THE FISHES OF POKTO RICO. 
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86. Decap terus punctatus (Agassiz) . Scad; Round Robin; Cigar-fish; Quia-quia. 
(Plate 8.) 
Head 4; depth 5.6; eye 3.3; snout 3; maxillary 3; mandible 2.3; interorbital 3.5; D. viii-i, 30— j ; 
A. ix— i, 27-i ; pectoral 1.4; ventral 2.1; caudal 1.7; scutes 39. 
Body elongate, fusiform, scarcely compressed at all; caudal peduncle very short and slender; 
head small and pointed; jaws subequal, maxillary reaching front of eye; teeth of jaws weak, uniserial; 
adipose eyelid as in T. crumenophthalmus, but not covering so much of eye; lateral line scarcely arched, 
posterior portion with large rather sharply armed scutes, anterior with a series of ordinary scales 
which are not as easily deciduous as others. Shoulder-girdle with a small papilla of the integument 
(seen by raising gill-covers) , somewhat similar to that in T. crumenophthalmus , but much smaller and 
higher in position. This species resembles the latter, but is readily recognized by the presence of the 
single detached finlet at end of soft dorsal and anal fins. 
Color, bluish above, silvery below, with a dark opercular spot, its edge extending upon shoulder. 
The scad ranges from Cape Cod to Brazil, but is only occasional northward. It is common on 
the coasts of Florida and in the West Indies. Nine examples collected, three of them each about 61 
inches in length, taken in the seine by native fishermen at Aguadilla, where, with T. crumenophthalmus , 
it was the principal part of the catch; the other six are the young, about 2 inches in length, taken 
in 220 fathoms, 9 miles from Mayaguez, by the beam-trawl. The species is commonly used as food. 
Caranx punctatus Agassiz, Spix, Pise. Bras., 108, 1829, Brazil. 
Caranx suareus Risso in Cuvier & Valenciennes, Hist. Nat. Poiss., IX, 33, 1833, Mediterranean. 
Dccapterus punctatus , Jordan & Evermann, 1. c., 907, 1890. 
Genus 56. TRACHUROPS Gill. 
This genus is close to Caranx, differing in the more elongate form and especially in the structure 
of the shoulder-girdle, which has a deep cross-furrow at its junction with the isthmus, with a fleshy 
projection above the furrow. Species few, found in all warm seas. 
87. Trachurops crumenophthalmus (Bloch). Goggler; Big-eyed Scad; Goggle-eye Jack; Chicharro. 
Head 3.2; depth 3.8; eye 3.2; snout 2.9; maxillary 2.5; mandible 2; interorbital 4.4; D. viii-i, 25 
or 26; A. ii-i, 22; pectoral 1.2; ventral 2.1; scutes 35. 
Body elongate; but little compressed; back not elevated; dorsal outline little curved; caudal 
peduncle subcylindrical, very slender and short; head rather large and pointed; mouth large, lower 
jaw projecting; teeth on vomer, palatines, tongue, and jaws all weak, uniserial on jaws; maxillary 
reaching about to front of pupil; eye very large, with an adipose eyelid covering two-thirds of eye, 
leaving a vertical elliptical area exposed opposite pupil; lateral line slightly arched anteriorly, covered 
posteriorly with large weak scutes, their spines not strong nor sharp; pectoral falcate; ventral small; 
soft dorsal and anal long and low, their anterior rays somewhat elevated; caudal widely forked. Just 
above junction of isthmus with shoulder-girdle is a large fleshy nipple-like projection. 
F. C. B. 1900—9 
