10 



THE FOSSIL COEALS AND 



Fibularia, sp. 

 Amblypygus, sp. 

 Conoclypeus pulvinatus. 



Orbitolites pedunculata. 

 Orbitoides dispansa. 

 Patellina Cooki. 

 Alveolina ovoidea. 



sphseroidea. 



Nummulites obtusa. 



FORAMINIPEBA. 



Eurhodia Oalderi. 

 Echinolampas discoideus. 

 Sindensis. 



Nummulites Eamondi. 



Biaritzensis. 



Beaumonti. 



Vicaryi. 



granulosa. 



Leymeriei. 



" Many of the species named, and the Foraminifera especially, are characteristically 

 Eocene; and there can be no question that the Nummulitic limestone of India is a 

 continuation of the same formation in Europe. Several species pass from the Eanikot 

 beds into the Khirthar group ; indeed the principal palseontological diflferences between 

 the two may be due to a change in conditions, the Khirthar being apparently a deeper 

 water deposit than the Eanikot group. 



" Nari Group. — The series of Tertiary rocks above the Khirthar Nummulitic lime- 

 stone is superbly developed and very well seen in the hills on the frontier of Upper Sind, 

 the culminating ridge of which is known as the Khirthar. The names of the Tertiary 

 groups overlying the Nummulitic formation have consequently been derived from places 

 in this range ; and the Nari group takes its title from a stream which traverses the 

 lower portions of the range, composed almost entirely of Nari beds, for a considerable 

 distance, and issues from the hills nearly west of Johi, and west by north of Sehwan. 

 The present subdivision comprises, at the base, the uppermost bands of limestone 

 containing NumTnuUtes — the species, however {N. Garansensis and N. sublcevigata), 

 being distinct from those so commonly found in the Khirthar subdivision, and the 

 limestone itself being usually distinguished from that of the Khirthar group by its 

 yellowish-brown colour, and by being in comparatively thin bands, interstratified 

 with shales and sandstones. Several other fossils, too, besides the Nummulites, differ 

 from those in the Khirthar beds. Not unfrequently, however, there is an apparent 

 passage from the white or greyish-white Khirthar limestone into the yellow or brown 

 Nari rock, and the two groups appear always to be perfectly conformable ; but no 

 intermixture of the characteristic species of Nummulites has been detected, and 

 the division between the Khirthar and Nari beds can always be recognized by the 

 fossil evidence. In some places the lower Nari beds consist almost entirely of 

 brown and yellow limestone ; but more frequently the limestone bands are subordinate, 

 dark shales and brown, rather thinly-bedded, sandstone forming the mass of the rocks. 

 The limestone bands are often confined to the base of the group, and always diminish 

 in abundance and thickness above, although they are occasionally found as much as 

 1500 feet above the top of Khirthar. The shales and fine sandstones, with occasional 

 bands of limestone, constitute the lower Nari beds, and pass gradually into the coarser, 

 massive, thick-bedded sandstones forming the greater portion of the group, and attaining 

 a thickness of 4000 or 5000 feet on the flanks of the Khirthar range. With the 



