PABT 1.] 
Blanford: Geology of Sind. 
13 
The massive Nummulitic limestone itself abounds in fossils, especially Foraminifera, 
but owing to the nature of the rocks and their mode of weathering, their organic contents 
usually only appear in section on the weathered surface. Corals, Echinodermata and 
Mollusca abound, but the latter, as a rule, weather out as casts. The following are some 
of the most characteristic fossils identified :— 
Foraminifera. 
Orbitolites sp. Nummulites obtusa, Ramondi, Biarit- 
Orbitoides dispansus. zensis, Beaumonti, Vicaryi, exponens, 
Patellina Cooki. granulosa, spira, and Levmeriei. 
Alveolina ovoidea and A. spheroidea. 
Echinodermata. 
Echinolampas discoideus. 
E. Sindensis. 
Eurhodia Calderi. 
Conoclypeus pulvinatus ? 
Amblypygus sp. 
Eibularia sp. 
Eupatagus avellana. 
Schizaster sp. 
Brissopsis Sowerbyi P 
B. scutiformis. 
B. sp. 
Lamellihranchiata. 
Ostrea vesicularis (0. globosa, Sow.) Vulsella legumen. 
Pholadomya halaensis. 
Gasteropoda. 
Nerita Schmedeliana (very abundant). Ovulum Murchisoni and other species. 
Crustacea. 
Arges Murchisoni (Galenopsis Murchi- Ranina sp. 
soni). 
Amongst the above the most common and characteristic forms are Orbitoides (dispansus, 
Sow.), Nummulites of various species, Alveolina, and Nerita Schmedeliana. Of the age of 
this group it is unnecessary to say anything, as it is, of course, the same as that of the Nummu- 
litic limestone of Southern Europe, vis., typically eocene. 
The thickness of the Khirthar group lias not keen determined, but, where fully 
developed in the Khirthar range, it cannot be less than 3,000 feet, and it may be twice as 
much. To the south, however, the thickness must diminish greatly, and near Jhirk and 
Tatta it, probably, docs not exceed a few hundred feet. 
The Nummulitie limestone forms the whole higher portion of the Khirthar range from 
the northern frontier of Sind to the termination of the range within the province about 
fifty miles south-by-west of Sehwan. It also composes the range which under various 
names, Lakki, Eri, Daphro, &c., runs south from Sehwan to beyond Bula Khan’s Thana, 
and the several ridges to the westward near the Habh, the southernmost of which terminates 
at Cape Monze, It, moreover, occupies a considerable tract of country near Kotri and Jhirk 
(Jerruck), and forms the isolated hills of Salchar (Sukkur), Rohri, Hyderabad, and Tatta. 
4. Naei or Upper Nummulitic Group. 
The upper sub-division of the nummulitics of Sind is, where best developed, very nearly, 
if not quite, equal in thickness to the lower, but its composition is very different. At the base 
it contains a variable thickness of brown and yellow limestone abounding in Nummulites 
garansensis, N. subl&vigata, and Orbitoides Fortisi (= O. papyracea, Boubee), interstra- 
tified with sandstone and shale. These beds arc in places five hundred feet thick, but usually 
