140 
ACTIXOPTEKYGrII. 
19430-31. A small trunk with opercular bones, in counterpart; 
Barrow-on-Soar. Maximum depth of trunk 0*049, and 
length (without caudal fin) 0*06. 
Presented by the Earl of Aylesford, 1845. 
40176. A very small fish displaying the reticulations on the oper¬ 
culum ; Barrow-on-Soar. Purchased , 1866. 
P. 7432. Small distorted fish ; probably from Barrow-on-Soar. 
Presented by Ediuard Gibson, Esq. 
P. 4424. Greater portion of small fish with well-preserved pectoral 
fin; Barrow-on-Soar. Ennishillen Coll. 
Dapedius colei, Agassiz. 
1835. Dapedius colei, L. Agassiz, Poiss. Foss. vol. ii. pt. i. pp. 195, 217, 
pi. xxv. b. figs. 1-7, pi. xxv. c. 
Type. Imperfect head and trunk; British Museum. 
A species nearly equalling D. politus in size. Maximum depth 
of trunk about equal to its length (exclusive of the caudal fin) and 
four times as great as the depth of the caudal pedicle. Head with 
opercular apparatus occupying nearly one-quarter of the total length ; 
the external bones feebly ornamented with fine, sparse, rounded 
tubercles, usually arranged on the cranial roof on the radiating lines 
of growth. Marginal teeth very robust, and the majority bifid. 
Scales smooth, comparatively thin, rarely exhibiting punctations, 
and apparently not serrated. 
This species seems to be satisfactorily defined, but in the case of 
fragmentary and abraded specimens it is not always possible to 
distinguish between those that may be placed here and examples of 
D. punctatus, D. orbis, or immature D. granulatus. 
Form. 3f Loc. Lower Lias : Dorsetshire. 
The following specimens were all obtained from the neighbourhood 
of Lyme Begis :— 
P. 3545. Type specimen described and figured by Agassiz, loc. cit. 
p. 195, pi. xxv. b. The lower marginal teeth appear to 
be all bifid, and the right hyomandibular bone is well 
exposed. The specimen is much abraded, and the opercular 
bones are thus unusually smooth, while the lines of growth 
of some of the scales are rendered conspicuous. 
Ennishillen Coll. 
P. 7427. A nearly complete but much fractured fish, described and 
figured by Agassiz, loc. cit. p. 217, pi. xxv. c. 
Old Collection. 
