2304 Bulletin //, Ufiited States National Museimi. 



854. DACTYLAGNUS, Gill. 



T>acUjlafinuK, Gill, Troc. Ac. Nat. Sci. Phila. 1862, 505 (mundm). 



Body moderately elongated, covered with rather large and uniform 

 scales. Head cuboid, oblong, scarcely convex transversely above. Eyes 

 small, directed obliquely upward, and situated near the suout on the 

 upjier surface of the head. luterorldtal area moderate and channeled. 

 Mouth very oblique or subvertical, the snout truncated in front; lower 

 jaw transversely convex in front and with no barbel; teeth acute, in a 

 narrow band along each jaw; palate smooth. Dorsal fin perfectly entire, 

 commencing rather farther behind than the anal, and with its anterior 

 portion armed with about 10 slender spines; anal tin longer than the 

 dorsal. This genus closely resembles Dactyloscopus externally. It diliers 

 from the latter genus chiefly in the structure of the dorsal fin and the 

 well-developed pseudobranchia^ {SdnrvXo'^, finger; ayvoi, Agnvs, an 

 old name of Uranoscopus scaher.) 



2042. DKTYLAGMTS MUNDUS, Gill. 



Head 4i; depth 6^. D.X, 31; A. 11,38; scales 2-48-10; eye 6 in head; 

 maxillary 2g ; snout equals eye; highest dorsal spine 3; highest anal ray 

 2i; pectoral equals head; caudal ![}. Body elongate, compressed, taper- 

 ing posteriorly; upper profile of head nearly horizontal, slightly convex; 

 eyes superior, looking ujiward; iuterorbital narrow, concave; lower jaw 

 strongly projecting, mouth nearly Acrtical ; teeth small and conical, in nar- 

 row bands, widest in front; A'omer and palatines toothless; lips furnished 

 with labial fringes about as long as diameter of eye; nostril ending in a 

 tube; preopercle entire; opercle fringed ou its upper edge, a flap of skin 

 downward from opercle covers the branchiostegals ; psendobrauchiio pres- 

 ent; gill rakers not developed; head and belly naked; fins naked. Lat- 

 eral line running near the back through 14 scales, deflected on 4, and 

 thence continued along the middle through 36. Dorsal low, long, and 

 continuous, distance from its origin to tip of snout 3f in body; anal 

 similar, slightly higher and longer; posterior rays of dorsal and anal 

 reaching to base of caudal rays; upper rays of pectoral the longest, 

 reaching to the vertical from tenth anal ray, the lower rays short, gradu- 

 ated, tip of fin slightly curved up; origin of ventrals in front of pecto- 

 rals, the inner rays the longest, reaching about to vent; caudal truncate, 

 or very slightly rounded. Color iu spirits, light brown above, white 

 below, each scale on back with a dark brown spot; top of head with a 

 few brown spots; fins colorless. Length 4^ inches. Gulf of California. 

 Here described from specimens collected by the Alhaiross at Carmen 

 Island, Gulf of California; the type from Cape San Lucas, {viundus, 

 neat.) 



Vactylagnvs mundng, Gill, Proc. Ac. Nat. Sci. Phila. 1802, 505, Cape San Lucas. (Coll. 

 Xantus.) 



