﻿3S6 CROSSOPTERYGII. 



38556, 42037, 46023. Three fragments of mandible ; Airdrie. 



Purchased, 1864, 1870, 1874. 



P. 5179. Portion of mandibular ramus wanting the external layer 

 of ganoine, displaying a portion of the series of small 

 teeth, and three large inner teeth, of which the second 

 (i. e. that upon the most anterior internal dentary bone) 

 shows the indentations characteristic of il Jthomboptychius" '; 

 Deep Mine, Longton, North Staffordshire. This specimen 

 is noticed by J. Ward, Trans. N. Staffs. Inst. Mining 

 Engin. vol. x. p. 167. Purchased, 1885. 



P. 3311. Six large teeth ; Deep Mine, Longton. EnnisJcillen Coll. 



P. 249. Large, transversely-banded tooth ; Knowles Ironstone, 

 Fenton, North Staffordshire. Weaver- Jones Coll. 



P. 793. Large transversely banded and indented tooth ; Deep Mine, 

 Longton. Egerton Coll. 



P. 3279. Three ring-vertebra3 ; Longton. EnnisJcillen Coll. 



40175, 42001. Scales and bone-fragments, the second group doubt- 

 fully of this species ; Airdrie. Purchased, 1866, 1870. 



46024-25. Group of small " decorticated " scales, and two asso- 

 ciated scales of the lateral line ; Airdrie. 



Purchased, 1874. 



P. 361. "Decorticated" scales; Airdrie. Purchased, 1881. 



P. 4801. Similar large scales; Airdrie Blackband, Carnbroe. 



Armstrong Coll. — Transferred from Edinburgh Museum, 1884. 



P. 3314. Group of similar scales, a few showing the ganoine layer ; 

 Dalkeith. EnnisJcillen Coll. 



P. 802-4. Three groups of similar scales, some showing the ganoine 

 layer ; locality unknown. Egerton Coll. 



Megalichthys laticeps, Traquair. 



1836. Megalichthys, S. Hibbert (in part), Trans. Roy. Soc. Edinb. 



vol. xiii. pi. xi. iigs. 2-8. 

 (?) 1844. Diplopterus robertsoni, L. Agassiz, Poiss. Foss. vol. ii. pt. ii. 



p. 162 (name only). 

 1884. Megalichthys laticeps, R. H. Traquair, Proc. Roy. Phys. Soc. 



