OF SOUTHERN INDIA. 305 
that it may also be found at other localities in Europe. I suspect that the figure 5 
given by Guéranger in his Album Paléont. d. 1. Sarthe, 1867, pl. 10, is a representa- 
tion of our Lusp. Marie. Guéranger left the species undetermined. 
Localities —Garudamungalum, W. of Kullygoody, Alundanapooram, Ana- 
paudy, Andoor, ete. ; common, and apparently a very characteristic fossil of the 
Formation.—Trichinopoly group. 
LXVII. GYRODES, Conrad, 1860. 
1. GyropEs pansus, Stoliczka, Pl. XXII, Figs. 9-13. 
Gyr. testa sub-globosa, spira paulo elevata, aut depressa; anfractibus omninis 
postice truncatis, applanatis sew canaliculatis, striis incrementi minutis seu plus 
minusve rugosis, arcuatis instructis, ultimo valde inflato ; basi late profundeque exca- 
vata; margine umbilicali in junioribus speciminibus crenato, in adultis plus minusve 
acute-angulato ; apertura amplissima, ovata, in junioribus antice angulatim sub-effusa. 
Spiral angle 120°-160°. 
Height of aperture : width of last whorl (considered as 1:00) ... no \UPCGE 
The largest specimen in our collection measures 40 mm. in the height and 50 mm. in the width 
of the last whorl. 
Shell globose, with a short or scarcely elevated spire; volutions six or seven, 
posteriorly broadly flattened or canaliculated, often with strongly raised and curved 
strie of growth, and with some traces of a fine, spiral punctuation. The last whorl 
is much the largest, broader than high, and at the basis largely umbilicated. In 
young specimens the edge of the umbilicus is very distinctly crenulated, in older 
ones it is simply angular; in all stages of growth there is a slightly raised 
rib traceable near the extreme edge of the umbilicus. The aperture is very wide, 
anteriorly rounded, posteriorly acute; the inner lip has no trace of a columellar 
callosity, save the thin umbilical rib which terminates with a very slight swelling on 
the edge of the lip. 
Conrad also mentions in the description of his Gyr. crenata (Journ. Ac. Nat. 
Se. Phil., IV, p. 289,) an internal rib in, and a crenulated margin of, the umbilicus, 
but it is impossible from the author’s short description to identify our fossil with the 
American one. Large specimens of our species are especially distinguished by the 
broad sutural flattening, and by the strong bending of the striz of growth on the 
posterior edge, which separates the flat from the convex portion of the whorls, 
(vide Figs. 11 and 12a). Several of the forms, described by different authors under 
the name of Nat. canaliculata, are very similar to our Indian species. 
Localities.—N eighbourhood of Odium and Moraviatoor (Oot. gp.) ; Serdamun- 
galum, Alundanapooram, Anapaudy (Trich. gp.) ; Vylapaudy, Malvoy, and Comara- 
polliam, (Arr. gp.) ; common, except at the three last named localities, and generally 
in company with Amp. bulbiformis, though not so numerously represented as the 
latter. 
Formations.—Ootatoor, — Trichinopoly - and Arrialoor— groups. 
4 F 
