86 
SELACHII. 
largo oval conical tubercles, radiately grooved, is arranged along the 
middle of the back and tail ; and two regular series of similar 
smaUor tubercles are placed on either side of the median line. 
Borm. ^ Loc, Upper Cretaceous (Turonian) : Sahel Alma, Syria. 
P. 4015-6, 49517. Tj-pe specimens figured in PI. IV. figs. 1-3. The 
second is preserved in counterpart. 
The first of these fossils consists of the much-crushed 
middle portion of the disk and anterior extremity of the 
tail. The caudal region is slender at its commencement, 
and a portion of one of the pelvic fins is preserved, dis- 
playing the thickened preaxial ray. The body is covered 
with fine shagreen ; and larger tubercles, viewed from 
below or only seen as impressions, have the characters 
and disposition idready noted in the specific description. 
The second fossil exhibits the complete anterior half of 
one of the pectoral fins, extending to the snout, in addition 
to portions of the skull, branchial arches, vertebral column, 
and pectoral arch. The pectoral fin is very broad, but 
rapidly tapers anteriorly. The region in advance of the 
pectoral arch is elongated, and is suggestive of an acute 
snout. The teeth are rounded and minute. The hinder 
portion of the fossil is much crushed, and only a few of 
the dermal tubercles are shown, scattered and displaced. 
Purchased, 1878, 1883. 
Raja similis) sp. nov. 
Type. IJermal tubercles, figured in PL lY. figs. 4, 5. 
A number of dermal tubercles from the Upper Eocene of Hamp 
shire are so similar to those of Raja that they may be provisionally 
associated with this genus. They are rounded or oval, and all 
pointed at one extremity ; the inferior surface is convex and smooth , 
the exposed surface is also slightly convex, and marked with a few 
delicate concentric and radiating ridges. No spine is preserved in 
the fossils, but a small one appears to have been affixed to the 
middle of most of the tubercles. 
Form. ^ Loc. Upper Eocene (Barton Clay): Hampshire. 
28094. Eleven specimens, including the types ; High Cliff. 
Presented by F. E. Edwards, Esq., 1852. 
29023. Four specimens ; Chutan. Cowderoy Bequest. 
