WOODWARD : FOSSIL FISHES OF THE UPPER LIAS OF WHITBY. 337 
Fig. Page. 
la. Lepidotus semisenxUus, Agassiz ; mandible of same 
specimen from below, ag., angular; d., dentary. ... 328 
2. Ditto; large posterior suborbital plate, left side. 1, 2, 3, 
facettes for three circumorbitals. [P.5213.] ... 330 
3. Ditto; left maxilla (mx.) and supramaxilla (s.mx.), outer 
aspect. [P.7409.] 331 
4. Ditto ; dentition of left premaxilla, outer aspect. [P. 5223,] 332 
Plate XLVII. 
1 . Lepidotus semiserratus, Agassiz ; head and anterior ab- 
dominal region, right lateral aspect, two-thirds natural 
size, a.o., antorbital ; c.o., circumorbital ; hyo- 
mandibular ; i.op., interoperculum ; mx., maxilla; ojj., 
operculum; orb., orbit; p. op., preoperculum; pet., 
pectoral fin ; s.o., suborbital ; s.op., suboperculum. 
[P.3528a.] 
la. Ditto; portion of vomer of same specimen. 
2-4. Ditto ; three scales from one and the same fish, the first 
and third from the outer aspect, the second from the 
inner aspect. [P.5223.] 
Plate XLYIII. 
1 . Lepidotus semiseri^atus, Agassiz ; imperfect fish, left ventro- 
lateral aspect, one-half natural size. a., anal fin; 
c, caudal fin ; I. a., lateral anal scale ; m.a., median 
anal scale ; md., mandible ; pet., pectoral fins ; plv., 
pelvic fins. [P.3528.] 332 
2. Ditto ; imperfect fish, right lateral aspect, one-half natural 
size, a., anal fin ; e., caudal fin ; el., clavicle ; p. el., 
postclavicular scales. [P.3527.] 333 
Note. — All the specimens represented on these plates are 
preserved in the British Museum, and the numbers in square 
brackets refer to the Register of the Department of Geology. 
Unless otherwise stated, the figures are of the natural size. 
328 
329 
334 
