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SELACHII. 
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Scyllium curtirostre (Davis). 
1887. Thyellina curttfrostris, J. W. Davis, Trans. Roy. Dublin Soc. [2] 
vol. iii. p. 475, pi. xv. fig. 1. 
Type. Incomplete fish; British Museum. 
Teeth of lower jaw broad, the coronal cusp much inclined pos¬ 
teriorly, with indistinct lateral denticles, or destitute of these. 
Pectoral fins of moderate size; [other fins imperfectly known]. 
The known specimens do not attain a greater length than 0-4. 
Form. § Log. Upper Cretaceous (Senonian) : Sahel Alma, Mount 
Lebanon, Syria. 
P. 4022. Type specimen, described and figured by J. W. Davis, 
loc. cit. Purchased, 1833. 
49476. A less perfect specimen, probably of thi§ sp ecies, 0'338 in 
49471. Imperfect anterior portion of trunk, with pectoral fins. 
Purchased , 1878. 
Scyllium (?) tumidens, sp. nov. 
Type. Anterior portion of fish ; British Museum. 
Teeth apparently similar in both jaws, each with an erect prin¬ 
cipal cone and a single pair of large, slightly divergent lateral den¬ 
ticles ; base of principal cone and the lateral denticles tumid and 
marked with delicate vertical striae. 
Form. $ Loc. Upper Cretaceous (Senonian): Sahel Alma, Mount 
Lebanon, Syria. 
P. 4777. Type specimen, displaying the head from the inferior 
aspect, traces of about thirty anterior vertebrae, the pec¬ 
toral arch, and the right pectoral fin. The snout is very 
obtuse, and the head measures 0*047 in length. The 
teeth are numerous and relatively small, displaying the 
characters already noted in the specific diagnosis, and one 
is shown, of six times the natural size, in PI. XVI. fig. 6. 
The pectoral fin is acutely triangular, with a short base of 
insertion, and slender basal cartilaginous rays. 
Purchased , 1884. 
The following species have also been founded upon detached teeth, 
but there are no examples in the Collection:— 
Scyllium acre, J. Probst, Wiirtt. Jahresh. vol. xxxv. (1879), p. 171, 
pi. iii. fig. 2t. —Molasse ; Baltringen,AViirtemberg. 
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