346 
U. S. P. R. R. EXP. AND SURVEYS—ZOOLOGY-GENERAL REPORT. 
to it. The posterior margin of the dorsal fin is nearer the extremity of the caudal than the 
apex of the snout. 
D 32; A3; C 1, 4, 4, 1 ; VO; P 10. 
The dorsal region is yellowish brown ; the flanks are olivaceous, the upper half maculated or 
streaked with blackish, the lower half vermiculated with brown ; the belly being yellowish 
with a more open mesh work of brownish lines. 
List of specimens. 
Catal. 
No. 
No. of 
spec. 
Sex. 
Locality. 
Whence obtained. 
When collected. 
Nature of 
specimens. 
Collected by— 
670 
i 
9 
San Diego, California. 
Lt. W. P. Trowbridge. 
1853 
Alcoholic... 
A. Cassidy. 
4. SYNGNATHUS ABBOTI, Grd. 
Abbot’s Pipe-fish. 
Spec. Char. —Head contained seven times and a half in the total length, caudal fin excluded : somewhat over twice in that 
of the body. Anterior rim of the orbit nearer the insertion of the pectoral fins than the apex of the snout. Longitudinal 
diameter of the orbit entering eight times in the length of the side of the head. Origin of dorsal fin situated rather in advance 
of the anterior edge of the anal aperture ; its base, in the female sex, entering twice and one-third of a time on the distance 
between the concavity of the thoracic belt and the anterior edge of the vent. Dark or blackish brown above ; brownish beneath. 
A very slender and elongated species ; the specimen before us measuring a little over nine 
inches. There are nineteen plates anterior to the vent, and forty-two posterior to it. The head 
constitutes more than the eighth part of the length. The posterior margin of the dorsal fin is 
nearer the extremity of the caudal than the apex of the snout. 
D 39; A3; C 1, 4, 4, ] ; Y 0; P 12. 
The upper region of the head and body is blackish brown ; the sides of the head and the 
flanks assume the same tint, but are finely streaked or dotted with yellowish golden. The 
inferior surface of the head and belly are yellowish golden, maculated with brown or black. 
The caudal region is darker than the body. 
List of specimens. 
Catal. 
No. 
No. of 
spec. 
Sex. 
Locality. 
When 
collected. 
Whence obtained. 
Nature of 
specimen. 
Collected by— 
971 
i 
9 
San Francisco, California.. 
1855 
Lt. R. S. Williamson.... 
Alcoholic. 
Dr. John S. Newberry... 
5. SYNGNATHUS ARUNDINACEUS, Grd. 
Reed Pipe-fish. 
Spec. Char. —Head contained seven times in the total length: twice in that of the body. Anterior rim of the orbit 
equidistant between the apex of the snout and the insertion of the pectoral fins. Longitudinal diameter of the orbit entering 
eight times and a half in the length of the side of the head. Anterior margin of dorsal fin situated in advance of the anal 
aperture ; its base, in the male sex, entering twice and a quarter of a time on the distance between the concavity of the thoracic 
belt and the anterior edge of the vent. Blackish brown, maculated beneath with golden yellow. 
