THE FISHES OF PORTO RICO. 
313 
hhh. Caudal fin pale, no dark bar at base; body pale rosy, no crossbars; scales 2-33-3, 7 in transverse series; D. 
xxx, 1 rubescem , 267 
ee. Dorsal spines about 28; membrane of third dorsal spine joining fourth spine near its tip; body with distinct 
crossbars. 
(. Dorsal xxx, 1, with a distinct ocellus; scales about 2-31-3, 7 in transverse series fasciatus, 269 
ii. Dorsal xxvm, without ocellus; scales 2-30-3, 7 in transverse series cingulatus , 268 
dil. Caudal fin black; body chiefly black; head mottled with whitish; membrane of third dorsal spine joining fourth 
near its summit, fin not notched; dorsal spines 30; dorsal with 2 ocelli nox 
265. Auchenopterus albicaudus Evermann & Marsh. 
Head 3.2; depth 4; eye 4; snout 4.1; maxillary 2.2; mandible 1.6; interorbital 5.3; D. xxx, 1; 
A. ii, 17; pectoral 1.4; ventral 1.5; caudal 1.6; branchiostegals 6; scales 2-34-3, 7 in transverse 
series.* Body rather short, compressed; dorsal outline not elevated; head moderate, not broad; snout 
short, pointed; mouth large, oblique, maxillary extending to below middle of eye; lips broad, prom- 
inent; a band of conical teeth on each jaw, those on side somewhat enlarged and recurved; a patch of 
teeth on vomer, none on palatines; gill-membranes broadly united, free from isthmus; eye large, high 
up; nasal, supraocular, and nuchal region with fringed tuft-like cirri ; a considerable notch between 
third and fourth dorsal spines, but not reaching base of membrane; longest anterior spine scarcely as 
long as those of posterior portion ; scales large, reduced anteriorly; lateral line anteriorly separated 
from dorsal fin by only one scale; head naked. 
Color, uniform dark brown on head and body, no dark crossbars; dorsal brown, mottled with 
lighter, narrowly edged with white; a black spot upon anterior 3 or 4 spines and a large black ocellus 
upon posterior portion of fin between twenty-second and twenty-fourth spines; anal rather darker, 
with narrow white edge; caudal peduncle black, fin abruptly white at base, entire fin being clear white, 
without specks; pectoral black at base, then barred with white and dark; ventral black at base, outer 
two-thirds barred with black and white. 
This species seems to be related to the Pacific coast Auchenopterus iniegripinnis, which it closely 
resembles, differing in the larger scales, deeper body, and coloration. 
Known only from the type, seined at Arroyo, Porto Pico, February 4. 
Auchenopterus albicaudus Evermann & Marsh, Rept. U. S. P. C. 1899 (Dec. 19), 360, Arroyo, Porto Rico. 
266. Auchenopterus fajardo Evermann & Marsh. 
(Plate 47.) 
Head 3.25; depth 4.8; eye 4.2; snout 4.8; maxillary 1.7; mandible 1.5; interorbital 5.5; scales 
2-34-3, 7 in transverse series; D. xxix, 1, the longest spine 2.3 in head; A. ii, 17; pectoral 1.4; ven- 
tral 1.7; caudal 1.4. Body elongate, strongly compressed posteriorly ; head moderate, little compressed; 
mouth large, the long and slender maxillary reaching beyond posterior border of orbit; jaws subequal; 
* In our descriptions of species of this family the scales are counted from near front of dorsal to and including lateral 
line, then in lateral line, then from origin of anal upward and backward to lateral line, the transverse series being 
counted from origin of anal upward and backward to dorsal fin. The half scale at base of dorsal and anal is not counted. 
