OF SOUTHERN INDIA. 177 
9.—Ttruvia, Stoliczka, 1867. 
Testa ovata, sew conica, spira plus minusve elevata aut abbreviata; ultimo 
anfractu maximo, inflato; apertura lateraliter multo angustata, antice :canaliculata, 
postice acuminata ; columella solida, tortuosa, uni- seu bi-plicata; (labro intus eden- 
tulo; superficie teste levigata). 
We deduce these somewhat incomplete characteristics from the five species 
which are at present known, namely,— 
1. Liruvia (Pyramidetla) canaliculata, D’Orb., Pal. Frang. terr. crét. II, p. 104, Pl. 164, 
Figs. 3—6. 
2. 45 (Pyramidella) carinata, Reuss, Bohm. Kreidef, II, 1847, 1 JD, 1k Ob, 
Figs. 6 and 7). (Pyr.) subcarinata, D’Orb., Prod. vol. II, p. 191. 
oF e (Itieria) truncata, Pict. et Camp. Mat. p. 1, Pal. Suiss. 3me. ser., p. 218> 
Pl. LXIII, Figs. 1—4. 
3 (Itieria) wmbonata, Pict. et Camp. ibid. p. 220, Pl. LXIII, Fig. 5. 
globoides, Stol., a new species, described in the following pages, and figured 
Pl. XIV, Fig. 1. 
We unite also under the name Jtruvia forms, which differ considerably in 
the height of the spire; this being in the two first named species produced, and 
almost turreted, in Ié. globoides short, and in the two described by Pictet scarcely 
elevated at all. These are therefore exactly similar changes, to those we have already 
noticed in Jtieria. The reason, however, that we have separated the above named 
forms from Jtieria lies principally in the formation of the columella and that of 
the anterior canal. The columella is always solid, twisted, and causes the pre- 
sence of a short produced and slightly recurved anterior canal on the aperture, 
while in Jéieria the aperture is itself more produced, without forming a regular 
canal. Certainly this must be connected with some distinctions in the animals. The 
differences are, I am well aware, not absolutely sharp, just as they are not in scarcely 
any other genera, and transitions could or may be in time traced; but the distinc- 
tions are in any case quite as truly serviceable as those proposed between Pyrami- 
della and Obeliscus, perhaps even still greater. 
In Liruvia truncata, Pict. and Camp., two columellar plaits are known; all the 
other four species have only one plait, and in all cases they are placed anteriorly 
and are thus strictly columellar. No folds have been as yet observed on the outer 
lip in any of the five species, which all present a smooth surface on the exterior of 
the shell. The ventricose form of the last volution and the presence of a distinct 
canal are equally important distinctions between I¢ruvia and Syrnola. 
10. Nerinea, Defrance, 1825. 
a= 
S 
Testa turrita, perlonga, anfractibus numerosissimis, plus minusve applanatis 
composita; ultimo ad peripheriam basalem angulato, antice abrupte terminanti ; 
apertura angulari, antice sub-canaliculata ; columella plerumque solida; (—? inter- 
dum excavata) labio sepe tri-, labro intus bi-plicato, ejusque peristomate S-formi 
sinuato ; im anfractibus omninis fascia distincta, lineis minutissimis insinuatis ornata, 
postice infra suturam posita est. 
2X 
