Or 
OF SOUTHERN INDIA. 35 
3. PHASIANELLA CONULA, Stoliczha, Pl. XXIII, Fig. 15. 
Ph. testa subconica, spira acuminata, moderate-longa ; anfractibus 6, paululum 
convexis, levigatis, sutura timpressa junctis, ultimo subinflato, spira aliquantum altiore ; 
apertura ovali, postice acuta, antice lata atque rotundata, labio crassiusculo, labro 
tenut. 
Spiral angle 64°; sutural angle 7°. 
Height of aperture : total of shell (consd. as 1:00) a sor NUKE 
» Of penultimate whorl : its width( ,, eee) ae nga AURGSO), 
A small, conical shell, composed of about six volutions, which are slightly 
convex and smooth. The last whorl is somewhat more inflated in proportion with 
the rest, and higher than the spire. The aperture is oblique, posteriorly remarkably 
pointed and anteriorly broadly rounded; the outer lip is sharp, the inner lip 
somewhat thickened. There is a very slight indication of a fissure. 
This species resembles in form Ph. Sowerbyi, VOrb. (Ph. striata, Sow.) from 
the Blackdown Greensand, but it has no trace of spiral striation. 
Locality.—8.-W. of Comarapolliam ; very rare. 
Formation.—Arrialoor group. 
b. Sub-family,—TURBININ A. 
H. and A. Adams, Gen. I, p. 391; Chenu, Man. I, p. 343; Gray, Guide, 1857, rvrzin4, p. 142. 
The shells of the rvzzivin# are distinguished by their convex, generally thick 
whorls and a subcircular aperture, the margins of which are internally usually 
callous and smooth, while the edge of the outer lip is sharp, more or less undulating, 
according to the presence or absence of spiral ribbings on the external surface ; 
the operculum has a round shape similar to the aperture, and mostly consists of a 
few rapidly increasing whorls. 
The genera constituting this sub-family are generally known to conchologists 
under the old name Turbo of Linné. Philippi, though admitting the necessity 
of generic sub-divisions in Trochus, objects to them in Turbo, and Deshayes groups 
the species into “umbilicated” shells and such as have a “perforated” or solid 
columella. Generic distinctions in the rvrziviv# are not very urgently required, 
because the number of recent species is not very large, yet when we come to class 
the fossil species, the divisions pointed out by H. and A. Adams, Gray and others, 
are at least extremely convenient, and they ought, therefore, to be accepted unless 
direct proofs to the contrary can be given through the examination of the shells 
and animals. ' 
The following genera will be found recorded in the works above mentioned :— 
1. Turbo, Linné, 1858 (H. and A. Adams, Gen., I, pp. 391 and 392). 
It seems to me that it is really impossible to determine any limit between the 
species referred by H. and A. Adams to Turbo and those called Senectus. The 
only way partially to retain that distinction would be to restrict the former name 
