OF SOUTHERN INDIA. 295 



33. — C. dmlala, Coq., Moii. Etage Aptien de I'Espagne, 1SG5, p. 127, is apparently a 

 Pti/chomi/a. 



33. — C. fruncata, Pusch, (Poleiis Pal., p. 77, pi. S, fig. 3, and Eichwald Leth. ross., 

 10 livr., p. 638,) from white chalk. 



34. — C. tmirica, Eichwald, ibid., p. 638, pi. 24, fig. 6. 



35. — Cmssatella borealis, Eich., ibid. p. 640, figured by Keyserling Petschora-reiso, pi. 17, 

 figs. 23-24, simply under the generic name of Cra^^aife^^fl, is supposed by Eichwald to be more 

 probably a neocomien than a Jurassic species ; but the form of the shell does not agree with a 

 Crassafella; it may rather be a species of Baroda (sub-f;im. tapesin^-e J , or perhaps some form 

 of the sub-family garlvj: (p. 113) or piiarellin^e (p. 36). 



36-40. — C. piisilla. Teiiouklensis, Baiideti, Plcteti, and Besvonxi are described by Coquand in 

 his Paleont. de la Pro v. Constantine, (Algeria). 



41-52. — C. Alaiamensis, cimeata, Belaioaremis, Evansii, linfea, lineata, Monmoutkemis, parvula, 

 pteropsis, suhplana, transversa, and vadosa are recorded by Meek in Check-list of cretaceous fossils 

 of North America, (Smiths. Misc. Coll., No. 177, 1864, p. 11). 



53-57. — C. grandls, compacla, Uvasana are noticed from California by Gabb (Pal. Calif., ii, 

 p. 244). In addition to these I may mention from Conrad's lower eocene (? cretaceous) beds 

 C. capricran'mm and palmida (Smiths. Misc. Coll., No. 200, 1866, p. 5). 



58-59. — C.perlata&niplanata of Conrad., (Am. Journ. Conch., ii, p. 104,) first noted from 

 tertiary rocks are subsequently (Am. Journ. Conch., iii, p. 270,) stated to be cretaceous. 



60.— G prora, Con., Am. Journ. Couch., v, p. 43, is described from Crosswicks, New Jersey. 



61. — Crassatella perplana, ( Scamhula, id., Con.), ibidem, p. 48, is noted from Haddonfield. 



62-63.— C. Rothii, Fraas, and C. Si/riaca, Con., (Wurt. Nat. Jahreshefte, xxiii, p. 234,) are 

 from Palestine. 



64. — C. ZiUeUiana, n. sp., and C. macrodonta, Sow., occur in the ujipermost beds of our South 

 Indian cretaceous deposits. 



CRASS ATELLA, Lam., 1799, (see p. 293). 

 1. Crassatella macrodonta, Soio., sp., PI. V, Figs. 12-lJ.. 



1832. Astarte macrodonta. Sow., Trans., Geol. Soc, London, iii, p. 417, pi. 38, fio-. 3. 



1865. Crassatella idem, Zittel, Denksch. Akad., Wien, xxiv, pi. ii, p. 150, — aim synonimis. 



C)'. testa elongato-trigonuta, incequilaterali, cmtice breviter rotundata, postice 

 longiore et oblique trimcata, margine subumbonali leviter insinuato, 2iostico declivi, 

 niarg. inferiore 2'>ostice flexuose curvato instructa, moderate inflata, carina obtusa ab 

 umbo)iibus ad marginem postero-inferiorem maxime productum decurrente ; lunula 

 areaque profundls, prima breviore quam altera sed latiore ; superficie in specimini- 

 bus junior ibus semper concentrice costulata, in adultis aut cequaliter crasse costulata, — 

 costulis in declivitate postica obsoletis fvar. sulcifera auctore Zittel), — aut minute 

 striata; cardine dentibus duobus cardlnalibus in utraque valoa et fossa cartilaginigera 

 profunda instructo, dentibus anterior ibus multo fortioribus quam posterior ibus, omninis 

 compressis ; dentibus lateralibus anticis parois, dente postico laterali in valoa sinistra 

 obtuso, elongato, in v. dextra fere obsoleto ; margine interna denticnlato. 



Length of shell : its height ... ... ... 0-84, - 0-90 



Thickness „ : „ ... ... ... O'CO - 0-65 



The persistency -with which the two forms, one strongly concentrically sul- 

 cated and the other only finely striated, occur together is very remarkable ; passages 



I c 



