OF SOUTHERN INDIA. 31 
gradually, and that it does not develope itself equally in different specimens of even 
the same species. Some specimens of Strombus or Pterocera have their wing perfect, 
although being scarcely of half the size of others which have it not. I rather 
think it probable, that R. Reussi is not different from R. Parkinsoni. 
Localities. Neighbourhood of Odium and Moraviatoor, 8. of Serdamungalum, 
8S. E. of Monglepaudy, in Trichinopoly district. 
Formations. Ootatoor and Trichinopoly groups. 
The references as to the occurrence of the species in Europe agree as to its 
belonging to the middle cretaceous strata, specially the Gault. 
2. ALARIA PAPILIONACEA, Gloldfuss, sp. Pl. I1., Figs. 9 and 10. 
1844. Rostellaria papilionacea, Goldfuss, III Petr. Germ. Gast. p. 18, Pl. 170, Fig. 8. 
1847-1862. *3 » > Reuss, Geinitz, Miller, Pictet, ete. 
Al. testa elongata, conica; anfractibus 8—9, subconvexis, transversiim costatis, 
ad suturam posteriorem spiraliter numerosissime striatis, ultimo anfractu spira longiore ; 
rostro brevi; ala simplict, crassa, postice ad marginem imteriorem anfractui penultimo 
adherente, ad exteriorem subacuta, antice rotundata, parum insinuata. 
Spiral angle 32°—38°, sutural angle generally 8°. 
In Goldfuss’ original figure of this species the wing is more sinuous on its ante- 
rior margin, but all subsequent authors agree, that this sinuosity is not so strong, 
and it appears, that the slightly different shape has been produced by pressure 
injuring the specimen. Our specimens as regards form are perfectly identical 
with the figures of Reuss (Bohm. Kreidef. 1845, Pl. 9, Fig. 6) and Geinitz (Char. 
Pl. 18, Fig. 8, and Verst. v. Kieslingswalde Pl. 1, Fig. 11). The specimens from 
the German Quadermergel and Pleener are mostly casts, and their whorls appear, 
therefore, to be much more convex than they actually are. Well preserved speci- 
mens of Al. papilionacea, when compared with Al. Parkinsoni, appear to have a 
much thicker shell, smaller number of ribs in one volution (12—16), and usually 
a shorter spire with a larger angle. The surface is usually smooth, covered with a 
layer of callosity, except on the uppermost whorls, which are finely striated. The 
strize near the upper or posterior suture are also a little stronger, but they are much 
more numerous than in Al. Parkinsoni. The transverse ribs are distant on the 
last whorl, forming elongated tubercles on the convexity and being obsolete near 
the suture and on the wing itself. 
Localities. EH. of Anapaudy, Andoor, Coonum, Koloture, Kolakonuttom, Shuta- 
nure, N. of Serdamungalum, N. of Alundanapooram ; N. of Karapaudy, Permapolliam, 
S. W. of Nulloor, in Trichinopoly district. 
Formations. Trichinopoly and Arrialoor groups; to the latter the three last 
named localities belong, and the specimens procured are only very few in number. 
The species is pretty common in Europe all through the middle eretaceous beds 
of Northern Germany, from Lemberg in Galiziainto Hanover. It has not, I believe, 
been recorded from any place south of the Alps, nor from England. 
