OF SOUTHERN INDIA. 307 
2. MAmMMILia carnatica, Stoliceka, Pl. XXII, Fig. 5. 
. Mamm. testa ovata, subglobosa, levigata, spira brevi, subacuta; anfractibus 
4-5, paulo convexis, suturis simplicibus junctis, ultimo maximo, inflato, vir latiore 
quam alto; apertura semilunari, labio calloso, umbilico valde angustato. 
Spiral angle about 110°. 
Height of shell : its width (considered as 1-00) sik ae .. 1°20. 
Height of last whorl : its width ( ie Jaap) ee a nee 10:09} 
This small ovoid shell bears a remarkable resemblance to many of the recent 
species of Mamma, but the inner lip in our specimens is simply thickened, there 
being no perceptible trace of a funiculus in the very narrow umbilicus. The spire 
is rather obtuse, consisting of four or five slightly convex volutions, the last of 
which is very nearly as high as it is broad. The aperture is oval, pointed posteriorly 
and rounded anteriorly, but not produced. Its characteristic form readily distinguishes 
this species from the former, but it cannot be considered generically distinct. The 
nearest allied species are, as I have already said, living forms like the European 
Mamma (Natica) nitida, Donov., which was at first described as a Nerita, and others: 
Locality.— Between Andoor and Veraghoor, in greyish sandstone; very rare. 
Formation.—Arrialoor group. 
XXXIX. Fumily,—VANIKORID 4. 
Vanikorip#£, H. and A. Adams, Gen. I, p. 374; Neriropsip2 et Vanicorip”, Gray, 
Guide, 1857, pp. 51 and 121; Nerrropsip#, Chenu, Man. I, p. 330. 
Of the two genera referred by H. and A. Adams to this family only the 
animal of Vanikoro* is at present known, and that chiefly from the researches of 
Quoy and Gaimard. 
The animal of Vanikoro cancellata is small, with the head somewhat produced, 
posteriorly with large, membranaceous expansions on the sides of the foot; the 
tentacles are short, conical, with the eyes at their outer base; the rostrum is pro- 
duced and wrinkled, but it is not known whether it is retractile or not; the jaws 
are stated to be horny and flat, the lingual membrane broad, short and provided 
with only two series of teeth. The operculum is horny, thin, ovate, subspiral, com- 
posed of very few, indistinct volutions. 
The shell is ovate, globose, consisting of a few rapidly increasing whorls ; the 
surface usually ornamented with spiral and transverse strie or ribbings, rarely smooth ; 
aperture roundish, large, with the outer lip entire, and the inner lip more or less 
thickened. 
The following genera have to be placed in this family :— 
1. Vanikoro, Quoy and Gaimard, 1832; (Narica, Recluz, 1841, D’Orbigny in 
Fauna des Antilles, tom. IT, p. 39). Shell moderately thick, globose ; last whorl very 
large ; surface of shell spirally striated, cancellated or transversely ribbed, sometimes 
* One of the Pacific Islands, where they observed the animal of Vanik. cancellata (vide Zoologie 
d’ Astrolabe, Vol. IT, p. 239.) 
