spinacid.^:. 
33 
Genus SPINAX, Cuvier. 
[Regne Animal, vol. ii. 1817, p. 129.] 
Syn. Acantliidium, R. T. Lowe, Ann. & Mag. N. H. vol. iv. (1840), p. 422. 
Dorsal fin-spines present. Lower teeth broad and compressed, 
the apex of the crown greatly turned aside; upper teeth slender, 
erect, each with a long pointed principal cusp, and one or two small 
denticles on either side. 
Spinax bonapartei, R. Lawley, Yuovi Studi etc. 1876, p. 39 (name 
only).—Pliocene; Orciano and Yolterra, Tuscany. 
Genus SCYMNUS, Cuvier. /•*>- 
[Regne Animal, vol. ii. 1817, p. 130.] 
Dorsal fin-spines absent. Upper teeth small, pointed; lower teeth 
much larger, broad and compressed, triangular, erect in the adult, 
hut somewhat oblique in the young. 
Scymims majori, Lawley. 
1876. Scymnus majori, R. Lawley, Nuovi Studi sopra ai Pesci fossili 
etc. p. 38, pi. i. fig. 17. 
Type. Detached teeth. 
An imperfectly defined species, founded upon lower teeth with 
serrated edges, very similar to those of the living S. lichia. 
Form. S)' Log. Pliocene: Tuscany, Italy. 
47029. Three teeth ; Orciano. Purchased, 1875. 
The following species have also been founded upon detached teeth 
but there are no examples in the Collection:— 
Scymnus triangulus , J. Probst, Wiirtt. Jahresh. vol. xxxv. (1879), 
p. 175, pi. iii. figs. 35, 36.—Molasse; "Wiirtemberg. 
Scymnus trituratus , J. Probst, tom. cit. p. 176 ; also P. Yoetling, 
Sitzb. Ges. naturf. Pr. Berlin, 1886, p. 17: Corax tritu¬ 
ratus, T. C. Winkler, Archiv. Mus. Teyler, vol. iv. (1874), 
fasc. i. p. 27, pi. ii. fig. 13.—Bruxellian; Woiuwe St. 
Lambert, near Brussels. 
Scymnus acutus, J. W. Davis, Geol. Mag. [3] vol. v. (1888), p. 315; 
“ Young Carcharodon angustidens,” J. "W. Davis, Trans. 
Roy. Dubl. Soc. [2] vol. iv. (1888), p. 11, pi. vi. fig. 22.— 
r°c-o - Miocen e; Yew Zealand. 
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