92 CRETACEGCUS GASTROPODA 
2.—ATHLETA SCROBICULATA, Stoliczka. Pl. VIII, Fig. 8. 
Ath. testa ovata, crassa, spira brevi; anfractibus quinis, prope planis, in medio 
purum excavatis, sutura impressa canaliculata sejunctis ; ultimo anfractu ventricoso ; 
superficie costis spiralibus atque transversalibus fenestrata, scrobiculata; apertura 
ovate-elongata, postice acute efjusa, antice emargimata; labro ad terminationem pos- 
teriorem crasse dentato; labio calloso, partem inferiorem ultimi ayfractus Sere totam 
tegente, antice triplicato. 
Spiral angle 82°; sutural angle 5°. 
Height of last whorl : total height (considered as 1:00) ... 0:70. 
‘The shell is composed of only five volutions, the last of which is ventricose, 
and enveloping the previous one to a great extent. The surface exhibits broad 
transverse and spiral ribs giving it a coarsely reticulated structure. Below the first 
sutural rib and the next stronger, there is on the last whorl a large interspace left, 
which having in the middle only one or two much finer ribs, forms a kind of a broad 
and shallow sulcus, remaining distinctly marked on all the previous whorls, where 
only the two ribs bounding the excavation on either side are present. Of the con- 
vexity of the last whorl nothing is seen on the upper volutions. 
The sutures are deeply impressed, canaliculated. The outer lip is somewhat 
sharpened on the margin, and is on its posterior termination strongly thickened 
tooth-like. The inner lip covers the greater part of lower or front portion of the last 
whorl. Both margins are on the posterior canal united by callosity, and the canal 
itself remains visible on the entire last whorl, forming a similar narrow impression 
parallel to the suture and gradually uniting with the latter. There are only three 
oblique and nearly equal folds visible in our specimen, otherwise the species resem- 
bles much Vol. cassidula, Reeve (Monog. Volutide, 1851, Pl. XXII, Fig. 60) 
Japan seas. 
Locality —W. of Kullygoody in Trichinopoly; the single as yet known and 
figured specimen occurred in a soft whitish sandstone. 
Formation.—Trichinopoly group. (?) 
XVIII. VOLUTILITHES, Swainson, 1831. 
(Vide Adams’ Genera I, p. 167; Chenu’s Manual IJ, p. 190, and others.) 
It is well known that a large number of fossil tertiary and cretaceous species 
belongs to this genus, of which a single recent species has been found at a great 
depth near the Cape of Good Hope. The most striking difference of this genus 
from other rozurivs# is the prolongation of the anterior extremity of the shell into 
a canal, being notched at its termination as in other rozvrry#. In form, it must be 
granted, the Volutilithes are most nearly related to Fulguraria, and strictly speaking only 
the peculiar form of the inner lip in the latter remains as a characteristic distinction 
from the former. It was originally intended to establish the new genus only for the 
recent species and those fossil forms which agree with it in the granular or spinulose 
and reticulated markings of the shell surface. The paleontologists soon availed 
