Prof. E. Forbes on Fossil Invertehrata from Southern India. 145 



2. Cardium lucerna, sp. nov. PI. XVII. fig. 10. 



C. testa transverse oblonga, subinflata, subinaequilaterali, longitudinaliter crebrisulcata, 

 costis quadratis (28) obsolete squamosis, latere postico laevi, antico rostrato, rostro brevi, com- 

 presso, laevi ; umbonibus tumidis, concentrice substriatis. 



Length 1 inch. Breadth 1| inch. Thickness of united valves 0|fi inch. 



An elegant lamp-shaped shell, ornamented with longitudinal ribs, and having 

 one extremity prolonged into a smooth and compressed beak. In form it resem- 

 bles the living Cardium Cumingii described by Broderip. Its nearest ally is pro- 

 bably the Cardium subdinense, a species described by M. D'Orbigny from the Craie 

 chloritee of France. 



3. Cardium incomptum, G. B. Sowerby, MSS. PI. XV. fig. 16. 



C. testa convexa, oblique suborbiculari, radiatim costata, costis (20-22) prominentibus sub- 

 squamosis. 



Length 0^^ inch. Breadth 0/^ inch. Height of a valve Oj-^q inch. 



A Cockle of the same group with Cardium edule. The shell is tumid, more or 

 less obliquely round, and ornamented with radiating ribs, which are prominent and 

 separated by deep sulcations. 



Locality, Trinchinopoly. 



4. Cardium, intersectum, sp. nov. PI. XVIII. fig. 8. 



C. testa convexa, suborbiculari, subdepressa, subangulata, concentrice sulcata, striis ad an- 

 gulum posticum costa radiali obscura laevi interruptis, sulcis post radium fortiori bus. 

 Length Oy''^ inch. Breadth Oi inch. 



A somewhat depressed species remarkable for its peculiar sculpture. From the 

 beak to the angle of the siphonal side there runs a smooth, gradually enlarging ray 

 or obsolete rib, which interrupts the concentric striae of the remainder of the shell, 

 or rather separates the deep concentric striae of the anteal and central portions 

 from the deep transverse sulci in the space above the siphonal margin. 



There is only a single imperfect specimen of this very distinct species in the 

 collection. It is from Verdachellum. 



5. Cardium altum, G. B. Sowerby, MSS. PI. XV. fig. 13. 



C. testa oblonga, tumida, postice subtruncata, angulata, longitudinaliter substriata, antice 

 laevigata, in medio concentrice sulcato, sulcis regularibus, interstitiis aequantibus. 

 Testa decoriicatd reticulato-striata. 

 Testa juniori subquadrata, acute angulata. 

 Length 1/^ inch. Breadth ly^^ inch. Height Oy^^ inch. 



