FISHES — BLENNIDAE — LUMPEN'US ANGUILLARIS. 123 



other species have teen referred to the genus Clinus, whence removed by Kroyer and placed in 

 Eeinhardt's genus. 



Nilsson sub-divides still further the species heretofore referred to Lumpenus, proposing the 

 genus Ctenodon for Clinus maculatus of Fries, Lumpenus aculeatus, Reinh., and allied species. 



LUMPENUS ANGUILLARIS, Grd. 

 Plate XXVb, Fig. 1-3. 



Spec. Char. — Head slender, continuous with tlie outline of the body. Gape of mouth slightly oblique. Posterior extremity 

 of maxillar bone extending to a vertical line drawn midway between the anterior rim of the orbit and the pupil. Origin of 

 dorsal fin situated opposite the base of the pectorals. Pectorals and caudal spear-shaped ; greenish olive, upper regions 

 maculated. Caudal fin transversely barred. 



Syn. — Blennius anguillaris. Pall. Zoogr. Ross. Asiat. lU, 1831, 176. 



Gunnellus anguillaris, Cuv. & Val. Hist. nat. Poiss. XI, 1836, 437.— Storer, Synops. 1846, 121. 

 Leplogunnellus gracilis, Atres, in Proc. Cal. Acad. Nat. Sc. I, 1855, 26. 



The largest specimen before us is thirteen inches and a half in total length ; it is the one 

 ■which we have caused to be figured. Its body is very much compressed, a good deal more so, 

 posteriorly to the origin of the anal fin, than anteriorly. The greatest depth is across the 

 middle of the abdomen, and tapers gradually backwards. The thickness is about the two- 

 thirds of the depth. 



The head constitutes about the eighth or ninth of the entire length. Its upper surface is 

 smooth and scaleless, slightly sloping towards the snout, which is sub-conical. The gape of the 

 mouth is slightly oblique, the jaws being nearly even anteriorly (inferior one slightly shortest), 

 and the posterior extremity of the maxillar bone extending to a vertical line drawn midway 

 between the anterior rim of the orbit and the pupil. Exiguous, canioe-like, or conical and 

 slender teeth may be seen upon both jaws, constituting a double row upon the symphysis of the 

 dentary (lower jaw). On the premaxillaries we observe but one external series of this type, 

 though several internal series of card-like ones may be distinctly traced upon the body of these 

 bones. The vomer is toothless, whilst the palatines are provided each with an elongated patch 

 of velvet-like teeth. The eye is large, sub-elliptical in shape, approximating the upper surface of 

 the head. Its horizontal diameter enters about five times and a half in the length of the side 

 of the head, a little more than once in advance of their anterior rim. The cheeks are scaly ; 

 the opercular apparatus smooth and scaleless ; the branchial apertures wide and continuous 

 under the throat, being produced forwards to the base of the hyoid apparatus. The branchiostegal 

 rays themselves are slender, well developed, and six on either side. 



The dorsal fin is spinous throughout ; its origin takes place immediately opposite the upper 

 edge of the base of the pectorals. The first ray is quite small and exiguous, rather detached 

 from the fin, since there is but a rudimentary membrane at its base. The second, third, and fourth 

 spines increase slightly in height without being bound to tlie fin. From the fifth to the twelfth 

 the rays still go on increasing slightly in height, and the interradial membrane now connects 

 the two adjoining rays, although quite emarginated. This emargination of the interradial 

 membrane of the dorsal fin is traceable to its entire length, although to a lesser degree. The 

 fin itself terminates at a short distance from the base of the caudal fin. The anal fin is composed 

 almost exclusively of articulated and dichotomised rays, there being but one rudimentary spine 

 at its anterior margin, which is a good deal nearer the extremity of the snout than the base 



