OF SOUTHERN INDIA. 129 



described ; however, the surface of this latter shell had greatly suffered in preparing 

 the hinge line, and a very close comparison is now not easily made out. Both forms 

 were found at the same locality and in the same rock. 



Locality. — Moraviatoor, in brown earthy limestone. 



Formation. — Ootatoor group. 



8. Tellina [Pal^omcera] inconspicua, Soioerby, PI. IV, Figs. 6—8. 



1846. Psammohia ? inconspicua, Sow., apud Forbes, Trans., Geol. Soc, London, vii, p. 142, pi. xv, fio-. 18. 



1847. .■* Tellina Grangei, d'Orb., Voy. Astrolabe, Palaeont., pi. v, figs. 8-10. 



Tell, testa ovata, compressa, sub-csqmlateraU, parte antica longiori, p)(wlo 

 angustata, ad terminationem rotundata, parte postica breviori, late ac rotundate 

 truncata ; marginibtis superioribus declivis, anguhim 140° formantibus, marginc 

 inferiori lente curcato ; superjicie striis concentricis iiio'ementi instriictis ; plica- 

 tnra posteriori suh-obsoleta. Cardo valvce dextrce dente unico bifida elongato 

 anteriori instructiis ; dentibus laterulibns in utraque valva dnobiis, in valva dextra 

 fortioribus qiiam in v. sinistra ; sinu pallii prof undo, lata, ascendente, ad termina- 

 tionem tmiforme rotundata. 



This is a very characteristic form, and the second species of true Falceomoera. 

 The shell is transversally elongated, rather compressed, inequivalve, the anterior 

 part being somewhat longer than the posterior, though in some specimens the 

 difference is less conspicuous than in others. The anterior end is narrowly 

 rounded, the posterior rather broadly truncated. The surface of the valves 

 is finely concentrically striated. The lateral teeth are stronger in the right tlian in 

 the left valve, and of the cardinals I have only observed the long bifid tooth in the 

 riojht valve. 



The more regular wedge-shaped form and the almost total want of the posterior 

 plicature readily distinguish the present species from Fal. strigata, Goldf. 

 D'Orbigny identifies his Tellina Grangei with this species, but I have some doubt 

 that the identification is correct. D'Orbigny's form is in some respect allied to 

 our variety of T. adpressa, but is considerably more inequilateral. I have seen 

 d'Orbigny's original in the Jarclin des plantes at Paris, but the shell is so small 

 and indistinct that, I confess, I am not acquainted with any of our Indian Tellince 

 which I could confidently identify with it, and if the very young shell from which 

 d'Orbigny has described his species be really the same as F. inconspicua, it would 

 show that the posterior end becomes less distinctly ridged with advancing age. 



Localities. — Alundanapooram and Serdamungalum, in whitish calcareous and 

 bluish sandstone. 



Formation, — Trichinopoly group. 



2i 



