418 Synopsis of the Fresh Water Fishes, . 



readies a length of between five and six inches. It is at once 

 distinguishable from the other insular species by its greater 

 height, and by the presence of black humeral and caudal spots. 

 It appears to be very nearly allied to the Tetragonopterus 

 Linnsei of Yalenciennes, or the Albula maculata of Linnaeus. 

 The former, which is probably the same as the Linnsean species, 

 is an inhabitant of Cayenne. 



We have dedicated it to Mr. J. Carson Brevoort, of the city 

 of Brooklyn, whose profound knowledge of the North American 

 marine fishes, and especially those of the family of Scombroids, 

 to which his memoir on the " lost fish," Selene argentea of 

 Lacepede, bears testimony, places him among the first of 

 ichthyologists. 



Pcecilurichthys tseniurus, Gill. 



Vernacular : Sardine. 



Body slender, with a subfusiform outline, four times longer 

 than high. The head, from the snout to the margin of the 

 operculum, forms more than two-elevenths of the entire length, 

 inclusive of the caudal fin. The diameters of the eyes are con- 

 siderably more than a third of the height of the head ; a space 

 exceeding half of one of their diameters intervenes between 

 them and the snout, and the space between them is equal to 

 three quarters of a diameter. The body, at its greatest height, is 

 crossed by fourteen rows of scales. The dorsal commences at 

 a distance from the snout, equal to two-fifths of the entire 

 length of the body. The extremities of the ventrals extend to 

 the commencement of the anal. 



D. 10. A. 27. C. I. 9. 9. 1. P. 13. V. 8. 



The ground color is yellowish green ; a broad silvery band 

 passes along the sides, and extends from the angle of the 

 operculum to the peduncle of the tail ; the middle rows of the 

 caudal are covered by a broad black band, which extends to 



