SCOPELlDJi. 
249 
fins about as deep as long, nearly equal in size, the former opposed 
to the space between the pelvic fins and the latter ; caudal fin 
considerably forked. Scales delicate, longer than deep, none en- 
larged or thickened except a single ridge-scale at the base of the 
caudal fin above and below. 
Dactylopogon grandis, W. von dor Marck. 
1868. Dactylopoaon grandis. W. von der Marck, Palajontogr. vol. xi. 
p. 270, pi. xli. fig. 1. 
type. Nearly complete fish ; Academy of Munster. 
1’he type species, attaining a length of about (>4. . Length of 
head with opercular apparatus about equal to the maximum depth 
°i the trunk and contained nearly three and a half times in the 
iength from the pectoral arch to the base of the caudal fin. 
Pectoral fin-rays about 15 in number, the length of the foremost at 
least twice that of the cranium ; pelvic fins with 1 undivided and 
( i divided rays, inserted nearer to the anal than to the pectorals ; 
dorsal with *6 gradually lengthening undivided rays followed by 
18 divided rays, arising slightly in advance of the middle point 
between the occiput and the caudal fin; anal arising opposite the 
termination of the dorsal, with 5 gradually lengthening undivided 
rays followed by 19 divided rays. Some scales faintly crimped 
towards the hinder border. 
Form. 4- hoc. Upper Cretaceous : Seudenhorst, Westphalia. 
Not represented in the Collection. 
-Ln indeterminable fragment, probably not of this genus, has 
been described as follows : — 
Dactylopogon parvulus, 1). G. Kramberger, Djela Jugoslav. Akad. 
vol. xvi (1895), p. 41, pi. vii. fig. 3.-Upper Cretaceous ; 
Mt. Lebanon. [Middle portion of small trunk ; Trieste 
Museum.] 
Genus NEMATONOTUS, A. S. Woodward. 
[Ann. Mag. Nat. Hist. (7) vol. iv. 1899, p. 318.] 
Head large, trunk short and robust. Mandibular suspensorium 
nearly vertical ; jaws delicate and maxilla apparently not expanded 
behind; teeth minute. Vertebrae about 30 in number, half being 
caudal ; the centra at least as long as deep, with a few prominent 
longitudinal ridges ; ribs moderately robust. Pectoral fins small, 
