Jordan and Evermann. Fishes of North America. 619 



Family LXXXVIII. LIPOGENYID.E. 



Heteromi with a roundish, inferior, suctorial mouth, imperfect lower 

 jaw* with its rami separated at middle, connected with the corresponding 

 sides of the upper jaw, and invested in a thick, transversely plicated, 

 horseshoe-shaped lip, reflected upward behind on the cheeks ; no teeth 

 short row of 4 or 5 partially connected graduated dorsal spines and 5 to 

 7 branched rays, forming a regular fin. (Gill.) (Lipogenyidcv, Gill, in 

 Goode & Bean, Proc. U. S. Nat. Mus., 1894 (1895), 469.) 



296. LIPOGENYS, Goode & Bean. 



Lipogenys, GOODE & BEAN, Proc. U. S. Nat. Mus., 1894 (1895), 469, and in Oceanic Ichthyology, 

 173, 1895, (gillii). 



Head and body compressed, the body elongate, as in Notacantkus. 

 Snout produced, compressed, obtuse at tip. Cleft of the mouth inferior, 

 suctorial, circular in front, surrounded by rugose, contractile lip, with 

 cleft posteriorly, flanked by wing-like flaps, containing the modified man- 

 dibular bones, which articulate with the end of the maxilla and are free 

 behind. A concealed spine at the end of the maxilla. No teeth. 

 Anterior nostril in short tube, the posterior oblong, under a short flap. 

 Dorsal fin short, but normal and well developed, with a distinct soft por- 

 tion ; anal fin normal in position, high, with many spines, and with 

 some of the rays spine-like, though forked ; a distinct, though very 

 small, caudal fin; ventrals normal, well developed, with several spines. 

 Scales minute, very numerous; lateral line conspicuous. (Amrw, to 

 leave off ; yvvf,jaw.) 



917. LIPOGENYS GILLII, Goode & Bean. 



Head 8f ; depth 10 ; eye 5 ; snout 4 ; interorbital width 5 in head. D. 

 V, 5 j A. XLI, 88 ; V. Ill, 7. Body compressed, its greatest width i its 

 height. Postorbital portion of head twice as long as snout. Diameter of 

 circular opening of mouth about \ diameter of eye. Dorsal fin inserted 

 at a distance from snout equal to about 3 times length of head. It con- 

 sists of 5 graduated spines, of which the first is minute, and the longest 

 as long as snout, and 5 soft rays, of which the second is longest, nearly i 

 as long as head ; the spines and rays are all compactly arranged in a 

 strong, triangular fin ; length of dorsal base \ that of head ; anal 

 beginning under fourth spine of dorsal, of 41 spines and 88 rays, of 

 which the anterior 10 are stiff, though articulated, and divided at the 

 tip; longest ray longer than longest spine, about as long as snout; ven- 

 tral fins almost meeting in the median line, reaching vent but discon- 

 nected ; distance of ventral from tip of snout about 2| times length of 

 head ; pectoral placed below median line of body, at a distance from 



*" The anomalous and unexampled modification of the lower jaw and mouth deserves a detailed 

 anatomical examination, but the existence of only one specimen for the present, at least is 

 deemed sufficient to render such an investigation inadvisable." Goode & Bean. 



