1862.] DE KONINCK INDIAN FOSSILS. 17 



43. Acrodtjs Flemingiantjs, De Kon. PI. VIII. fig. 5. 



Teeth of a subtriangular shape when seen in front, and sub- 

 ellipsoidal when seen from above. Enamel very shining, of a dark- 

 brown colour, occupying almost half the entire length of the tooth, 

 and producing on it a pointed eminence. The surface is furrowed 

 by small, longitudinal striae, which are gently bent towards the cul- 

 minating point of the tooth ; they are strongly marked at the base, 

 and become almost completely obliterated on the crest of the enamel. 

 The basis is very much compressed, slightly arched in the centre, and 

 tolerably porous. 



Two specimens of these teeth, one 15 millimetres wide by 8 long, 

 the other 7 millimetres wide, are in the collection of the Geological 

 Society. 



This species has some affinities with the A. Gaillardoti, Ag. They 

 differ principally by the much more arched shape of the base in this 

 species. From the Productus-limestone of Vurcha. 



44. Saueichthts ? Indictts, De Kon. PI. VIII. figs. 6, 7. 



The teeth which I attribute, with some doubt, to the genus Sau- 

 richihys (established by Agassiz), on account of their compressed 

 shape, are very small, very shining, and of a brownish colour. Of 

 the two specimens examined, one is 2, the other 6 millimetres in 

 length. This last is strongly striated at its basis, and resembles that 

 of S. Mougeoti, Ag., and is a little more compressed than the other, 

 of which the surface is entirely smooth. Both have the upper ex- 

 tremity very pointed, the sides sharp, and transverse section sub- 

 oval. From the Productus-limestone of Vurcha. 



EXPLANATION OF PLATES I. to VIII. 



(The specimens are in Dr. Fleming's collection, or in the Geological 

 Society's Museum.) 



Plate I. 



Fig. 1. Fenestella ? Sykesii, De Kon., front view, natural size. 



2. Phyllopora ? cribelhim, De Kon., natural size. 



3. Phyllopora ? Haimeana, De Kon., natural size. 



4. Polypora fastuosa, De Kon., natural size. 



4 a. An enlarged portion of the same. 



5. Betepora ? lepida, De Kon., natural size. 



5 a. An enlarged portion of the same. 



Plate II. 



Fig. 1. Alveolites septosa?, Flem., natural size. 



1 a. An enlarged portion of the same. 



2. Isastrcea arachno'idea, De Kon., natural size. 



2 a. Two calyces of the same, three times the natural size. 



3. Fenestella megastoma, De Kon. Front view, natural size. 



4. CMsiophyllum Indicum, De Kon., natural size. 

 4 a. A transverse section of the same. 



5. Philocrinus cometa. De Kon.. natural size. 



VOL. XIX. PART I. C 



