126 



U. S. P K. K. EXP. AND SURVEYS ZOOLOGY GENEEAL REPORT. 



young specimens the ocellae and blotches are small, exhibiting, consequently, more of the 

 ground color 



References to the figures. Plate XXVa, fig. 1, represents AnarrichtTiys 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. 



Family GOBIDAE, 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. Regii. 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 caudnl. 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. CUT. 

 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 alreadv 



