262 
SELACHII. 
P. 2198. Fossil of a very similar character to the preceding, hut 
showing more anterior teeth. Egerton Coll. 
20600. A scattered group of teeth. Johnson Coll . 
20600 a. Small group of naturally arranged principal teeth, much 
abraded and broken. Johnson Coll. 
18989. Group of about twenty teeth. Purchased , 1854. 
P. 4174. A few scattered teeth, associated with two broken cephalic 
spines. Enniskillen Coll. 
32750. Group of small teeth. 
39148. Seven associated teeth. 
40092. Four teeth. 
P. 2201-2. Four teeth. 
Purchased , 1857. 
Bowerbank Coll. 
Purchased , 1866. 
Eaerton Coll. 
P. 2203. Four groups of teeth, either of this species or of H. rari- 
costatus. Egerton Coll. 
P. 2793. Seven teeth. Enniskillen Coll. 
P. 2791 a. Group of small teeth, partly arranged in natural series, 
probably referable to the young or a small individual of 
this species. Enniskillen Coll. 
39784. Group of small teeth. Purchased, 1862. 
38103. Large group of scattered small teeth, including some from 
the hindermost rows, associated with a few small fragments 
of cartilage, shagreen, and portions of two “/S phenonchi.” 
This specimen may be referred, without much hesitation, 
to the young of the present species Purchased, 1864. 
38127. Teeth and first dorsal fin-spine of a still smaller fish, either 
of this species or H. meclius. Purchased , 1864. 
It is impossible at present to distinguish the dorsal fin-spines of 
H. delabechei from those of II. meclius and II. raricostatus, and the}' 
are therefore provisionally grouped together below. The dorsal spine 
of H. cldabechei is shown in No. P. 3160, and that of E. meclius in 
No. P. 340; that of II. raricostatus is still unrecognized. The 
spine is robust, and the lateral ribs very numerous and closely 
