OF SOUTHERN INDIA. sis) 
length of the last. Similar characters, combined with a greater spiral and smaller 
sutural angle separate the species now under description from 4. tegulata, n. sp. 
Locality. Olapaudy, in an oolitic, ferruginous rock; rather rare. 
Formation. Arrialoor group. 
5. ALARIA TEGULATA, Stoliczka. Pl. II, Figs. 11—13. 
A. testa spira elongata, acuta, superficie polita; anfractibus 8—10, subconvexis, 
transversaliter costulatis ; costulis parum obliquis, nonnullis fortioribus interdumque ti 
anfractibus succedentibus continuis ; ultimo anfractu circiter dimidium totius altitudinis 
occupante, ad basim spiraliter striato ; rostro elongato (7), tenui; labio calloso ; labro 
expanso posterius uncinato (7), postice nonnunquam supra anfractum antepenultinum 
decurrente. 
Spiral angle 28°—82°, sutural angle 8°—12°. 
The shell is rather elongated consisting of 8 or 10 whorls, which are slightly 
convex, transversally costulated and covered with a thin enamel callosity. These 
costee are usually very thin, sharpened and numerous, only some of them, in about 
one-third of one volution separated from each other, being somewhat stronger. On 
the last whorl, which is of about the same height as, or a little higher than, the spire, 
the ribs become more distant and often disappear altogether. When the shell is not 
enveloped in the callose secretion it appears to have been all over covered with very 
fine spiral strize ; on the anterior portion of the last whorl this striation is usually 
retained. The transversal ribs owe their sharpness chiefly to the covering callosity, 
which unites them often through nearly the total height of the spire, continuing 
from one whorl to the other; this makes the sutures nearly obliterate, but they 
are always traceable by a slight impression. 
The rostrum is not entirely preserved in any of our specimens and we have indi- 
cated its probable length by an outline. The inner lip is rather callose and the 
secretion of the enamel-coating seems to proceed from this portion of the: mantle. 
The outer lip is expanded, reaching posteriorly on the penultimate whorl and occa- 
sionally little higher; it seems to have been prolonged into a hook-like wing, 
while anteriorly it is much contracted. This species differs from A. acicularis 
by a greater height of the whorls of which the ribs are not so much oblique, by a 
smaller spiral and larger sutural angle, and apparently also by a greater length of the 
anterior canal or rostrum. The numerous ribs, resembling sharp lamelle, are charac- 
teristic of this species, and do not admit an identification with any known species, 
although when these lamellar ribs are not preserved, the resemblance becomes 
apparent to several others. 
Localities. Andoor, Kolakonuttom, N. of Serdamungalum: Comarapolliam, 
Arrialoor, 8. E. and N. E. of Karapaudy, Olapaudy and near Veraghoor. Except at 
Olapaudy not common. 
Formation. Trichinopoly-(to which the three first named localities refer) and 
Arrialoor-groups. 
K 
