GILBERT AND ST ARKS — FISHES OF PANAMA BAY 

 Measuremcnls in Hundredths of Length without Caudal. 



123 



Length from tip of upper jaw to caudal base in mm. 



Depth 



Head, from tip of upper jaw 



Eye 



Maxillary 



Least width of suborbital 



Interorbital (bone) 



Length of third dorsal spine .... 



Length of fifth dorsal ray 



Length of longest anal ray 



Length of pectoral 



Length of ventrals 



Length of middle caudal rays ... 

 Least height of caudal peduncle . 



227. Larimus argenteus {Gill). 



BOCATUERTA BLANCA. 



Very abundant. 



In this species, a vertical line from the corner of the closed mouth passes mid- 

 way between the front of the orbit and the tip of the snout. The length of the snout 

 is two-fifths that of the maxillary. The gape is arched, with the convexity behind. 

 The anterior (lower) margin of the mandible is also strongly arched with its convexity 

 forwards. The eye is smaller than in any other sj^ecies of the genus, 4| to 5 in head, 

 in adults. 



In life, very brilliant silvery on sides and below, the upper parts faintly olive, 

 with silvery, greenish and bluish reflections. The dorsal and anal are slightly dusky, 

 the pectorals translucent, the anal and ventrals white or faintly straw-colored. 



228. Larimus effulgens Gilbert. 



Plate XVI, Fio. 3.3. 



Lari7mis effulgens Gilbert (Jordan & Evermann, 1898, p. 1421). 



Very close to L. acclivis, with which it agrees in almost all details of structure. The color 

 is, however, bright silvery without trace of stripes, as in L. argcjiteus. The pectoral fin is also much 

 longer. 



Dorsal XI, 28 to 30; anal II, 6; pectoral 16; head 3j'd to 2,\,\ depth 2J to 3; pores of lateral 

 line 49 or 50. 



