CHIMiERIDiE. 
71 
P. 2214. Fragment of a similar spine; Caen. Egerton Coll . 
27412. Small slender spine O059 in length ; Oxford Clay, Christian 
Malford, Wiltshire. Purchased , 1852. 
41877. Portion of large spine ; Kimmeridge Clay, Weymouth. 
Purchased , 1869. 
43558. Proximal half of large spine; Weymouth. Purchased, 18/2. 
P. 1159, P. 3098. Two portions of similar spines; Weymouth. 
Egerton fy Enniskillen Colls. 
36162-3. Large portions of two spines of the form named Aiduoca - 
canthus dutertrei , H. E. Sauvage, Catal. Poiss. Form. 
Second. Boulonnais (Mem. Soc. Acad. Boulogne, vol. ii. 
1867), p. 65, pi. iii. fig. 1; Kimmeridge Clay, Boulogne- 
sur-Mer. Purchased , 1861. 
P. 6036. Fragment; Portland Stone, Weymouth. 
Presented by George Clifton , Esq., 1889. 
47187, P. 34, P. 60. Four fragments and one nearly complete spine, 
probably of Ischyodus thurmanni ; Gault, Folkestone. 
Gardner Coll. 
The fragment of spine named Chimceracanthus aalensis by Q,uen- 
stedt (Der Jura, 1858, p. 347, pi. xlvii. fig. 19) was obtained from the 
Brown Jura (3 of Wiirtemberg, and is now preserved in the Tubingen 
University Museum. 
Another spine, from the Upper Trias of Lombardy, said to be of 
the same type as those mentioned above, is described under the 
name of L&ptacanthus cornalice , C. Bellotti in A. Stoppani’s Studii 
Geol. e Paleont. Lombardia (1858), p. 437. This, however, is 
evidently Hybodont, as pointed out by E. Cornalia, Giorn, B. Istit. 
Lombardo, vol. vi. (1854), p. 58, pi. ii. fig. 5. 
The following species have also been founded upon detached 
teeth, of which there are no representatives in the Collection :— 
Ischyodus aalensis , J. Biess, Palseontogr. vol. xxxiv. (1887), p. 19, 
pi. i. fig. 9 : Chimcera aalensis, F. A. Quenstedt, Handb. 
Petrefakt. (1852), p. 185, pi. xiv. figs. 14-16, and Der 
Jura (1858), pp. 339, 347, pi. xlvii. figs. 21-28.— 
Brown Jura (3 ; Wiirtemberg. [Tubingen University 
Museum.] 
Ischyodus acutus , H. von Meyer, Palseontogr. vol. vii. (1859), 
p. 17, pi. ii. figs. 9-12.—Portlandian; Hanover. [Left 
vomerine tooth,] 
