332 
CROSSOPTERYGII. 
1860. Glyptolepis leptopterus, C. H. Pander, Saurodipt., Dendrodont. 
&c. devon. Syst. p. 62, pi. vii. figs. 4-9. 
1888. Glyptolepis leptopterus , R. H. Traquair, Geol. Mag. [3] vol. y. 
p. 513. 
Type. Portions of fishes ; British Museum. 
The type species of Glyptolepis, attaining a maximum length of 
about 05. Head and opercular apparatus occupying somewhat 
less than one-quarter of the total length. Pectoral fins very long, 
the distal extremity, when adpressed to the trunk, reaching beyond 
the origin of the pelvic pair; pelvic fins large, arising midway 
between the extremity of the snout and of the tail; first dorsal fin 
relatively small; second dorsal and anal equal in size, short and deep, 
directly opposed to each other; [caudal lobe apparently not excessively 
produced]. Scales externally ornamented with well-spaced, delicate, 
irregular antero-posterior ridges, often interrupted, sometimes 
bifurcating, and with fine scattered wrinkles in the interspaces; 
the ridges continued upon the overlapped portion of the scale by 
short, radiating lines of tubercles. 
Form, Log. Lower Old Bed Sandstone : Nairnshire, Banffshire, 
Cromarty, and Orkney. 1 
(i.) Lethen Bar, Nairnshire. 
P. 538, P. 3287. The first of the type specimens, being an imperfect 
head, ventral aspect, in counterpart, figured by Agassiz, 
tom. cit. pi. xx. figs. 1, 4. In addition to the pair of 
jugular plates noted by Agassiz, two of the laterals of 
the right side appear to be distinct. 
Egerton Sf Enniskillen Colls. 
P. 539. Portions of head and anterior half of abdominal region of 
trunk, figured among the type specimens by Agassiz, 
tom. cit. pi. xx. fig. 5. The tuberculations of the head- 
bones and the ridge-ornament of the scales are only faintly 
indicated. Egerton Coll. 
P. 542, P. 3289. Imperfectly preserved abdominal region, with one 
pectoral and portions of the pelvic fins, in counterpart, 
figured among the type specimens by Agassiz, tom. cit. 
pi. xxi. fig. 2. The acutely lobate pectoral fin is identified 
with the pelvic by Agassiz, while the pelvic is named first 
anal. Egerton &; Enniskillen Col 
1 An indeterminable scale from the Devonian of Russia is also assigned to 
this species by Agassiz, Poiss. Poss. V. G. R. p. 139, pi. xxxi. a. fig. 24. 
