LAMNID^. 
353 
Scapanorhjrnchus elongatos, sp. nov. 
Type. Head and anterior portion of trunk, shown, of two thirds 
the natural size, in PI. XVII. fig. 8. 
An extremely elongated species. Length of snout in advance of 
the mouth not less than three times as great as the width of the 
head at this position. Extent of the caudal fin not equalling more 
than one half the entire length of the trunk in advance of its origin. 
Teeth with the posterior face of the coronal cusp prominently 
striated, scarcely differing from the teeth of S. lewisii. 
Form. ^ Loc. Upper Cretaceous (Senonian) : Sahel Alma, Mount 
Lebanon, Syria. 
P. 4774. Type specimen, mostlj' shown, of two thirds the natural 
size, in PI. XVII. fig. 8. The outline of the slender snout 
is well exhibited ; the mouth is large ; the vertebral centra 
are much elongated; and the body is covered with fine 
dense shagreen. Several teeth of both jaws are preserved, 
all being slender, but those placed near the symphysis 
possess especially high and narrow crowns. 
Purchased, 1884. 
P. 4773. An imperfectly preserved fish, 0'645 in length, wanting 
aU the fins except the caudal. An impression of the inner 
face of an anterior tooth shows marks of the character- 
istic striations ; and the vertebrae are distinctly astero- 
spondylic, most being longer than deep. The distance from 
the mouth to the beginning of the caudal fin is about 
0-395 ; and the length of this fin is approximately 0-19. 
Purchased, 1884. 
Scapanorhynchns rhaphiodon (Agassiz)’. 
184-3. Lamna (fidontaspis') rhaphiodon, L. Aga.ssiz, Poiss. l-oss. vol. iii. 
p. 206, pi. xxxvii. a. figs. 12-10 (mm fig. 1 1). 
- 1842. Isunna (Odontaspis') rhaphiodon, II. U* Geinitz, Charact. Schicht. 
u. Petrefakt. sachs.-bbhm. Kreidegeb. pi. xvii. figs. 13, 14. 
‘ To this species also H. E. Sauvage (Bull. Soc. Gtol. France, [2] vol. viii. 
1880, p. 457 ) proTiaionally assigns Lanina trigeri, H. Coquand (Deseript. Gcol. 
Depart. Charente, voL ii. 1800, p. 98). The dimensions given, if correct, 
render the determination doubtful. 
Very similar teeth, from tlie Upper Cretaceous of Xew Jersey, Texas, Alabama, 
ansas, and Mississippi, U.S. A., are described under the name of Lamna iexana, 
p- Boemer, Kreidebild. von Texas (1852), p. 29, pi. i. fig. 7 ; see also J. Lcidy, 
^P. GeoL Surv. Teri-it. vol. i. pt. 1 (1873), p. 304, pi. xviii. figs. 46-50, and 
D. D. Cope, Und. vol. u. (1875) p. 2%. 
