18 
CEETACEOrS BllACniOPODA 
3. Tekebiiatula. conf. Cauteri, Davidson, PI. IV, Pig. 1, 
1S52. T. Carteri, Davidson, Brit. Crct. Bnieh., j). 72, pi. vii, fig. 3. 
1868. 
1809. 
Schlojubach, Sit/.b. Akad., Wien, Wat. Nat. Klas.se, Ivii, p. 206. 
„ in Jabrb. fiiv Minci-alogie, &c., p. 828. 
Tlic only speeiineii from Soutliern India so agrees, as far as preserved, in all 
essential particulars with T. Carteri, that I think its identity with that European 
species highly probable. T. Carteri is characterized by an elongated form, the 
greatest ividth lies somewhat in front of the middle and is about equal to two-thirds 
of the total length ; the hannal vali'o is slightly less elevated than the neural one, 
the former being someivliat broadly insinuated in front, while the latter is corres- 
pondingly produced and bent upwards ; at the sides near the front the neural valve is 
somewhat indented by an overlap of the hannal one ; the surface is smooth, marked 
Avith some slightly elevated concentric striic of groAvth, when well preserved, and, 
as usually, finely punctated. In Davidson’s type the beak is A'ery short, incurved, 
truncated by a moderately sized foramen, the deltidiuin is hardly traceable, hcak- 
ridges and area not developed. Schloenhach says that he examined specimens 
from the so-called “ Galeritcn Schichten” (Ujiper Phener), which in form perfectly 
agree with Davidson’s type, the average largest size, however, being only 30 mm., 
instead of 40, hut there Avere also some other specimens in Avhich the beak was 
slightly more produced and the deltidiuin perfectly Avell visible ; no beak ridges or 
area Avere, liOAA'eA'or, defined. The specimen from Southern India has the beak unfor- 
tunately liroken off, but there is distinct indication that it must have been as short 
as in Davidson’s type, Avhile the size of the shell agrees Avdth tliat of Schlocn- 
baeh’s specimens. 
I should also mention that a similar species of a Terebratnla has been described 
by Tate from the Irish eretaceous deposits as T. ahrupta, but the haemal A'alve is 
near the anterior end deeply sulcated in the middle (Quart. Jour. Geol. Soc., London, 
1803, xxi, 2^- Ilj pi. V, fig. 1). ]\Ieyer’s T. extensa ( Geol. Mag., 1801, i, 
ji. 252, 2)1. xii, figs. 1 — 4) 2 )ossesses still more similarity with T. Carteri, but the 
greatest Avidth in this S2)eeies is above the middle, and the anterior end is some- 
Avhat more produced. 
T. Carteri is recorded from the Grey Chalk near Dover (Dav.), and from the 
L 2 ^PGr Plaoner of various 2 iarts of Germany (Schloenhach, 1. cit.). 
Locality . — The single South Indian specimen is from tlic broAvuish earthy 
ealcareous beds east of Olapaudy, recorded on the map as belonging to the Arria- 
loor group, hut resting immediately on the Ootatoor beds, so that some of the fossils 
from this locality might Avith equal 25robahility haA^e been derived from the lower 
beds. 
Formation . — Arrialoor group (?) 
