SCO CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 



171.— MYKICHTHYS Girard. 

 (Girard, Proc. Auad. Nat. Sci. Pliila. 1859, 58: type Myrichthys tigrinus Grd.) 



Pectorals present; dorsal inserted in advance of base of pectorals, at 

 a point nearer to them than to the eye. Head large ; the lower jaw 

 shorter than the npper. Teeth granular, disposed in elongated patches 

 on the jaws, palatines, and nasal bones. Eyes well developed. Gill- 

 openings lateral, moderate. Body naked. Nostrils near the end of the 

 snont, the upper very small, opposite the lower, which are conspicuous 

 and tubular. {fj.upo<;, Myrus, an ancient name of Murccna ; r/J^o^, fish.") 



585. M. tijfrinus Grd. 



Brownish above, throat and belly dull whitish ; roundish, dark brown 

 spots on the body in four longitudinal series ; belly plain ; throat with 

 whitish spots ; spots on head smaller and deeper in color. Fins oliva- 

 ceous; pectoral and anal plain; dorsal spotted like the body, white- 

 edged. Body subcylindrical, somewhat compressed, tapering backward. 

 Pectorals broader than long. Head 12 in length. Cleft of mouth ex- 

 tending beyond eyes. Teeth unequal, in many series; three series on 

 the front of the dentary bones; two on the upper jaw and two on the 

 shaft of the vomer. Length 2 feet. {Girard.) Adair Bay, Oregon, not 

 found by recent collectors. 



(Girard, Proc. Acad. Nat. Sci. Phila. 1859, 58.) 



112.— NEOCONGER Girard. 



(Girard, U. S. Mex. Bound. Siirv. Ichtb. 1859, 77: type Neoconger mucronatus Grd.) 



Scaleless. Pectoral fins present: dorsal and anal fins rudimentary, 

 passing around the tail, towards the end of which they are more devel- 

 oped. Cleft of the mouth extending beyond the small eye; maxillary 

 teeth slender, in several series; vomerine teeth uniserial, forming a patch 

 in front; posterior nostrils near the anterior rim of the orbit, anterior 

 near the tip of the snout ; tail not much longer than the body. Gill- 

 openings vertical, rather large. Gulf of Mexico, (^'to?, new; xoyypfx;, 

 Conger.) 



5§6. IV. maacronatMS Grd. 



Dark reddish brown above, paler below; head small, slender, pointed; 

 upper jaw the longer; dorsal fin beginning just in front of the vent, 

 forming a membranous ridge until near the tail, where it expands and 

 becomes fin-like ; pectorals small. Coast of Texas. {Girard.) 



(Girard, U. S. Mex. Bouud. Surv. Ichth. 1859, 77; Giinther, viii, 49.) 



