46 
and they are jhaced about half-way between the pectorals and the anal, 
though generally nearest to the latter. 
Tlie median fins are large and powerful, all consisting of a few strong, 
Avidely-spaccd rays, articulated and bifurcated distally. In front of each 
there are three or four small polished rays, to he regarded as representing 
fulcra ; and in the dorsal and anal fins the number of supporting inter- 
spinous liones exactly corresponds to that of the ordinary rays. The dorsal 
tin is larger than the anal, the one comprising not less than twelve rays and 
the other only about eight ; and tlic latter commences at a point opposite 
the middle of the former. Tlic caudal fin has the appearance of being 
somewhat cxca’S'atcd, hnt it was probably not deeply forked. The upper lobe 
of the caudal jicdicle is atrophied, and the number of rays is about fourteen. 
Squamation . — TTie large rhombic scales with which the fish is covered 
appear to have been originally thick and enamelled, Imt they are generally 
much abraded, and both dorsally and ventrally upon the caudal region they 
arc nearly always destroyed. None exhibit any traces of serrations upon 
tlie posterior margin. Those of the flanks are best shown in No. h (PI. VI, 
Pig. 7), and as far back as the origin of tlie anal fin at least, four horizontal 
series arc much deeper than long. The scales of tlie lateral line arc 
deepest, and the ‘Tine” itself crosses each of these obliquely nearest its 
upper extremity, producing a prominent ridge. There is one series of 
vertically-elongated scales aliovc the lateral line, and two can be distinguished 
below; and the few series placed dorsally and ventrally comprise smaller 
scales of more equilateral form. There are no ridge-scales, except imme- 
diately in front of the median fins. One or two large oval scales occur in 
front of the dorsal ; there are three both on the upper and lower margin 
of the caudal pedicle ; and a small fish on the slab with the counterpart of 
the type-specimen, exhibits two (or perhaps three) others in advance of 
the anal. 
Remarks . — Prom all species of similar proportions P. greqarius is 
distinguished by the remote situation of the dorsal fin. 
PELTOPLEUEUS, Kncr, 1866. 
(fSitzungsb. matb.-naturw. CL kongl. Akad. Wiss., vol. liii, pt. i, p. ISO.) 
Gen. Char . — Body deeply fusiform ; tail externally homoccrcal ; 
caudal fin forked ; snout obtuse ; teeth minute. Paired fins feebly 
