﻿504 ACTINOPTERYGII. 



15511. Obscure remains of head, opercular apparatus, pectoral arch 

 and fin, and some anterior scales ; Eisleben, Province of 

 Saxony. The principal rays of the pectoral fin appear to 

 have been unarticulated. Presented by T. S. Law, Esq. 



43434. Left maxilla and mandibular ramus, associated with other 

 bones, much obscured by matrix ; Eiechelsdorf, Hesse. 



Presented by Kenneth Murchison, Esq., 1872. 



1992. Imperfect trunk wanting the head, pectoral and dorsal fins, 

 and showing only fragments of the other fins ; Mansfeld. 



Purchased, 1837. 



P. 2064. Greater portion of trunk, imperfectly preserved, wanting 

 the extremity of the tail, and the anal fin obscured by 

 matrix ; Eisleben. Egerton Coll. 



P. 836. Portion of squamation with anal fin, in counterpart; 

 Eisleben. Egerton Coll. 



15411. Six portions of the trunk, chiefly caudal region, one ex- 

 hibiting a good impression of the scales at the base of the 

 caudal lobe, indicating the upward extension of the body- 

 scales; Eisleben. Purchased, 1840. 



43432. Imperfect caudal fin ; Eiechelsdorf. 



Presented by Kenneth Murchison, Esq., 1872. 



P. 3405. Much crushed remains of the head, scattered scales, a 

 portion of the vertebral axis, and an impression of one of 

 the fins, probably of this species ; Eiechelsdorf. The 

 tuberculations upon the head-bones are more completely 

 fused into rugae than in typical examples of the species ; 

 but numerous impressions of scales appear to exhibit the 

 characteristic proportions and ornament. In the frag- 

 ment of the axial skeleton of the trunk, the space occupied 

 by the notochord is vacant ; but there are short, stout 

 neural arches with expanded bases, and a triangular 

 haemal element is opposed to each. EnnisJcillen Coll. 



A species allied to A. sedgwicki, from the Magnesian Limestone 

 of Marsden and Eulwell Hill, Durham, not yet satisfactorily defined, 

 is named A. MrJcbyi, E. Howse, Nat. Hist. Trans. Northumb. and 

 Durham, vol. vii. (1878), p. 171 (previously described by J. W. 

 Kirkby as A. sedgwicki in Ann. Mag. Nat. Hist. [3] vol. ix. 1862, 

 p. 269, and as Acrolepis, sp., in Quart. Journ. Greol. Soc. vol. xx. 



