BARBATIA, 41 
Affinities.—Barbatia rotundata appears to be closely related to d’Orbigny’s! 
Arca Raspailli, but without seeing specimens of the latter, and with only one 
example of the former before me, I am unable to determine their relationship. 
B. rotundata is much smaller than the figured forms of A. Raspailli, and seems to 
be proportionately more convex. 
B. Hugardiana (a Orbigny) is proportionately longer and more coarsely ribbed. 
B. Galliennei (V Orbigny) is not so high posteriorly. 
T'ype.—Bristol Museum, 
This is the only specimen I have seen. 
Distribution.—Blackdown Greensand. 
BARBATIA VENDINENSIS (d’Orbigny), 1844. 
1844, ARCA VENDINENSIS, A. d'’Orbigny. Pal. Frang. ‘err. Crét., vol. iii, p. 220, 
1850. 
1866. 
1871. 
? 1897. 
pl. ecexv, figs. 4—7. 
— Prodr. de Pal., vol. ii, p. 164. 
F. J. Pictet and G. Campiche. Foss. du Terr. Crét. 
Ste. Croix (Matér. Pal. Suisse, ser. 4), pt. 3, p. 474. 
F. Stoliczka. Paleont. Indica, Cret. Fauna S. India, 
vol. iil, p. 843 (Barbatia). 
A. Fritsch. Stud. im Gebiete der bohm. Kreideformat. 
vi, Die Chlomeker Schichten, p. 57, 
fig. 63. 
An imperfect right valve from the Chalk Marl (Meyer’s Bed 10) of Dunscombe, 
in Mr. Meyer’s Collection, probably belongs to this species. 
BarpatiA GALLIENNEI (d’Orbigny), 1844. Plate VII, figs. 9 a, b. 
1844, Anca GaLLIENNEI, A. d'Orbigny. Pal. Franc. Terr. Crét., vol. ili, p. 218, 
1850. 
1866. 
1867, 
1871. 
1873. 
1895. 
pl. ecexiv. 
— Prodr. de Pal., vol. ii, p. 164. 
FE. J. Pictet and G. Campiche. Foss. Terr. Crét. de 
Ste. Croix (Matér. Pal. Suisse, ser. 4), pt. 3, p. 478. 
BE. Guéranger. Album Pal., p. 16, pl. xxi, fig. 4. 
FE. Stoliezka. Palwont. Indica, Cret. Fauna S. India, 
vol. ili, p. 843 (Barbatia). 
H. B. Geinitz. Das Elbthalgeb. in Sachsen (Palewon- 
tographica, vol. xx), pt. 1, p. 220, pl. xlviii, figs. 
20—22. 
E, Tiessen. Zeitsch. d. deutsch. geol. Gesellsch., vol. 
xlvii, p. 482. 
- 1% Pal. Frane. Terr. Crét.,’ vol. iii (1847), p. 766 (nom. mut.) ; ibid. (as A. Reguieniana), p. 239, 
pl. ceexxvi, figs. 1, 2; ‘ Prodr, de Pal.,’ vol. ii (1850), p. 196, No. 187. 
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