NATURAL SCIENCES OF PHILADELPHIA. 267 Not Gobius gracilis Jenyns. Gobius lepidus Girard, Explorations and Surveys for a Railroad Route, Arc, vol. vi., Abbot's Report, Zoology, p. 21 (figured). Girard, op. cit., vol. x., Fishes, p. 127, pi. xxva, figs. 5-6. Girard, op. cit., vol. x. William-son's Report, Zoology, p. 86. Lepidogobius gracilis Gill, Annals of the Lyceum of Natural History of New York, vol, vii. p. 14, 1859. Gobius lepidus Giinther, Catalogue of the Acanthopterygian Fishes, &c.,vol. iii. p. 78, 1861. Lepidogobius gracilis Gill, Proc. Academy of Natural Sciences of Phila., 1862, p. 330. D. VII. I. 19. A. I. 16. P. 24. V. I. 5+5. I. The color is tawny or reddish-brown, (thickly dotted with blackish-purpk when viewed under the magnifier) ; the snout, interorbital region and lips, purplish ; the branchiostegal membrane dark purple. The fins are also pur-ple, and thickly dotted with darker, especially between the rays. On the G0BI0IDS of the Eastern Coast of the United States. BY THEODORE GILL. Subfamily GOBIINJE (Bon.) Gill. Genus GOBIUS Artedi. Synonymy. Gobius Artedi, Genera Piscium. Gobius Cuvier, Regne Animal ed, tome ii. Gobius Cuv. et Vol. Hist., Nat. des Poissons, tome xii. p. 1. Gobius Giinther, Cat. Acanthop. Fishes, vol. iii. p. 3. Body moderately elongated, subcylindrical anteriorly, slowly declining and compressed towards the caudal fin, with the anus little in advance of the mid-dle of the total length, and with the caudal peduncle oblong and not or scarcely contracted at its middle. Scales moderate, (in 35 55 transverse rows), more or less hexagonal, gen-erally higher than long, pectinated behind, with the nucleus at or next to the posterior angle, and with radiating striae diverging from it towards the anterior border ; scales generally advancing forwards on the crown. Head oblong, depressed, wider than high, slowly declining to the snout, and with the snout itself, in front, boldly decurved ; above conical, rather rapidly narrowed to the snout, whose periphery is convex. Cheeks behind more or less tumid. Eyes moderate, longitudinal elliptical, oblique and look-ing upwards, closely approximated and situated almost, or wholly, in the ante-rior half of the head. Opercula unarmed. Operculum moderate, shorter than or equal to the internal between it and the eyes. Mouth with the cleft longitudinal, ovoid^the supramaxillars under the pupils. Lower jaw even with, or rather shorter than the upper. Intermaxillars little protractile obliquely forwards, with the posterior processes short, the lateral branches thick, little attenuated backwards and above, with a thin elevated crest, generally truncated in front and decurved behind. Supramaxillars longer than the intermaxillars, slightly twisted, towards the ends compressed and decurved, and with a narrow expansion downwards. Tongue moderate, rather thin, truncated and free in front. Teeth fixed, acutely conic and curved, pluriserial, enlarged in the outer row. Palate smooth. Branchial apertures lateral, vertical, bounded above by a membrane attached in front of the upper pectoral rays, below continued in a short elit between the fourth branchiostegal ray and breast ; isthmus very wide. 1863.]
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