NEW GENERA AND SPECIES OF FISHES FROM PUERTO RICO. 355 



cheek and opercle, bordered above by au undulating maroon line and belo^v by a 

 similar, but fainter line; a brown bar from eye to snout; 4 dusky spots near base of 

 dorsal extending as fainter shades downward and slightly forward to or beyond lat- 

 eral line, 1 from in front of dorsal, 2 under spinous dorsal, and 1 under soft rays; 

 short pale-blue bars or spots on breast and about pectoral; iris blue, a pinkish bor- 

 der surrounding pupil; dorsal greenish, the soft part with yellow shade, a pale-blue 

 edging to the whole fin, a maroon border to the green color posteriorly just inside 

 the pale-blue edge, a small dark spot on membrane between seventh and eighth 

 rays and a blue spot on membrane of first spine; anal colored like soft dorsal, the 

 maroon border extending from first spine to last ray inside the pale edging, the 

 dark spot between sixth and seventh rays; ventral green near base, pale blue out- 

 wardly, the green color bordered by maroon spots ; pectoral plain, pale green ; caudal 

 very pale transparent blue, a wedge-shaped maroon spot on the 2 upper rays near 

 tip and a corresponding one on the 2 lower rays, the base of the wedge on outer ray; 

 base of caudal with a pale undulate vertical bar bordered in front by a black line. 

 In spirits, pale green, the maroon markings faintly persistent, becoming dusky. 



One specimen, the type (No. 49363, U. S. N. M.) 1.45 inches long, taken in the seine 

 at Ponce, January 30, 1899. 



DecoriS) beautiful. 



7. Sicydiuni caguitee Evermann & Marsh, new species. 



Head 4.4; depth 4.8; eye 5.75; snout 2.5; maxillary 2; mandible 2.75; interorbital 

 width 3; preorbital 3.5; D. vi-i, 10; A. i, 9; scales 83-25; longest dorsal spine 1.5 

 in head, longest ray 2; longest anal spine 2 in head, longest ray 2; pectoral 1.1; 

 ventral disc 1.75; caudal 1. 



Body rather stout, heavy forward; head large, broad; mouth large, its width 1.5 

 in head; lips very thick; maxillary not greatly produced; teeth simple, flexible; a 

 median cleft in upper lip; pectoral somewhat shorter than head; dorsal spines 

 without filaments, the longest about 1.5 in depth of body; space between dorsals 

 about equal to orbit ; soft rays of dorsal and anal scarcely reaching base of caudal; 

 ventrals united, forming a cup-shaped disc, only about two-fifths posterior edge free 

 from belly; caudal rounded. Scales very small, ctenoid, densely covering entire 

 body except a broad strip on belly; posterior portion of nape with very fine scales; 

 entire head naked. 



Color: Dark brown or olivaceous on head, sides, and back; under parts pale; 

 fins all pale, the anal with a narrow darkish margin; caudal somewhat dark; no 

 dark vertical bars on body and none at base of pectoral; no H-shaped figure at base 

 of caudal. 



This species is close to .S. plumieri, from which it diflers chiefly in the color, the 

 more complete squamation, the shorter pectoral, and the non-filamentous character 

 of the dorsal spines. 



A single specimen (type No. 49364, U. S. N. M.), 3.63 inches long, obtained in the 

 Rio de Caguita at Caguas, January 9, 1899. 



8. Gobius bayamonensis Evermann & Marsh, new species. 



Head 4.8; depth 6.4; eye 5; snout 3.2; maxillary 1.8; mandible 1.9; interorbital 

 7.6; preorbital 4.6; scales 71-19, about 29 before dorsal; D. iv-14, the longest 

 spine about 0.7 in head, the longest ray 1.5; A. 15, the longest ray 1.5; pectoral 1.1; 

 ventrals 1.1; caudal very long and pointed. Body very long and slender; headlong; 

 caudal peduncle long; mouth very large, oblique; maxillary long, reaching past 

 posterior border of orbit. 



Color as in G. oceanicus, which this species closely resembles. The smaller (71 

 instead of 63 to 65), almost cycloid scales, the longer head, larger mouth, longer 

 maxillary, and the longer and more slender body are diflerences which we can not 

 reconcile with the descriptions of that species or with the numerous specimens of it 

 which we have from Puerto Rico. 



This description is based on a single specimen 9 inches in length, No. 49365, U. S. 

 N. M., bought in the San Juan market, January 14. It probably came from near the 

 mouth of Bayamon River at Palo Seco, for which stream the species is named. 



