350 CRETACEOUS PELECYPODA 



confe7'Ussimis et alteris minutioribus radiantibus ornata ; area cardinali leviter 

 curvata, mulUdentata, 



Only the two figured specimens have been found of this species; the one 

 (on pi. 8) is large, somewhat irregularly gibbose, and has portions of the shell pre- 

 served; the other is a smaller, but complete cast of the left valve. The fine 

 reticulated surface of the shell is very peculiar and mostly characteristic of this 

 genus, as already noticed. 



Localities. — East of Parally, in a brownish earthy limestone ; north of Odium, 

 in a similar but still more earthy rock. 



Formation. — Ootatoor group. 



CUCULLiEA, Lamar ch, 1801, (see p. 337). 



1. (?) CucuLL^A iEQUATA, StoHczJca, PL XVII, Pig. 34. 



C testa rotundate sub-tetragona^ moderate convexa, cequilaterali, sub-lcevigata, 

 antice ac postice minute radiatim striata, solidula ; cardo in utroque latere dentibus 

 tribus sub-par allelis, paulo irregular ibus, instructus. 



The only valve yet found has been figured ; the beak and the ligamental area 

 are imperfect, and they must have been very small. The hinge shows about three 

 sub-horizontal ribs on either side, becoming somewhat irregularly connected near 

 the middle, but, on the whole, resembling those of recent and fossil species of 

 CuGullcea; however, as the ligamental area is not preserved, I do not regard 

 the generic determination as suflS.ciently certain, for the shell may represent a new 

 generic type. It is to be hoped that the discovery of better specimens will clear 

 up these doubtful points. The form of the shell is so characteristic that it could 

 not easily be mistaken for any other genus, excepting Axincea. 



Locality. — Ninnyoor, in a yellowish sandy limestone. 



formation. — Arrialoor group. 



MACRODON, Lycett, 1845, (see p. 336). 

 V 1. Macrodon ( ? Grammatodon ) Japeticum, i^orfi^s, PI. XVIII, Pigs. 6-11. 



1846. Area jajpetica, Forbes, Trans. Geol. Soc, Lond., vii, p. 148, pi. xvi, fig. 2-mc^em auctorum (11011 = 

 A. disparilis, d'Orb.). 



Mac. testa elongata, pertumida, crassissima, obliqua, antice hremore et sub-rotun- 

 data, postice producta, oblique truncata, regione ab apice ad terminationem postero- 

 inferiorem extensa sub-angulata seu obtuse carinata ; superficie striis crispiculatis et 

 sulcis incrementi tenuioribus et fortioribus tecta, medio radiatim costata : costis 

 in mlva dextra conspicuiter distantioribus interdumque minoribus alternantibm, in 

 valva sinistra magis approximatis ; omninis in terminatione antica et postice sub- 

 obsoletis; declivitate postica minute striata, sub-excavata, ad medium costula tenui 

 ab umbone postice extensa, prope peripheriam obsoleta, divisa, striis in speciminibus 



