1844.] 381 



P. testa discoidea (lavigata), superne plana, inferne profunda umhiiicatd ; 

 anfractibus erassis, superne angustis, quinis, suhangvlatis. 

 Lat. ^. Crass, -j'g unc. 



Closely resembling the recent Planorbis contortus, which represents this 

 species in miniature. It is allied to the Planorbis cylindricus of Sowerby, 

 from the fresh-water teriiaries of the Isle of Wight, but differs in the 

 greater number of whorls, and their narrowness on the upper disk, which is 

 very slightly concave. 



8. Paludina atomus Brong. 



A little Paludina, which appears to be identical with the Paris basin 

 shell described by Brongniart under the name of Bulimus atomus, and riglitly 

 referred by Deshayes to the genus Paludina. 



9. Paludina Stricklandiana, nov. sp. (woodcut, fig. 6). 



P. testa globulosd, Icevigatd, politd, umhiiicatd ; spird depressd, obtusd ; 

 anfractibus 3 — 4 ; aperturd ovatd, superne angulatd, marginibus erassis. 

 Lon. ^ unc. 



A very minute but beautiful and distinct species, in form somewhat ap- 

 proaching Ampullaria. Its nearest ally is the Paludina globulus of Des- 

 hayes, a Paris basin shell, which is, however, imperforate, and not nearly so 

 globose as the Asiatic species. 



10. Melanopsis buccinoidea Auct. 



A single specimen from the burying-ground in the island of Vourla, 



1 1. Melania Hamiltoniana, nov. sp. (woodcut, fig. c). 



M. testd ovato-turritd, anfractibus septem, Icevigatis, longitudinaliter mullo- 

 costatis, costis subsinuatis. 



Lon. \ unc. 



Apparently a very fragile shell, of which usually only the impressions 

 remain. In sculpture it bears a close resemblance to a marine Chemnitzia. 



3. On the Remains of Fishes found by Mr. Kaye and Mr. 

 CuNLiFFE, in the Pondicherry Beds. By Sir Philip 

 DE Malpas Grey Egerton, M. P. 



The fish remains collected by Mr. Kaye and Mr. Cunliffe in the 

 neighbourhood of Pondicherry having been placed in my hands 

 for examination, I have endeavoured to discharge the task com- 

 mitted to me to the best of my ability, by comparing the Indian 

 fossils with analogous forms from other localities, and with the 

 figures and descriptions given by Agassiz in the "PoissonsFossiles." 

 The collection consists whoUy of teeth ; they are, generally speak- 

 ing, in bad condition, few of the placoid teeth retaining their bases, 

 a very essential element in the identification and description of 

 species. Before proceeding to detail the characters of the several 

 specimens, it may be advisable briefly to relate the results at which 

 I have arrived from the study of these ichthyolites. With the 

 exception of two specimens, the collection is entirely composed of 

 teeth of squaloid fishes. Of these two exceptions one belongs to 

 the Ganoid order and to the family of Pycnodonts, and it is pro- 

 bably a Sphcerodus ; the other is referred to the Cycloid genus 

 Enchodus, the teeth very closely resembling those of Enchodvs 



