; relationship with A. compressa discussed). 



Anchovia mundeola Meek and Hildebrand, 1923, p. 208, pi. 15, fig. 2, Panama 

 Bay (synonymy; description; relationship with A. panamensis discussed). 



Anchoa panamensis Hildebrand, 1943a, p. 42, fig. 13 (synonymy; description; 

 reasons for synonymizing A. mundeola stated; range). 



Head 4.1; depth 4.3; D. 12; A. 32; P. 12; scales about 41. 



Body deep, strongly compressed, its greatest thickness notably less 

 than depth of caudal peduncle; ventral outline much more strongly 

 convex than the dorsal; chest and abdomen with a rather sharp edge; 

 head short, its depth at joint of mandible not quite equal to length of 

 head without snout; snout rather short, projecting about two-thirds 

 its length beyond tip of mandible, 6.5 in head; eye 3.25; postorbital 

 part of head 8.0 in length; maxillary rather pointed, reaching margin 

 of opercle (rather variable in shape and length in Panama specimens), 



1.2 in head; mandible 1.85 in head; cheek short and broad, only a 

 little longer than eye; gill rakers scarcely two-thirds length of eye, 20 

 on lower limb and 16 on the upper one of first arch; scales lost; dorsal 

 fin rather high anteriorly, the longest rays reaching far beyond tip of 

 last one if deflexed, origin of fin about equidistant from base of caudal 

 and middle of eye; anal long, its origin slightly behind that of dorsal, 

 its base 2.75 in length; ventral reaching a little more than halfway 

 to origin of anal, inserted shghtly nearer origin of anal than base of 

 pectoral; pectoral rather large, reaching a little beyond base of ventral, 



1.3 in head, 5.35 in length; axillary scale of pectoral about half length 

 of fin (variable in Panama specimens), 2.6 in head. 



