24 
CEETACEOUS BRACHIOPODA 
striation, intersected at distances by abrupt striae of growth, perfectly coincide with 
the characters of the species, as recorded by d’ Arch iac and others. In the three 
specimens figured by d’Archiac, the apical angle is 93, 90, and 103 degrees re- 
spectively ; in the Indian specimen it is 90 degrees. 
Schloonbach (loc. cit.) mentions that there appears to he some doubt as to 
whether the two specimens from the Hed Chalk (Upper Gault), noticed by David- 
son under the name of T. caj)iUata, really belong to the latter species. The form of 
the figured specimen is certainly somewhat too regularly ovate, the nmhonal ridges 
of the neural valve more projecting, and the radiating ribs stronger than in d’Ar- 
chiac’s types, hut all these differences may be attributable to local variation, and as 
Davidson had Tonruay specimens for comparison, it is not very prohahle that he 
was mistaken in their identity, particularly as he notices the “ capilliform* ele- 
vated stria;” in his description. However, considering provisionally the occurrence of 
T. copillcda in the Copper Gault as not definitely settled, the geological horizon of 
the s])ecics falls within the cenomanien, particularly the lower beds of it. It 
occurs in these strata (Tourtia) in Belgium, near Essen, near Dresden and in various 
other parts of Germany. This geological position exactly corresponds with that in 
which we meet with the same species in India. 
Locality. — Ootatoor, a single specimen in a yellowish brown limestone. 
Formation . — Ootatoor group (the zone of Am. rostratus and Botomagensis, 
Inoceramns labiatns, 8fc.). 
S. TEREBRATrLA OOTATOOREXSIS, StoUczka, PI. VII, EigS. 2 — 3. 
Ter. testa rotundata, fere circulari, modice inflata, snh-lcevigata, minntissime 
pnnetata et striis incrementi nonnullis snh-rugatis notata ; valva neurali altera con- 
vexiore, medio antice paidtilmn extensa, rostro hreoi, incurvo, foramine magno, 
rotundato truncata ; deltidio medio unito, hrevissimo sed lato, apicem valvm haimalis 
attingente ; later Urns timhonalilms rotnndatis, area mdla ; valva hccmali leviter con- 
vexa, antice margine mediano paulo insinuato. 
A very characteristic ahnost circular robust species, with a finely punctate 
surface, slight frontal sinus and a small blunt beak, truncated by a large round fora- 
men, very closely placed to the apex of the heemal valve. The deltidium is united 
in the middle, very short, but broad, extending laterally into long points. The um- 
honal sides are rounded or ohtusc, forming aji angle of about 100 degi’ees ; there is no 
special area marked. 
Locality. — Ootatoor, one of the two figured specimens is from a concretionary 
earthy limestone, the other from a more compact, pinkish limestone. 
Forma t ion . — Ootatoor group. 
The occnrrcnce of similar stria; in T. depressa must have been the principal reason for d’Orhigny's uniting the 
two species, as suggested hy Dr. Schloonbach. 
