80 CRETACEOUS GASTROPODA 
From America a large number of forms belonging to this sub-family is known. 
Gabb, in his catalogue,* enumerates three species of Voluta and ten species of 
Volutilithes. But I am afraid that all those species with “surface markings 
unknown,” and represented in outline only (suchas V/. biplicata, nasuta, §c., Sc.), 
will ever remain dead letters to any subsequent observers, unless better des- 
criptions and figures, or rather better specimens, be supplied. In his Paleontology 
of California (I, p. 102) Gabb describes one species previously named by 
Shumard, Volutilithes (Volutalithes, p. 243) Navarroensis. Other American species 
may have been published, which I have not had an opportunity of becoming 
acquainted with. 
The ten Indian species described by Prof. EH. Forbest have, during our recent 
examination, led to a totally different arrangement from that proposed by D’Orbigny. 
T have retained only fow of EH. Forbes’ species in this sub-family. The 
V. Trichinopolitensis I have identified with Fulgwraria elongata; two species, 
V. septemcostata and eincta of Forbes, I have not been able to identify at all, nor 
can I add anything to the knowledge of them. They must stand provisionally as 
placed by HE. Forbes. Voluta citharina I have transferred to the sub-family mzrrma 
and V. Camdeo and breviplicata to the Cancetzarip#. On the other hand, I have 
added to this sub-family the Pyrula Pandicherriensis, Forbes, under a new generic 
name, Ficulopsis, and nine other species chiefly belonging to Lyria and Volutilithes. 
Thus the total number of rozuvrzm.a, from the South Indian cretaceous rocks, as given 
in this paper, amounts to fifteen species, which will be found described under the 
following names: Scapha attenuata and gravida; Melo pyriformis ; Ficulopsis Pon- 
dicherriensis; Fulguraria elongata and multistriata ; Volutilithes accumulata, lati- 
septa, muricata, radula; Athleta purpuriformis and scrobiculata ; Lyria granulosa, 
crassicostata and formosa. 
Supposing now that the determinations, as here given, are, at least with regard 
to the sub-family, correet—a supposition which I believe is fully admissible on 
this point—and allowing on the other hand for the small area, wherefrom these 
fossils have been obtained, we may still without much hesitation form the econ- 
elusion, that the Hast had already during the eretaceous period a richer fama of 
roLutina than the West, an observation which holds correct also during the present 
geographical distribution of the different species. The vozurivm were fast disap- 
pearing from the Western seas, and were gradually more limited to those of the 
East, most probably, because the Eastern waters had preserved a higher temperature. 
So, for instance, the Vienna basin was inhabited during the miocene (neogene) period 
by several species of rozurzv#, while almost every trace of them disappeared in 
the Mediterranean Sea. Similar observations have been made in other parts of the 
Huropean seas. 
I may take here the opportunity of mentioning, that several species of 
vozuTiIvN= are known to occur in the cretaceous deposits of the Nerbudda valley 
* Proc. Am. Phil. Soc. VIII, pp. 149 and 150. 
+ Trans. Geo. Soc. London, 2nd. Ser. VII. 
