222 
SELACHII. 
1^. Teeth with rounded or gently elevated crown, sometimes 
elongated and sometimes of irregular shape, commonly ascribed 
to Helodus Icevissimus, Agassiz 1 . 
P. 2o23. Six small series of flat teeth, more or less nearly perfect, 
resembling the specimen figured by F. M‘Coy, Brit. 
Palaeoz. Foss. pi. 3 i. fig. 17 ; Armagh. Enniskillen Coll. 
P. 2822. Three small examples ; Hook Point, Wexford. 
Enniskillen Coll. 
3d 193. Fourteen teeth, of irregular elongate shape, with gently 
rounded or raised crowns; Carboniferous Limestone, 
Oreton, Shropshire. Purchased , 1861. 
4,«225. About one hundred small teeth, of irregular shapes, more or 
less elongated and rounded ; Oreton. Baugh Coll. 
354aS-7, 35485—7. Six teeth ; Oreton. Purchased , 1860. 
P. 2621. Twenty-five irregular rounded teeth, some relatively large 
and approaching “ Chomatodus cinctus ” in characters; 
Oreton. Enniskillen Coll. 
42218, 42222. Twenty-four teeth, mostly much elongated and 
elevated in the middle : Oreton. Baugh Coll. 
42223-4. Two examples of two elongated teeth associated in 
natural sequence; Oreton. Baugh Coll . 
41190. Three associated elongated teeth, with a large coronal 
prominence at one extremity : Oreton. Purchased , 1868. 
P. 210, P. 221-8. Seven examples of relatively large teeth, with 
slightly elevated crowns, and two groups of three in 
series ; Oreton. Weaver-Jones Coll. 
P. 2325, P. 4538, P. 4539. Fifteen small teeth, mostly similar; 
Oreton. Enniskillen Coll. 
40330. Two associated small, flat, elongated teeth, two fused to¬ 
gether, and one imperfect broader tooth; Carboniferous 
Limestone, Clevedon, Somersetshire. Purchased , 1867. 
1 L. G-. de Koninck, Descr. Anim. Foss. Terr. Carbf. Belg. (1814), p. 614, 
ph %. 3; F. M‘Coy, Brit. Palaeoz. Foss. (1855), p. 630, pi. 3 i. fig. 17. 
Lophodus Icevissimus, L. G-. de Tvoninck, Fau ne Calc. Carbf. Belg. pt. i. (1878), 
p. 33, pi. iv. fig. 6 ; also J. W. Davis, Trans. Roy. Dublin Soc. [21vol. i (1883) , 
p. 404, pi. li. fig. 18. 
