ICHTHYODOK ELITES. 
143 
The following specimens exhibit a more tuberculated ornament 
than those enumerated above, and are thus typical examples of the 
variety tuberculatus :— 
P. 243. Very small imperfect spine; Longton, Staffordshire. 
Weciver-Jones Coll. 
P. 5529. Small spine; probably from the Black-shale Coal, Tibshelf 
Colliery, near Alfreton, Derbyshire. 
Presented by Edward Wilson, Esq., 1888. 
P. 3143-4. Right and left spines of large size, much worn at the 
apex; Low Main Seam, Newsham, near Newcastle-on- 
Tyne. Enniskillen Coll . 
P. 4176-7. A still larger specimen, 0*16 in circumference at the 
base ; also an imperfectly preserved smaller spine ; News- 
ham. Enniskillen Coll. 
38149. Spine 0*335 in length, with worn apex ; Airdrie, Lanark¬ 
shire. Presented by Mr. Hair, 1857. 
21975 a. A comparatively slender spine, and a much worn larger 
spine ; Carluke, Lanarkshire. Purchased, 1848. 
21975. Two small spines ; Carluke. Purchased, 1848. 
P. 3139-40, P. 3142, P. 3145. Five large spines; Dalkeith. 
Enniskillen Coll . 
P. 6235. Fragment of spine; Dalkeith. 
P. 4181. Basal portion of spine; Queen’s Co., Ireland. 
Enniskillen Coll „ 
The following examples of the broad triangular dermal spines of 
Gyracanthusformosus are also contained in the Collection:— 
P. 2264. Small specimen measuring about 0'14 in height and 0-09 
across the base ; Knowles Shale, Fenton, N. Staffordshire. 
Egerton Coll. 
P. 3149. Larger specimen ; Longton, 1ST. Staffordshire. 
Enniskillen Coll. 
P. 3150. Three specimens, apparently exhibiting a few tubercles, 
either in the form of a superficial ornament, or originally 
imbedded in an investing integument; Low Main Seam, 
Newsham, near Newcastle-on-Tyne. Enniskillen Coll. 
