﻿290 ARTHRODIRA. 



35776, P. 6266. Median dorsal plate, in counterpart. 



Purchased, 1869, and Enniskillen Coll. 



43277. Imperfect median dorsal plate, showing keel. 



Purchased, 1871. 



(vii.) Gamrie (typical C. cuspidatus). 



28861-a. Two examples of the cranial shield, dorsal aspect, con- 

 siderably fractured. Purchased, 1854. 



39177. Crushed remains of dermal plates of head and trunk. 



Bowerbank Coll. 



47867. Much crushed and broken dermal plates of head and trunk, 

 with a few of the neural and hsemal arches and dorsal 

 fin-supports, lateral aspect, preserved in counterpart. 

 Some of the teeth are of the broad, blunt type described 

 as characteristic of C. oblongus; and the hinder outer 

 angles of the posterior ventro-lateral plates are produced 

 into unusually long spines. Purchased, 1877. 



P. 694, P. 3218-9. Specimen exhibiting several plates, including 



the inner aspect of an anterior dorso-lateral ; also three 



l imperfect cranial shields, with other plates, in counterpart. 



Egerton Sf Enniskillen Colls. 



P. 4926. Eemains of various plates of the head and trunk, partly 

 in counterpart. Presented by Prof. J. Prestwich, 1885. 



39178. Fractured dermal bones. Bowerbank Coll. 



28861 b. Hinder extremity of armour of trunk, with remains of the 

 neural and haemal arches of the axial skeleton. 



Purchased, 1854. 



The following specimens are noticed in the letters by Hugh 

 Miller, quoted in Quart. Journ. Geol. Soc. vol. xvi. (1860), pp. 128- 

 136:— 



Po 5143. Series of eight plaster casts, figured loc. cit., woodcuts 1-6, 

 8, 9. Egerton Coll. 



P. 5144. Paper model of tail of Coccosteus, as interpreted by Miller, 

 figured ibid. p. 134, woodcut 7. Egerton Coll. 



