OP SOUTHERN INDIA. 241 



49. — Sph. DesmouUnsiana,M.2ii\i., fMoulinsij Bsijle). Mat her on-' s original figure would be 

 much sooner taken as that of a Madiolites than that of a Sphoirulites, 



50-56. — BpJi. Hoeningliausi, Desm.^ alata, d^Orb., sp.^ Coquandi and Smmmmi, Bayle^ ci/lin- 

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



57. — Sph. Sti/rlacus, Zittel, (Denksch. Akad._, Wien^ vol. xxv, pt. ii, p. 151^ pi. 26^ figs. 5-7;) 

 is from the Alpine Gosau deposits. 



58. — Sph. Faujasij Bayle^ is quoted by Bosquet from Mastricht (Staring^'s Bodem van 

 Nederland) . 



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



59-66. — Hipp. cornu-vacci7ium, Bronn^ sulcata, Defr., organisans, Montf., sp.^ bioculata, 

 Jj Sim c'k. J dilatata, Defr., Sarlkacensis, Coc^.y radiosa, Desm., Jjamarckii, Bayle. 



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

 p. 224). 



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. Cliilensis, 

 d^Orb., H, Fortisi, turriculata, fistuloidea, nana, contoria, maxima, fasciata, rugulosa, turricula, 

 dilatata, iinhricata, Zoveti of CatuUo and H. flexuosa of Spada and Orsini. 



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



71. — H. Texana, Romer. 



72. — H. Syriaca, 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. Geol. 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 Sph6erulite. 



7 7 -IS. — Of the two other cretaceous genera one species of each has been found, Radiolites 

 mutahilis, n. sp., and Sphoerulites indica, n. sp. 



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

 ^Radiolites mutabilis, Stoliczka, PI. XXI, Eigs. 1-3 ; PL XXII, Eig. 3. 



Had. valva inferiori majori, sub-conica, plus minusve elongata, depressiuscula, 

 apice adnata^ transversaliter muUi'lamellata, area lata suh'triangulari ah apice ad 

 marginem apertures entensa, sub-excavata, sub-lcevigata, prope medium duabiis costis 

 bifidis longitudinalibus incequaUter bipartita instructa, ad apicem concamerata ; 

 valva libera operculiformi, Icevigata, striis incrementi concentricis notata, intus lamella 

 cardinally seu cartilaginigera, postice concavia et oblique projiciente, ejusque marginibus 

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

 latus lamince 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 



