464 CEETACEOUS PELECYPODA 



specimens most closely resemble some of the figures given by Peuss in his Bohm. 

 Kreidef., pi. 27. Reuss refers these specimens from the Ptener-limestone to 

 Nilsson's JE. lateralis, and is followed in this by Ooquand, but it seems more pro- 

 bable that they belong to the present species. 



Localities, — North by east of Odiumj in a silicious sandstone (smaller valve), 

 west by south of lUpagoody (in a brown finely oolitic soft rock (three larger valves). 



Formation. — Ootatoor group. 



In Europe E. canaliculata characterizes the middle series of cretaceous deposits. 

 It was found in the greensand of England, in the Carentonien and Eotomagien 

 of Prance, and in similar beds of Belgium and Germany. 



GBYPH^A, Lamarck, 1801, (see p. 454). 



1. Gryph^a PoonooRENSis, Stoliczha, PL XXX Y, Pig. 5. 



Gryph. testa regulariter ovato elongata, valva majore moderate tumida, fere 

 cequilaterali, umhone valde incurvata, intorta, costulis radiantihus fcirciter 16 J, 

 interspatiis multo latioribus separatis, et striis incrementi tenuibus, ornata. 



Only the figured specimen has been examined of this interesting species ; its 

 larger valve is nearly quite regularly ovately elongated, moderately convex, 

 gradually sloping posteriorly, with the beak strongly incurved, but barely twisted ; 

 the surface is ornamented with rather thin, radiating ribs separated by Diuch broader 

 interspaces. Striae of growth very fine. The smaller valve has not been seen. 



Locality, — Near Poodoor, in a pinkish limestone. 



'Formation, — Ootatoor group. 



The only cretaceous species which bears some resemblance to the Indian fossil 

 is Ostrea Cerberus of Coquand (Monog. Ostr. cret., p. 166, pi. Ixvi, figs. 3 — 4), 

 but the ribs in that species are much stronger and fewer in number. 



2. Gryph^a Akbialooeensis, Stoliczka, PL XLV, Pigs. 13 — 14, and PL XL, 



Pig. 9. 



GrypJi. testa linguiformi curvata, apice sub-obtusa, postice rotundata ; valva 

 inferiore (dextraj convexiuscula, prope umbonem scEpissime sessili, umbone aut indis- 

 tinct o aut breviter intorto ; valva altera vix minor e, plamilata, vertice nonnunquam 

 mammillato : ambabus sub-lcevigatis, striis incrementi sub-lamellatis tectis, marginibus 

 internis prope iimbones minute crenulatis. 



A small linguiform and smooth species, with the lower valve moderately 

 convex and usually attached near the umbo, which is small, either indistinct, or 

 laterally incurved. The upper valve is only a little smaller than the lower, and 

 sometimes with a mammillate apex, but not twisted. 



