﻿5 1 2 ACTINOPTEKYGIl. 



P. 4625. Scale ; Muschclkalk, Bayreuth, Bavaria. Enniskillen Coll. 



28472. Large scale, showing wide overlapped area; Lettenkohl, 

 Bibersfeld. Purchased, 1853. 



28478. Three small scales in matrix ; Rhaetic Bone-bed, Crailsheim, 

 Wurtemberg. Purchased, 1853. 



28463. Two imperfect scales in matrix ; Rhaetic, Nellingen, Wiir- 

 temberg. Purchased, 1853. 



P. 1044. Three portions of bone-bed with scales ; Rhaetic, Crails- 

 heim and Hohenheim. Egerton Coll. 



11206. Small well-preserved scale ; Rhaetic, Aust Cliff, near Bristol. 



Mantell Coll. 



23153 C. Six scales, somewhat abraded ; Aust Cliff. Purchased, 1849. 



P. 3930. Imperfect scale ; Aust Cliff. EnnisTcillen Coll. 



P. 1043. Ventral scale, labelled Gyrolepis tenuistriatus by Agassiz ; 

 Rhaetic Bone-bed, Axmouth, Devonshire. Egerton Coll. 



The Collection also comprises several fragments of Rhaetic Bone- 

 bed exhibiting scales of Gyrolepis albertii, among remains of other 

 genera and species. 



Gyrolepis ornata (Giebel). 



1848. Amblypterus ornatus, C. G. Giebel, Neues Jahrb. p. 152, pi. ii. a. 



figs. 7-9, and Fauna der Vorwelt, Fische, p. 254. 

 1848. Amblypterus decipiens, C. G. Giebel, ibid. p. 154, and ibid. p. 255. 



[Associated head-bones and scales ; School of Mines, Freiberg, 



Saxony.] 

 1857. JRJiabdolepis ornatus, F. H. Troschel, Verhandl. naturh. Vereins 



preuss. Rheinl. u. Westph. vol. xiv. p. 16. 

 (?) 1865. Gyrolepis tenuistriatus, H. Eck, Form. bunt. Sandst. u. 



Muschelk. Oberschlesien, p. 71. 

 1888. Gyrolepis ornatus, W. Dames, Palaeont. Abhandl. vol. iv. p. 140, 



pi. xi. fig. 2. 



Type. Imperfect fish ; School of Mines, Freiberg, Saxony. 



A smaller species than the type. Trunk much elongated ; dorsal 

 fin almost completely in advance of the anal. Scales resembling 

 those of G. albertii, but relatively smaller. 



The type specimen is re-described by W. Dames, loc. cit., to whom 

 are due the synonymy and definition here adopted. 



Form. Sf Loc. Lower Muschelkalk : Province of Saxony, (?) and 

 Upper Silesia. 



Not represented in the Collection. 



