334 Fretp Museum or Natura History — Zoétroey, Vor. X. 
aa. Body somewhat deeper, the depth 3.1 to 3.3 in length in speci- 
mens about 150 mm. long; mouth large, the maxillary reaching 
nearly to vertical from middle of eye. macracanthus, p. 335. 
69. Agonostomus monticola (Bancroft). 
Mugil monticola Bancroft, in Griffith’s Edition Cuvier’s Animal King- 
dom, Fishes, 1836, 367, Pl. 36 (West Indies). 
Agonostoma monticola Ginther, Cat. Fish. Brit. Mus., ITI, 1861, 464 
(West Indies). 
Agonostoma nasutum Gunther, Cat. Fish. Brit. Mus., III, 1861, 463 (Rio 
San Geronimo, Guatemala) ,and Trans. Zool. Soc. London, 1868, 444, 
Pl. 70, fig. 1. 
Neomugil digueti Valliant, Bull. Soc. Philom., IV, 1894, 73 (Lower 
California). 
Agonostomus monticola Jordan & Evermann, Bull. U. S. Nat. Mus., 
XLVII, 1896, 819, fig. 347; Regan, Biol. Cent. Amer., Pisces, 1907, 
66; Meek, Field Mus. Nat. Hist. Pub., Zodl. Ser., X, 1914, 118 (both 
slopes of Costa Rica). 
Agonostomus nasutus Jordan & Evermann, Bull. U.S. Nat. Mus., XLVII, 
1896, 819; Regan, Biol. Cent. Amer., Pisces, 1907, 68, Pl. X, fig. 4. 
Head 3.4 to 4.1; depth 3.1 to 4.1; D. IV-I, 8; A. II, 10; scales 39 to 43. 
Body compressed; upper profile gently convex; head rather small; 
snout conical, 3.2 to 4.1 in head; eye 3 to 4.9; interorbital 2.85 to 3.4; 
mouth moderate, nearly horizontal; upper jaw somewhat in advance of 
the lower; upper lip various, thin, moderately thick, or very thick, its 
upper margin elevated or not at tip of snout; maxillary reaching to or 
a little past vertical from anterior margin of eye, 2.6 to 3.2 in head; 
teeth in bands on jaws, vomer and palatines, the jaw teeth mostly with 
serrate margins, some with lance-shaped apices; gill-rakers rather short, 
17 to 20 on lower limb of first arch; scales rather large, ctenoid, extend- 
ing forward to interorbital area, about 12 rows between anterior rays of 
second dorsal and anal; origin of first dorsal notably nearer tip of snout 
than base of second dorsal, the anterior 2 spines of equal length poste- 
riorly when deflexed, the first one somewhat longer than eye and snout; 
origin of second dorsal nearer origin of the first dorsal than base of 
caudal, the outer margin of the fin concave; caudal fin with small scales 
on basal half, moderately forked; anal fin similar to second dorsal, but 
a little longer, its origin slightly in advance of second dorsal, with 2 
spines, the first one minute and hidden in the skin in adult; ventral fins 
inserted under middle of pectorals, a little nearer origin of anal than tip 
of snout; pectoral fins placed high, of about the same length as ventrals, 
1.32 to 1.5 in head. 
ae 
