GONOKH YNCHIDJE. 
275 
Type. Imperfect fish ; Edinburgh Museum of Science and Art. 
A species attaining a length of about 01.5. Length of head with 
opercular apparatus equalling about twice maximum depth of trunk, 
and contained four times in total length of fish to base of caudal fin. 
Pelvic fins arising behind origin of dorsal, which is in middle of 
back and comprises 12 rays ; anal fin comparatively small, with 
" ra J' s , slightly nearer to the caudal than to the pelvic fins. 
Form, Loe. Upper Cretaceous : Hakel, Mt. Lebanon. 
Not represented in the Collection. 
Genus NOTOGONEUS, Cope. 
[Amor. Naturalist, vol. xix. 1885, p. 1091.] 
S yn. (?) Anormurus, 11. D. de Blainville, Nouv. Diet. d’Hist. Nat. 
vol. xxvii. 1818, p. 374. 
Sphenolepia, L. Agassiz (non Nees, 1834), Poiss. Foss. vol. v. pt. ii. 
1844, p. 87. 
Trotocatostomus, K. P. Whitfield, Bull. Amer. Mus. Nat. Hist, 
vol. iii. 1890, p. 120. 
Trunk fusiform and somewhat laterally compressed. Head 
pointed and mouth inferior ; no teeth ; suboperculum exhibiting 
a few deep clefts in its hinder border. Vertebra approximately 
,r >0 in number, about 35 being abdominal and 15 caudal. Dorsal 
fin arising at about the middle point of the back, opposite or 
immediately behind the pelvic fins; caudal fin with slightly 
excavated posterior margin. The thickened hinder border of the 
scales fringed with slender denticles ; small scales extending over 
fbe whole of the head and parts of the fins. 
Notogoneus osculus, Cope. 
1885-86. Notogoneus osculus, E. D. Cope, Amer. Naturalist, vol. xix. 
p. 1091, and Mem. Nat. Acad. Sci. vol. iii. p. 163, pi. with 
figs. 4, 5. 
1890. Protocatostomus constdblei (P = A 1 otogoneus osculus, Cope), It. 1. 
Whitfield, Bull. Amer. Mus. Nat. Hist. vol. iii. p. ID, pi. iv. 
[Fish ; American Museum of Natural History.] 
1896. Notogoneus osculus, A. S. Woodward, Proc. Zool. Soc. p. 501, 
pi. xviii. figs. 1, 2. 
Type. Nearly complete fish ; Cope Collection. 
The type species, attaining a length of about 0‘6. Length of 
bead with opercular apparatus about equal to the maximum depth 
°f the trunk, and contained slightly more than five times in the 
t 2 
