Jordan and Evermann. — Fishes of North America. 2303 



along middle of sides, and a fainter one along base of anal, formed l)y 

 darker margins to the scales; median dorsal line with 10 or 11 more or 

 less evident narrow pearly white cross bars; top of head and front of 

 mandible colored like the back, the pearly blotches varying in siz(? and 

 shape, bnt symmetrically arranged, many of them narrowly edged with 

 black; nasal tentacle white; white streaks on preopercle; candal with 

 a narrow black bar at base. Gulf of California. Three specimens, the 

 longest 3 inches, from Albati-oss Stations 2797 and 3012, the latter in 22 

 fathoms. (Gilbert.) (lunaticus, moon-struck.) 



Daetyloscopus lunaticus, Gilbert, Proc. U. S. Nat. Mus. 1890, 99, Gulf of California. (Coll_ 

 Albatross.) 



Subgenus ESLOSCOPUS, Jordan & Evermann. 



2641. DACTYLOSCOPUS ZELOTES, Jordan & Gilbert, new species. 



Head U in length; depth 6|. D.VI,38; A. 11,37; V.3; scales 6-51-5; 

 B. 6. Head and body slender, compressed, the greatest width at occiput, 

 f length of head; the greatest depth immediately behind insertion of 

 anal fin, thence tapering to a very narrow tail. Head narrow, cuboid, 

 comi)ressed, the upper surface nearly plane, the cheeks vertical. Eyes 

 very small, superior, m ith little lateral range; diameter of orbit about -]--, 

 length of head; snout very short, about equaling orbit; anterior nostril 

 in a short tube; gape subvertical, the lower jaw very heavy, projecting) 

 as in I'ranoscopiis; premaxillaries protractile, the processes reaching far 

 behind orbits; lips fringed; both jaws with bands of villiform teeth; no 

 teeth on tongue, vomer, or palatines. Subopercle and interopercle very 

 wide, flexible, striate, the latter overlapping throat and base of ventral 

 fins, the former wholly covering base of pectoral fins; the striations of 

 opercle terminate posteriorly in a wide, coarse, membranaceous fringe; 

 bi-anchiostegal membraucs not united, free from the isthmus; pubic bones 

 forming a sharp projection at throat; no pseudobranchia> ; gills small, a 

 round pore behind the fourth. Dorsal beginning on the nape, its dist:,nce 

 from snout about equaling depth of body, the first 6 rays shorter than 

 those following and not connected by membrane; as no traces of articula- 

 tion can be found, they are probably flexible spines, but are not clearly 

 differentiated fi'om those immediately following; origin of anal under 

 fourth dorsal spine; caudal distinct, narrow, short; ventrals inserted 

 under anterior margin of preoiiercle; ventrals 2 in head; pectorals 1^. 

 Scales large, with entire edges, wanting on head, breast, and region 

 l)ehind pectoral fins. Lateral line beginning at ujjper posterior angle of 

 opercle, running parallel with the back on about 12 scales, then obliquely 

 downward to middle of body. Color in spirits, light olivaceous, the edg- 

 ings of the scales, some vermiculations on top of head, and tlie labial 

 fringes clear brown; fins translucent, the caudal with a brown bar at 

 base; eyes dark. Length 3^ inches. Panama; 1 specimen known. The 

 present description copied from the original in Proc. Nat. Mus. 1882, 628. 

 {'Cr/Xcbrrfs, an imitator, from its resemblance to Dactylagnns mundus.) 



Dactyloscopus, sp. nov., Jordan & Gilbert, Proc. TJ. S. Nat. Mus. 1882, 628, Panama. 

 Uactyluscopus zelotes, Jordan & Gilbert, new species (MS. 1882), Panama (Coll. Capt. 

 Dow). 



