10 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Nov. 5, 



this species, I have not feared to describe it, and to give to it a new 

 name. In fact, this cast, by its elongated shape, its spiral angle, and 

 the convexity of its whorls, differs from all its congeners at present 

 known to me. The only specimen that I have examined is com- 

 posed of four whorls, but it is probable that it originally possessed 

 eight or nine. 



Its length is 6 centimetres. The last whorl must have occupied, 

 of itself, almost half the length of the shell. It is 3| centimetres 

 long, its diameter is 28 millimetres, and the spiral angle equals 39°. 



25. Macro cheilus avellano'ides, De Kon. PL III. fig. 4. 



Shell subfusiform, with an acute spire composed of six or seven 

 inflated whorls, which are rather flattened on the sutural side. The 

 last whorl is very large, and occupies more than half the total length 

 of the shell. The aperture is elongately suboval, and possesses no 

 callosities. The surface is smooth ; the test tolerably thick, especially 

 towards the sutures. Its spiral angle is about 70°. 



Of the two specimens of this species, the one possesses a length of 

 3| centimetres, and the other of 4| centimetres. The last coil of the 

 spire of the latter is 27 millimetres in diameter and 30 millimetres 

 in length. 



This species approximates to M. Sclilotheimi, d'Arch., but differs 

 from it by its spiral angle, by the length of its last whorl, and by the 

 absence of all ornament upon its surface. 



26. Nerif^a ?, n. sp. ? 



Among the fossils confided to me by Dr. Fleming is the internal 

 cast of a Gasteropod, which appears to possess the characters of 

 Nerincea, but which I am unable to determine ; none of the species 

 described by A. d'Orbigny, M. Eudes-Deslongchamps, and others 

 resemble it. 



The Punjaub specimen possesses the last six whorls of the spire, 

 the total length being 8 centimetres ; the diameter of the last coil is 

 A\ centimetres. This last has a siphon parallel to its lower edge, 

 probably produced by a tooth of the mouth. It is besides adorned 

 with from six to seven tubercles. The axis of the columella is very 

 thick ; the angle produced by the spire is 25°. 



It is probable that this species is not Carboniferous. The greyish- 

 white colour of the limestone of which the cast is formed, and the 

 crystalline nature and whitish colour of the still- adhering fragments 

 of the shell, lead me to suppose that there is here an error to rectify, 

 to which I therefore call the attention of Indian palaeontologists. 



27. Ceratites Flemingianus, De Kon. PI. VII. fig. 1. 



This magnificent species, which I dedicate to the learned gentle- 

 man to whom we are indebted for its discovery, is the largest of all 

 those that are known up to the present time. Unfortunately, Dr. 

 Fleming found but a fragment, representing apparently the body- 

 chamber and the larger portion of the chamber behind it. 



