126 
U. S. P E. E. Exr. AND SUEVEYS-ZOOLOGY—GENEEAL EEPOET. 
young specimens the ocellae and blotches are small, exhibiting, consequently, more of the 
ground color 
References to the figures .—Plate XXYa, fig. 1, represents Anarrichthys felis, size of life, from 
the bay of San Francisco, California. Fig. 2 is a section of the body taken immediately 
behind the thorax. Fig. 3 is a scale taken upon the dorsal region beyond the middle of the 
length of the body. 
List of specimens. 
Catal. 
No. 
Cor. 
No. 
No.of 
spec. 
Sex and 
age. 
Locality. 
When 
collected. 
Whence obtained. 
Orig. 
No. 
Nature of 
specimens. 
Collected by— 
511 
3 
Adult.. 
Scin Francisco, Cal..i 
1856 
Dr. W. 0. Ayres ... 
12 - 
Alcoholic. 
Dr. Ayrnsr 
692 
3380 
1 
•.do.••. 
California.. ......... 
1853 
Lt. W. P. Trowbridge 
Bones... • 
Lieut. Trowbridge.. 
693 
3381 
1 
•.do.••. 
Monterey, Cal.,, -.. 
1853 
Family GrOBIDAE, Bonap. 
The body is small in size and sub-fusiform in shape, generally protected with scales either 
cycloid or ctenoid in structure. The united ventrals assume the shape of a funnel, being 
themselves composed of an external undivided ray, and soft, articulated, and sometimes branched 
ones. They are inserted either in advance, under, or posterior to the base of the pectorals. The 
rays of the pectoral fins are divided. The dorsal fin is always composed of spinous and of 
articulated rays, constituting sometimes two distinct fins, occasionally contiguous upon their 
base. The maxillary teeth are of various kind—velvet, card-like, or canines. The palate itself 
is toothless. The gills, four in number, are complete ; that is to say, each one is composed of 
two fully developed branchial combs. The last branchial split (or aperture) itself may be ob¬ 
served between the fourth gill and the inferior pharyngeal bone. An air bladder exists in 
several of the types composing this family. There are no pyloric appendages. 
Syn. — Gobidae, Bonap. Saggio Distr. metod. Anim. Vertebr. 1831, 110. 
Gobioides, Cuv. Regn. Anim. II, 1817, 249 ; 2d ed. II, 1829 ; &, ed. illustr. Poiss. 169.— Agass. Poiss. foss. 
IV, 1834.— Cuv. & Val. Hist. nat. Poiss. XI, 1836, 187. 
Gobioideae, Richards. Faun. Bor. Amer. Ill, 1836, 88. 
Gobioidei, Mull, in Wiegm. Arch. f. Naturg. I, 1843, 297. 
Several members of this family exhibit a papilla genitalis in both sexes, as is also the case in 
the Blenniods above referred to. 
GOBIUS, Artedi. 
Gen. Char. —Body elongated, sub-fusiform, compressed, covered with scales cycloid in structure and moderate in size. The 
head is sub-conical, more or less elongated, its upper surface scaleless. Mouth of moderate size. Velvet or card-like teeth 
upon both jaws, the external series oftentimes stronger and more conspicuous. An isthmus. Palate toothless. Two dorsal fins, 
entirely separated or contiguous upon their base. Caudal posteriorly entire. Anal situated opposite the second dorsal, and, 
like the latter, not united to the caudal. Ventrals inserted under the thorax. Pectorals well developed. 
Syn. — Gobius, Artedi, Gen. Pise. ed. Walbaumi, 1792, 188.— Linn. Syst. Nat. ed. Gmelini, I, 1788, 1196.—Cuv. 
Regn. Anim. II, 1817, 254; 2d ed. II, 1829 ; &, ed. illustr. Poiss. 177.—Cuv. & Val. Hist. nat. 
Poiss. XII, 1837, 1.— DeKay, New Y. Faun. IV, 1842, 160.— Storer, Synops. 1846, 124. 
The genus Gobius, as characterized above, reduces very materially the number of species 
which it is intended to include. Further observations upon the numerous species already 
