OP SOUTHERN INDIA. 409 



All the specimens examined have only the fibrous layer of the shell preserved ; 

 and it seems probable that the concentric plications are more distinct when the 

 uppermost glassy layer is preserved. In form the species closely resembles some 

 Melince (= TemcB), but it has not the structure of the shell of this genus. 



Localities, — South-west of Mullo or (common), Arrialoor, and Olapaudy; (rare) ; 

 in sandstone. 



Formation, — Arrialoor group. 



GEEVILLEA, JDefrance, 1820, (see p. 392). 

 Gehyillea solenoides, Defrance, PL L, Eig. 5. 



( Vide Zittel in Denksck Akad., Wien, xxv, pt. ii, p. 91). 



There is no specimen of this or any other species of Germllea in our collection, 

 nor in that formerly examined by Prof. Eorbes and now deposited in the Museum 

 of the Geological Society of London. D'Orbigny, however, gives a figure of a 

 fragmentary specimen, said to have been received from Pondicherry, and identifies 

 it with the well known European fossil characteristic of the middle and upper 

 series of cretaceous beds. I have given a copy of d'Orbigny's figure in order 

 to complete here the information regarding the species of Pelecypoda recorded from 

 the South Indian cretaceous rocks. 



The specimen is rather an imperfect one, but it does not appear to differ in 

 any essential character from the European fossil. It is most probably from the 

 Valudayur beds near Pondicherry. 



MELINA, Betzitis, 1788, (see p. 395). 

 Melina valida, Stoliczka, PL XXII, Eig. 1. 

 Mel. testa magna, crassa, sub-quadrangula, tonga, postice late suh-rotundata ; 

 margine cardinali rectiusculo, area cardinali interna lata, canalihus transversis, 

 rectis - in speciminibus adultis circa 25 - instructa ; umbonihus moderate projicienti- 

 bus, angustatis ; infra umbones insinuata, valde incrassata et hiante ; valvis modice 

 applanatis striis et lamellis incrementi tectis. 



A very large and robust species of an elongately sub-quadrangular shape, with 

 flattened valves and moderately projecting beaks. The hinge area is broad, and 

 in adult shells provided with about 25 straight ligamental canals ; its outer, or 

 upper, margin is in perfect specimens almost quite straight. Below the beaks is 

 a moderate insinuation, the edges of the byssal and pedal opening being very much 

 thickened, marked with coarse lamellar striae of growth, extending internally 

 sometimes to a depth of nearly two inches. Eragments of somewhat larger speci- 

 mens than the figured one are, below the hinge, nearly one inch thick. The surface 

 of the valves only exhibits concentric striae and lamellae of growth, very similar to 

 those of M, Bicordeana, d'Orb. 



Localities, — Karapaudy, in a brownish conglomeratic sandstone ; near Poodoor 

 in a whitish calcareous sandstone. 



Formation, — Arrialoor group. 



