OF SOUTHERN INDIA. 2il 



49. — Sph. BesmouUnsiana, Math., (Moidinsi, Bayle). Matheron's original figure would be 

 much sooner taken as that of a RadioUtes than that of a Spharubtes. 



50-56. — Sph. Hwnlnghaim, Desm., alata, d'Orb., sp., Coqnandi and Samanni, Bayle, cyliii- 

 dracea, Desm., sp., Toucasiana, d'Orb., sp., expaiisus, Duj; the last is quoted as a doubtful species. 



57. — Sph. Sli/riacus, Zittel, (Deakseh. Akad., Wien, vol. xxv, pt. ii, p. 151, pi. 26, figs. 5-7,) 

 is from the Alpine Gosau deposits. 



58. — Sph. Faujasi, Bayle, is quoted by Bosquet from Mastricht (S taring's Bodem van 

 Nederland) . 



Hippurites (vide Pictet and Camp., 1. cit., p. 58). 



59-66. — Hipp. corHtt-vaccmH??i, Bronn, sulcata, Defr., organisans, Montf., sp., bioculala, 

 Jjurack. , dilafafa, Defr., Sarthaoensis, Co ([., radiosa, J)esm. , Lamarc/cil, Bayle. 



67. — Hipp. Aniaudi, Coq., from the Charente and from Algiers (Geol. and Pal. de. la. Const., 

 p. 2M). 



68. — Hipp. Toucasiana, d'Orb., is retained as a distinct species from organisans by Zittel 

 (vide Denksch. Akad., Wien, vol. xxv, pt. ii, p. 140, pi. 23, figs. 1-6). 



69. — Hipp, exarata, Zittel, ibidem, p. 144. 



Pictet and Campiche (Pal. Suisse, 1. cit., p. 60,) add a list of doubtful species: H. Chilensis, 

 d'Orb., H. Fortisi, turriculata, fisluloidea, nana, contoria, maxima, fasciata, rugulosa, turricula, 

 dilatata, itnbricata, Zovetl of Catullo and H. jlexuosa of Spada and Orsini. 



70. — Hippurites (Barrettia) monilifera, Woodw., is from Jamaica (vide Geologist, v, p. 372). 



71. — H. Tcvana, Romer. 



72. — H. Si/riaca, Con., from Palestine, is somewhat allied to H. organisans. 



73-76. — H. Loftusi, colliciatus, corrugatus, and vesiculosus are noted by Woodward from 

 Persia (Quart. Journ. Geo). Soc, Lond., vol. xi, pp. 58-59). 



No species of Hippurites has as yet been found in our South Indian cretaceous deposits 

 with the exception of a fragment from a highly silicious conglomerate of the Arrialoor group. 

 This fragment has an elongately oval section, with a shallow broad almost smooth area on one 

 of the broader sides ; by one narrower side it was attached to another specimen, and the rest of the 

 surface is rather finely costulated, somewhat resembling the surface of H. cornu-vaccinum, Bronn. 

 The base shows the beginning of the air-chambers, and the rest consists apparently of the body- 

 chamber, but no internal ribs are traceable, and therefore the fragment may also have been derived 

 from a Spharulite. 



11-1%. — Of the two other cretaceous genera one species of each has been found, RadioUtes 

 miitalilis, n. sp., and SpharuUtes indica, n. sp. 



RADIOLITES, Lam., 1801, (see p. 237). 

 Radiolites mutabilis, StoUczka, PL XXI, Figs. 1-3 ; PL XXII, Fig. 3. 



Had. valoa inferiori majori, sub-conica, phts minusve elongata, depressiusctila, 

 apice adnata, transversaliter muUi-lamellata, area lata sub-triangulari ab apice ad 

 marginem apertur(B entensa, siib-excacata, sub-lcevigata, prope medium diiabiis costis 

 bifidis longitudinalibus inceqiialiter bipartita instriicta, ad apicem concamerata ; 

 valoa libera operculiformi, Iceoigata, striis incrementi concentricis notata, intiis lamella 

 cardinali, seu cartilaginigera, postice concaoa et oblique projiciente, ejusque marginibus 

 costis duabus longitudinalibus furcatis in valca altera congruentibus, et ad utrumque 

 lattis lamintB cardinalis jugo musculari elongato et ruguso instructa. 



The form of the lower valve is as usually very variable, more or less elongated 

 and conical, attached at the apex. The surface is strongly lamellated, the 

 lamellae being formed of the reticulated layer of the shell and traversed by various 



