336 
ACTIXOPXERYGII. 
in C. furcatus the first measurement is only one-fifth of the second. 
The specimens are important as exhibiting many features in the 
osteology of the genus. 
P. 6902. Vertically depressed head, exhibiting the nasal bones, 
tesserae of supraorbitals, and more than 20 branchiostegal 
rays ; Oxford Clay, Peterborough. Leeds Coll. 
P. 6903. Remains of head and anterior squamation in nodule ; 
Oxford Clay, Peterborough. Leeds Coll. 
P. 6904. Vertically depressed head exhibiting the characteristic 
supraorbitals ; Oxford Clay, Peterborough. Leeds Coll. 
P. 6905-7. Three fragmentary heads, the first displaying the pre¬ 
operculum, the second the alisphenoid, prootic, and para- 
sphenoid bones, with remains of the branchial arches ; 
Oxford Clay, Peterborough. Leeds Coll. 
P. 6908, a-c. Four examples of the hinder portion of the skull and 
adjoining parts ; Oxford Clay, Peterborough. Leeds Coll. 
P. 6910. Associated maxillae and palatine; Oxford Clay, Peter¬ 
borough. Leeds Coll. 
P. 6909. Miscellaneous fragments of trunk and fins ; Oxford Clay, 
Peterborough. Leeds Coll. 
46348. Two fragments of head; Christian Malford, Wiltshire. 
Cunnington Coll. 
29049. Fine large depressed head, with part of the abdominal 
region and the bases of the pectoral fins ; Oxford Cla} T , 
Christian Malford. Purchased , 1854. 
39156-57. Imperfect jaws ; Christian Malford. Bowerbank Coll. 
36174. Maxilla; Christian Malford. Purchased, 1861. 
P. 967. Imperfect maxilla, and maxilla associated with the man¬ 
dible ; Christian Malford. Egerton Coll. 
24676. Imperfect remains of head and trunk; Christian Malford. 
Purchased , 1850. 
Caturus pachyurus, Agassiz. 
1832-33. JJrceus pachyurus, L. Agassiz, Neues Jalirb. p. 142, and 
Poiss. Foss. yoI. ii. pt, i. p. 12. 
1839. Caturus pachyurus, L. Agassiz, Neues Jalirb. p. 118. 
1844. Caturus pachyurus, L. Agassiz, Poiss. Foss. vol. ii. pt. ii. p. 118. 
1844. Caturus elongatus, L. Agassiz, ibid. pp. 118, 293. [Nearly com¬ 
plete fish ; Palaeontological Museum, Munich.] 
