sprsAciB^. 31 
Centrina bcutanii, R. Lawley, Nnovi Studi sopra ai Peaci fossili 
etc. 1876, p. 39, pi. i. fig. 18. 
Detached teeth from the Miocene of Castries, Herault, France, 
have also been referred to Centrina by P. Gervais, Zool. & Pal. Got. 
(1867-69) p. 238, pi. xlvii. fig. 5. 
Genus ACANTHIAS, Risso. 
[Hist. nat. prod. Europe me'rid. vol. iii. 1826, p. 131.] 
Syn. CentrophoroideS) J. W. Davis, Trans. Roy. Dublin Soc. [2] vol. iii. 
1887, p. 478. 
Dorsal fin-spines present. Teeth rather small, triangular, com- 
pressed, with the apex much turned aside, one margin of the crown 
forming the functional cutting-edge ; similar in both jaws. 
Acanthias latidens (Davis). 
1887. CentropJurroiden latidens, J. \V. Davis, Trans. Roy. Dublin Soc. 
[2] voL iii. p. 478, pi. xv. fig. 2. 
Type. Anterior portion of fish ; British Museum. 
The only known examples of this species being very imperfect, it 
cannot be satisfactorily defined. No character is shown by which 
it can be separated from Acanthias. It has the form and propor- 
tions generally characterizing this genus: the upper teeth exhibit 
the same obliquity of the crown as the lower, only differing in their 
smaller size. The shagreen granules are similar to those of such 
recent species as A. blainvUlei. 
Form. 4' Loe. Upper Cretaceous (Turonian) : Sahel Alma, Mount 
Lebanon, Syria. 
P. 4021. Type specimen. Purchased, 1883. 
P. 49467, 49470. Two fragments, showing shagreen, dorsal spines, 
and vertebrae. Purchased, 1878. 
To this genus the following detached teeth have also been pro- 
visionally referred. They cannot be distinguished from the lower 
teeth of Centrophorus, hut not being accompanied by any teeth 
similar to those of the upper jaw of the last-named genus, the 
present determination is perhaps correct. 
Acanthias radicans, J. Prohst, Wurtt. Jahresh. vol. xxxv. (1879), 
p. 1(3, pL iii. figs. 31, 32. — Molasse ; Baltringen, Wiir- 
temberg. 
