FISHES OF EL SALVADOR 
267 
resident and it is not infrequently taken. It occurs in the market in the village, 
and it was served on the table in a local hotel during our visit. Fish up to 500 
millimeters in length are said to be taken locally. This fish was not seen elsewhere. 
This widely distributed mullet is known from nearly all warm waters of both 
hemispheres — on the American coasts from Monterey to Chile and from Cape Cod to 
Brazil. The El Salvadorian specimens were taken in the Rio Lempa at Suchitoto. 
12. Genus AGONOSTOMUS Bennett 
Agonosiomus Bennett, Proc, Zool. Soc, London, I, 1830 (1831), 166 (type Agonostomas telfairii Bennett). 
Neomugil Vaillant, Bull., Soc. Philom., Paris, IV, 1894, 73 (type Neomugil digueii Vaillant). 
Body elongate, compressed; mouth terminal in young, subinferior in adult; 
cleft extending laterally to or past front of eye; lower lip never greatly thickened; 
teeth in bands on jaws, vomer, and palatines; anal spines 2, the first one minute, 
often hidden in the skin; stomach not gizzardlike. The species of this genus 
inhabit mostly tropical rivers, some of them living in mountain torrents. A single 
species was taken in El Salvador. 
13. Agonostomus monticola (Bancroft) 
Tepemechin; Chimbera; Liza 
Mugil monticola Bancroft, in Griffith's edition, Cuvier's Animal Kingdom, Fishes, 1836, 367, pi. 36 (West Indies). 
Agonostomus monticola Giinther, Cat. Fish. Brit. Mus., Ill, 1861, 464. 
Agonostomus nasutum Giinther, Cat. Fish. Brit. Mus., Ill, 1861, 463 (Rio San Gerouirao, Guatemala). 
Neomugil digueti Vaillant, Bull., Soc. Philom., IV, 1894, 73 (Lower California). 
Agonostomus salvini Regan, Ann. and Mag. Nat. Uist., 7 ser., XIX, 1907, 66, and Biol. Cent. Amer., Pisces, 1907, 68, PI. XI, 
fig. 2 (Naeasil, Guatemala). 
Head 3.9; depth 3.8; D. IV-I, 8; A. 11, 10; scales 42. 
Body elongate, moderately compressed; upper profile gently convex; head 
rather small; snout rather long, pointed, 3.4 to 3.55 in head; eye 3.4 to 4.1; inter- 
orbital 2.55 to 3.1; mouth moderate, nearly horizontal; upper jaw projecting; 
upper lip moderately thickened in a large specimen, rather thin in a smaller one; 
maxillary reaching a little past anterior margin of eye but scarcely to pupil, 2.85 
to 3.1 in head; teeth small in bands on jaws, vomer, and palatines; gill rakers 
about half as long as eye, 19 on lower limb of first arch; scales rather large, strongly 
ctenoid, extending forward on interorbital, present on cheeks, 11 or 12 longitudinal 
rows between origin of second dorsal and base of anal; origin of spinous dorsal at 
least an eye's diameter nearer tip of snout than base of caudal, the spines strong, 
the anterior one a little longer than eye and snout, 1.55 to 1.6 in head; origin of 
second dorsal about an eye's diameter nearer the origin of the first than the base 
of the caudal, the outer margin of the fin concave; margin of caudal fin rather 
deeply concave; anal fin similar to the second dorsal but somewhat larger, its 
origin a little in advance of second dorsal; ventral fins moderate, inserted under 
or slightly posterior to middle of pectorals; pectoral fins a little longer than the 
ventrals, reaching to or a little beyond vertical from origin of spinous dorsal, 1.3 to 
1.55 in head. 
42885— 25t 3 
