or SOUTHERN INDIA. 479 



Sb.—Anomia lineaia, Gabb, Pal. Calif., vol. i, p. 203, pi. 26, fig. 190. 

 .36. — A. Vancouverensis, Gabb, ibidem, vol. ii, p. 202, pi. 33, fig. 102. 

 ^T .—Placunanomia inornata, Gabb, ibidem, vol. i, p. 217, pi. 32, fig. 288fl. 

 38. — Biploschiza cretacea, Conr., Am. Journ. Couch., ii, p. 77. 



39. — Anomia variata is the only species occurring in the South Indian cretaceous de2)osits. 



ANOMIA, Linne, 1757, (see p. 477). 



1. Anomia variata, StoUczka, PI. XLVIII, Figs. 9 — 12. 



An. testa superiore rotimdata seu rotimdate ovata, teiiui, convexa, siih-lceoigata, 

 sen variatvm et irregularlter costulata ; aplce sub-marglnali, incUst'mcto, obtuse 

 iiicurco ; margiiie cardiuaU injlexo, iiitus paulo incrassato ; fovea ligamentali parva, 

 transversa. 



A small species vni\\ the tipper valve of an orbicular or roundly-ovate shape, 

 generally strongly convex, nearly smooth, (the surface being probably corroded), 

 or with irregular moderately elevated transverse, curved ribs ; the margins are very 

 thin, entire, or slightly undulating, evidently depending upon the character of the 

 surface on which the species is sessile ; the beak is indistinct, sub-marginal ; the 

 cardinal margin is somewhat inflexed, internally slightly thickened, with an indis- 

 tinct transverse Ugamental groove below the beak. The lower or perforated valve 

 has not been observed. 



Locality. — ComarapoUiam, in a soft, coarse siliceous sandstone. 



Formation. — Arrialoor group. 



