600 SYSTEMATIC PALEONTOLOGY 



Central Europe. Senonian. Central Europe. Ootatoor Formation. 

 Southern India. Tricliinopoli Formation. Southern India. Arrialoor 

 Formation. Southern India. 



Family LIMIDAE 



Genus LIMA (Bruguiere) Cuvier 

 [Tableau 616mentaire d'histoire naturelle, 1798, p. 421] 



Type. Ostrea lima Linne. 



Shell auriculate, auricles unequal ; outline usually ovate, scoop-shaped 

 and obliquely truncated laterally; valves closed inferiorly but gaping 

 anteriorly and sometimes posteriorly ; exterior surface rarely smooth, gen- 

 erally sculptured with simple or imbricated radial striae ; umbones rather 

 prominent and distant ; hinge edentulous ; ligament internal, lodged in a 

 subumbonal pit ; pallial line simple ; single muscular scar excentric, nearer 

 to the posterior than the anterior margin. 



A genus indicated in the Carboniferous, culminating in the Cretaceous 

 and sparsely represented in nearly all the recent seas by white or colorless 

 shells, which may be attached by a byssus or may swim freely with a 

 motion similar to that of Pecten. 



A. Both anterior and posterior auricles developed. 



1. Radial sculpture overridden by the concentric on the medial por- 



tion of the shell Lima reticulata 



2. Concentric sculpture obsolete upon the medial portion of the shell. 



Lima serrata 



B. Posterior auricle obsolete, anterior auricle very large Lima obliqua 



LIMA RETICULATA Forbes 

 Plate XXXIV, Figs. 12, 13 



Lima reticulata Forbes, 1845, Quart. Jour. Geol. Soc., London, vol. i, p. 62; 



two text figures. 

 Lima reticulata Meek, 1864, Check List Inv. Fossils, N. A., Cret. and Jur., 



p. 7. 



Radula reticulata Conrad, 1868, Cook's Geol. of New Jersey, p. 725. 

 Radula reticulata Stoliczka, 1871, Mon. Geol. Survey of India, Palaeont. In- 



dica., Cret. Fauna Southern India, vol. iii, p. 416. 



Etymology: Lima, a file a name suggested, doubtless, by the rasping ex- 

 terior surface. 



