82 CRETACEOUS GASTROPODA 
1. ScarHA ATTENUATA, Séoliczka. Pl. VI, Figs. 4 and 5. 
Scaph. testa ovate elongata; anfractibus septenis, ad suturam impressis, sub- 
levigatis, supra medium tuberculatis : tuberculis crassis, antice im costas prolongatis, 
attenuatis, circiter octonis in uno circuitu ; ultimo anfractu spire in altitudine fere 
equali; apertura compressa, antice effusa, in labii margine plicis ternis obliquis, 
conspicuis ornata ; canali brevi. 
Spiral angle about 35° ; sutural angle 18°. 
Height of last whorl: total height of shell (considered as 1:00) 0:48. 
An elongated shell, composed of about seven volutions, the last of which is 
nearly of the same height as the spire. They are slightly convex, contracted at the 
posterior suture, and each of them ornamented with 8-9 strong, above the middle 
rather sharply tuberculated, ribbings, which on the last whorl do not extend ante- 
riorly beyond the middle. The surface is only obsoletely spirally sulcated. The 
margin along the suture is occasionally thickened, and the keel below the same on 
the last whorl smooth, losing all the previous tuberculations (as seen in Fig. 5). 
The aperture is equally elongated as the shell, laterally compressed, the canal being 
comparatively short. On the inner lip three oblique folds haye been observed, the 
first anterior being the strongest. 
The specimen represented in Fig. 4 is, except on the apex and the extreme 
margin of the outer lip, quite complete. The more elongated form combined with 
a different shape of the whorls, and especially the rib-like tubercles, do not admit of 
our uniting this form at present with the Scapha gravida, which also differs by a 
larger number of folds on the columella, being four, while in the present species 
they do not exceed three, of which only the two anterior are stronger. The elongated 
form does not agree with living species of this genus, as already stated. 
Locality.—Kolakonuttom, from a yellowish clayey sandstone, and east of 
Anapaudy ; few specimens were found. 
Formation.—Trichinopoly group. 
2. ScAPHA GRAVIDA, Stoliczka. Pl. VI, Fig. 6. 
Scaph. testa ovata, crassa, spira brevi, subacuta ; anfractibus leviusculis, prope 
medium angulatis atque tuberculatis : tuberculis circiter 8 in uno circuitu, antice ver- 
sus in costas plus minusve prolongatis, crassis ; labio antice quadriplicato. 
Spiral angle 65°; sutural angle 14°. 
The shell of this species is somewhat thicker than that of most of the living 
species, but the broadly ovate form is the same. The whorls are angulated near the 
middle, and each provided with eight or nine strong and thick tubercles, which are 
prolonged anteriorly into as many short ribs. On the last whorl, which is higher 
than the spire, these ribs disappear gradually towards the anterior termination. The 
sutures are undulated according to the elevations of the ribs; the shell is otherwise 
perfectly smooth, save the fine strize of growth. The inner lip exhibits four oblique 
folds, the first of which on the edge of the canal is the smallest and the next the 
