THE FISHES OF PORTO RICO. 
135 
Fig. 35 . — Selene vomer. Adult. 
94. Selene vomer (Linnaeus). Moon-fish; Jorohado; Look-down. 
Head 3; long dorsal rays 2; pectoral 2.75; long anal rays 2.66; depth 1.5, the young much deeper. 
D. vii— i, 23; A. ii-i, 18. Anterior profile from tip of snout to occiput almost perfectly straight in 
adult. Diameter of eye, length of opercle, and distance from eye to profile about equal; eye 2 in 
maxillary, 2.5 in preorbital; mandibles very deep, dentary bones thin, approximate; one or two of the 
dorsal spines greatly elongate and filamentous in young, short in adult; ventrals variable in length, 
usually about as long as the eye in the adult, variously elongate in partly grown specimens. 
ms'is may be distinguished by its larger eye, at least in some individuals of 2 or 3 inches in length. 
The ventral outline of Y. seli.pinnis is somewhat more strongly curved than in 1'. (jabonensis, while in the 
adult the reverse is true. The young of l r . (jabonensis has the caudal lobes more slender and somewhat 
longer than in the corresponding size of the other species, but this difference disappears in the adult. 
The species reaches a weight of a pound or more, is abundant and much used as food, being hawked 
about the streets upon strings attached to a stick, which is carried over the shoulders. 
The corcobado is known from Africa and the West Indies. We collected 32 examples, 2.5 to 8 
inches long, from San Juan market, Palo Seco, Arecibo, Aguadilla, Arroyo, and Isabel Segunda. 
Argyreiosus setipinnis var., Gunther, Cat., II, 459, 1860, Fernando Po, Santo Domingo, Jamaica, and Bahia. 
Vomer gabonensis Guichenot, Ann. Soc. Linn. Maine et Loire, 42, 1865, Gaboon; Jordan & Evermann, 1. c.934, 1896. 
Genus 59. SELENE Lace'pede. The Moon-fishes. 
Body very closely compressed and much elevated; profile very oblique or nearly vertical; edges 
of body everywhere trenchant, especially anteriorly. Head short and very deep, opercle very short, 
and preorbital extremely deep; an abrupt angle at occipital region. Mouth rather small; premax il- 
laries protractile, fitting into a notch between the bases of maxillaries; maxillaries broad, each with 
supplemental bone. Tongue narrow, free. Teeth minute, on jaws, tongue, vomer, and palatines. 
Gillrakers long and slender. Spines of fins usually weak, more or less filamentous in young; free anal 
spines immovable, sometimes obsolete in the adult. Soft fins falcate, much elevated. No finlets. 
Head naked. Scales minute. Lateral line wholly unarmed. Coloration silvery. 
Found in the tropical seas. Notwithstanding its extraordinary form this genus differs in no 
important regard from Caranx. 
