116 
1CHTHYOD0KULITES. 
The Bhaetic spines assigned to this genus are not improbably 
referable to the dorsal fins of the fish of which the teeth are known 
as Hybodus minor h 
Nemacantlms moni!i£er ? Agassiz. 
1837. Nemacanthus monilifer, L. Agassiz, Poiss. Foss. vol. iii. p. 26, 
pi. vii. figs. 10-15. 
1837. Nemaccinthus Jilifer, L. Agassiz, ibid. p. 26, pi. vii. fig. 9. 
[Bristol Museum.] 
(?) 1844. Nemacanthus monilifer and N. Jilifer, Meyer & Plieninger, 
Beitr. Pal. Wiirttembergs, p. 108, pi. xii. figs. 65, 66. 
1858. Desmacanthus cloacinus, F. A. Quenstedt, Der Jura, p. 34, pi. ii. 
fig. 13. [Type of Desmacanthus, Tubingen Museum.] 
1874. Nemaccinthus monilifer, K. Martin, Zeitschr. deutsck. geol. Ges. 
vol. xsvi. p. 820. 
1881. Nemacanthus monilifer, J. W. Davis, Quart. Journ. Geol. Soc. 
vol. xxxvii. p. 418. 
1881. Nemacanthus filfer, J. W. Davis, ibid . p. 418. 
Type. British Museum. 
The type species. 
Form. Sf Loo. Bhaetic: Gloucestershire, Somersetshire, Devonshire, 
and Leicestershire; Wiirtemberg. 
23153 b. Two fragments ; Aust Cliff, near Bristol. Purchased, 1849. 
23812. Five portions of spines ; Aust Cliff. ' Purchased , 1849. 
24840. Bone-bed with fragments of three spines ; Aust Cliff. 
Purchased , 1850. 
43852. Four fragments ; Aust Cliff. Purchased , 1872. 
44835. Portion of large spine; Aust Cliff. 
Presented by Benjamin Bright , Esq., 1873. 
46830. Small spine; Aust Cliff. By transfer, 1875. 
P. 2217. Six portions of spines, two being associated; Aust Cliff. 
Egerton Coll. 
P. 2852. Two fragments ; Aust Cliff. Enniskillen Coll. 
P. 2854. Small spine; Somersetshire. Enniskillen Coll. 
P. 2853. Nearly complete small spine ; Axminster. 
Enniskillen Coll. 
1 A. S. Woodward, Trans. Leicester Lit. & Phil. Soc. n. s. pt. xi. (1889), 
p. 18. -o O. //fi. 2.. 
