APODAL FISHES OF AMERICA AND EUROPE. 
635 
ANALYSIS OF SPECIES OF MY8TKIOPHIS. 
a. Jaws narrowed and not expanded at tip. 
b. Vomerine teeth small, biserial or triserial, fixed; tail moderate. ( Echiopsis Kaup.) 
c. Teeth in jaws biserial; long canines in front of jaws; outer teeth of upper 
jaw nnequal, some of them canine; vomerine teeth in two series, these 
sometimes partly coalescing (sometimes, var. punctifer, partly divided into 
three); lower jaw scarcely included ; pectoral fin about 5 in the head; tail 
a little longev than rest of body ; dorsal commencing behind tip of the 
pectoral, a distance equal to about the length of same ; isthmus equal to f 
the gill-openings, which are large, close together, and subinferior, anterior 
in position; head 2$ to 2$ in the trunk; eye small, 1£ to 2 in the snout; 
gape 2£ in head ; snout 3 in cleft of mouth, 7 in head. Dark brown above, 
paler below, side with two rows of large round or ovate black spots, the 
upper row close to the dorsal fin, the lower row below the lateral line; 
besides these some smaller spots, also black ; head a little darker than the 
body, the spots smaller and numerous, some larger ones below eye ; dorsal 
and anal with dark borders formed by spots ; pectoral black at tip, the 
remainder more or less dusky Intertinctus, 77. 
bb. Vomerine teeth in one series of about 4 slender depressible canines ; tail very 
short, much shorter than rest of body. ( Scy talichthys Jordan & Davi9.) 
dd. Dorsal fin inserted well behind tip of pectorals ; gill-opening midway 
between eye aud beginning of dorsal fin ; pectoral fin very short, as long 
as snout, 10 in head ; snout short, 4 in cleft of mouth ; head depressed and 
pointed, the mouth large ; teeth long, those on vomer aud side of lower 
jaw canine-like ; teeth of upper jaw biserial, rather small ; lower teeth 
uniserial; vomerine teeth uniserial; eye small, placed well forward ; gill- 
openings small, transverse, inferior, as in Ccecula imberbis, the slit as long as 
snout aud wider than isthmus; head 4| in the very long trunk; tail 14 
in rest of body; cleft of mouth in head. Coloration light yellowish, a 
series of roundish dark-brown blotches on each side of body, the two series 
alternating; two alternating series of small half blotches on the back, 
these coalescing into one on median line before dorsal ; head with small 
dark spots; sides of lower jaw spotted ; fins pale . . Miurus,'78. 
77. MYSTRIOFHIS INTERTINCTUS. 
Ophisurus intertinctus Richardson, Voy. Erebus and Terror, Fishes, 102, 1844 (West 
Indies). 
Echiopsi8 intertinctus Kaup, Apodes, 13, 1856 (Martinique). 
Oplxichthys intertinctus Gunther, vm, 57, 1870 ; Jordan, Proc. Acad. Nat. Sci. Phila., 
43, 1884 (Egmont Key, Fla.) ; Jordan, Cat. Fish. N. A., 53, 1885. 
f Ophisurus sugillatus Richardson, yoyage Erebus and Terror, 1844, 103 (habitat uncer- 
tain ; supposed to be West Indies). 
Crotalopsis punctifer Kaup, Abhandl. Wiss. Verein. Hamb., iv, 2, 12, taf. 1, fig. 3, 1860 
(1859) (Puerto Cabello) (fide Gunther). 
Oplxichthys punctifer Gunther, 56, 1870 (copied). 
Confer mordax Poey, Memorias, ii, 319, 1860 (Cuba). 
Macrodonopliis mordax Poey, Repertorio, II, 252, 1868 ; Poey, Synopsis, 425, 1868. 
Crotalopsis mordax Poey, Enumeratio, 153, 1875; Goode & Bean, Proc. U. S. Nat. 
Mus., 344, 1879 (ClearWater Harbor, Fla.). 
Ophichthys schneideri Steiudachuer, Ich. Beitr., vm. 66, 1879 (Brazil) : Jordan & 
Gilbert, Proc. U. S. Nat. Mus., 143, 1883 (Pensacola); Jordan, Cat. Fish. 
N. A., 53, 1885. 
Habitat: West Indian fauna, north to western Florida. 
Etymology: Latin, colored between or within. 
