LAMNID JS. 
397 
49947. Seven teeth, including one of the supposed third upper 
series; Upper Chalk, Guildford, Surrey. Capron Coll. 
35652. Tooth; Upper Chalk, Norwich. Bayfield Coll. 
48956 a. Tooth ; Upper Chalk, Norwich. Bayfield Coll. 
P. 2357. Three teeth, probably of this species; Upper Cretaceous, 
Maastricht, Holland. Enniskillen Coll. 
42868. Nine teeth, mostly imperfect; Upper Cretaceous, Obourg, 
Hainaut, Belgium. Van Breda Coll. 
Lanina lata (Agassiz). 
1843. Otodus latus , L. Agassiz, Poiss. Foss. vol. iii. p. 271, pi. xxxii. 
fig. 2G. 
Type. Detached tooth. 
Teeth broad, much compressed, the inner coronal face smooth ; a 
single pair of extremely broad, acuminate lateral denticles. 
Form. Sf Loc. Danian : Holland. Upper Senonian : Syria. 
P. 1284. Typical tooth, labelled by Agassiz, and noticed, loc. cit.. ; 
Maastricht, Holland. Egerton Coll . 
P. 4585. Smaller tooth; Sahel Alma, Mt. Lebanon, Syria. 
Enniskillen Coll. 
Lamna semiplicata (Agassiz). 
1843. Otodus semiplicatus , L. Agassiz (ex Miinster, MS.), Poiss. Foss. 
vol. iii. p. 272, pi. xxxvi. fig. 32 (Pfig. 33). 
1845. Otodus semiplicatus, A. E. Reuss, Versteiu. bohm. Kreideform. 
pt. i. p. 5, pi. iii. figs. 20, 21. 
1872. Otodus semiplicatus, H. E. Sauvage, Bibliotli. Ecole Hautes 
Etudes, vol. v. no. 9, p. 26, figs. 25, 26. 
1875. Otodus semiplicatus, H. B. Geinitz, Pakeontogr. vol. xx. pt. ii. 
p. 209, pi. xxxviii. figs. 55-60 1 . 
1878. Otodus semiplicatus, A, Fritsch, Rept. u. Fische bohm. Kreide¬ 
form. p. 7, woodc. fig. 10. 
1888. Otodus semiplicatus, A. S. Woodward, Proc. Geol. Assoc, vol. x. 
p. 292. 
Type. Imperfect tooth; Munich Museum. 
Teeth robust, of considerable size, with a single pair of very 
broad lateral denticles, sometimes incompletely subdivided. Outer 
coronal face even, flat or slightly convex; a series of short parallel 
vertical wrinkles upon the basal portion of the crown both on the 
outer and inner face. Root with a considerable inward prominence 
immediately below the base of the crown. 
1 The originals of figs. 59 and 60-much resemble the supposed young teeth of 
L. sulcata. 
