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 
imperfect cranial shields, with other plates, in counterpart. 
Egerton Sf Enniskillen Colls. 
P. 4926. Remains of various plates of the head and trunk, partly 
in counterpart. Presented by Prof. J. Prestwick , 1885. 
39178. Fractured dermal bones. Bowerbank Coll. 
28861 b. Hinder extremitv 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:— 
P„ 5143. Series of eight plaster casts, figured loc. cit., woodcuts 1-6, 
8, 9. Egerton Coll . 
P. 5144. Paper model of tail of Coccosieus , as interpreted by Miller, 
figured ibid. p. 134, woodcut 7. Egerton Coll. 
