OF SOUTHERN INDIA. 247 
LIV. XHNOPHORA, Fischer, 1807. 
1.—XENOPHORA CARNATICA, Stoliczka, Pl. XIX, Fig. 24, 
Xenoph. testa trochiformi, late conica; anfractibus circiter septenis, planius- 
culis, regulariter crescentibus, marginibus anterioribus subcarinatis atque impression- 
ibus corporum alienorum irregulariter instructis, striis spiralibus vie conspicuis sed 
striis incrementi distinctis notatis ; basi ad peripheriam subcarinata, impressionibus 
irregulariter interrupta, paulo convexa, sublevigata, non wmbilicata; apertura 
quadrangulart, per-obliqua. 
Spiral angle 70°; sutural angle 4°. 
Height of one whorl : its width (consd. as 1:00) och 0:27. 
A small broadly conical shell, composed of about seven flattened and regularly 
increasing volutions, the anterior edge of which is sharpened, and more or less 
irregularly interrupted by the impressions of foreign objects, which are attached 
to it. The striee of growth are distinct, but there are very slight traces of a spiral 
striation perceptible. The basis is almost smooth, and gradually convex towards the 
centre, which is not umbilicated. 
The regularly conical form, the flat volutions with the impressions only on the 
anterior margin and the convexity of the basis are good characteristics of this shell. 
Locality —Comarapolliam, in lose siliceous sandstone ; very rare. 
Formation.—Arrialoor group. 
XXVIII. Family,—SOLARITDZ. 
Arcuirectonicip#,* H. and A. Adams’ Genera I, p. 241; ArcuirectourpZ, Gray, Guide, 
1857, p. 62; Sozarmpms, Chenu, Man. p. 232; SozarraD#, Deshayes, An. s. vert. foss. bass. 
de Paris, II, p. 657. 
The animals of the few recent genera of this family have, so far as they have 
been observed, a moderately expanded foot, adapted for walking; tentacles subulate, 
thickened, close together at the base, and folded; eyes sessile on the basis or near it 
externally on thickened bulgings; mantle enclosed, posteriorly with a rudimentary 
fold; gill cavity divided by a longitudinal fold (?); the proboscis is stated by Gray 
to be very long, cylindrical, completely retractile, but the existence of teeth on the 
radula is questioned by the same author. Operculum horny, spiral, flat or conical, 
consisting of numerous layers. 
The shells of the living and fossil species of Sozarimp” are spirally coiled, of 
a discoidal or broadly conical form, with a large open umbilicus, the edge of which is 
always more or less angular and generally crenulated ; the shell is not pearly+ within. 
* Architectonica or Architectoma of Bolten, as accepted respectively by H. and A. Adams and Gray, can 
have no claims of priority against such a universally known name, as Solarium of Lamarck, which is 
scarcely later is date of publication. 
+ Weshall refer again to the pearly structure of the shell, when speaking of the new genus Margaritella, 
Meek and Hayden, of the Trocuipz. 
