OF SOUTHERN INDIA. 371 
anteriorly flattened and provided with a short groove, the outer lip is thin, but 
both lips are internally somewhat thickened and united. This species very much 
resembles Turbo (? Gibbula) arenosus, Sow. (Stoliczka in Sitz. Akad., Wien, 
1865, LIT, p. 534) from the Alpine Gosau formation, but it has the spiral striation 
more closely arranged and stronger. 
I am not certain whether this species is correctly placed in Gibbula, for it is 
almost quite as much allied to Zegule, but the columella does not appear to be 
twisted. Many Zziphini also are very similar, but they all have the last whorl 
more angular. 
Localities —Vylapaudy, Comarapolliam, Arrialoor, in whitish sandstone ; rare. 
Formation.—Arrialoor group. 
LXXXVIII. EUCHELUS, Philippi, 1847. 
1. EUcHELUS orNATUS, Stoliczka, Pl. XXIV, Fig. 10. 
Buch. testa subconica, crassiuscula, apice obtusiusculo; anfractibus 4-5, postice 
applanatis, deinde angulatis atque subconvexis, ultimo ad peripheriam rotundato, 
omninis postice striis spiralibus duabus, antice ternis granulatis ornatis, transver- 
saliter striolatis; basi convexa, spiraliter granulato-striata, anguste wmbilicata ; 
apertura fere circulart. 
Spiral angle 76°; sutural angle 8°- 10°. 
Height of shell : diameter of its basis (considered as 1-00) ee ele O: 
» Of one whorl : its width ( 7 Dp <p» a a. §=©0°40. 
This species is distinguished by the posteriorly flattened whorls, which are 
near the suture ornamented with two thinner, and on the anterior nearly straight 
portion with three somewhat stronger granulated spiral striz. Similarly granulated 
strize are also on the basis of the last whorl, which is narrowly umbilicated. The 
transverse strize of growth are very fine; the aperture is almost circular, the mar- 
gins being internally somewhat thickened. 
There is some doubt whether this species correctly belongs to Huchelus, as I 
have not been able to observe the characteristic tooth on the inner margin of the 
aperture, not being quite perfect, but the ornamentation, the form and thickness of 
the shell so thoroughly resemble several of the recent Hucheli that I could hardly 
believe it to be generically distinct from them, even were a labial tooth not distinctly 
developed. 
Localities.—V eraghoor and Comarapolliam, in light coloured sandstone; rare. 
Formation.—Arrialoor group. 
LXXXIX. TECTUS, Dontfort, 1810. 
1. TxEcrus TAMULICUS, Stoliczka, Pl. XXIV, Figs. 4-5. 
Tect. testa conica, spira regulari; apice mammillato; anfractibus circiter 
denis, planis, infra atque supra ad margies aliquantisper paulo tumescentibus, 
