40 PEOCEEDINGS OP THE GEOLOGICAL SOCIETY. 



cimens occur only in the condition of more or less mutilated and worn 

 fragments. Here again we find many of our common and widely 

 spread European and American species, along with a few that had 

 not yet been noticed from other parts of the world, and which indi- 

 cate that the Carboniferous rocks of Thibet, Kashmere, and the 

 Punjab belong to one great formation. 



1. Tekebrattjla sacculus, Martin, sp. ? PI. II. fig 1. 



Anomites sacculus, Martin, Petref. Derb., tab. xlvi. fig. 1. 



Two ventral valves of a shell having much the appearance of some of 

 our British examples of T. sacculus occur in a grey- coloured limestone 

 from Barus. 



2. Athteis subtilita, Hall, var. PL II. fig. 2. 



Terehratula suhtilita, Hall, in Howard Stansbury's Exploration of 

 the Yalley of the Great Salt Lake of Utah, p. 409, pi. 2. figs. 

 1 & 2. 



This appears to be a common shell in a grey limestone at Khoonmoo, 

 but has also been found at Barus, and is very abundant in the Punjab. 



3. Spirifeea Eajah, Salter. PL II. fig. 3. 



Spirifera Rajah, Salter, Pateontology of Kiti in the Northern 

 Himalaya, pp. 59 & 111. Calcutta, 1865. 



Shell marginally longitudinally oval ; hinge-hne slightly shorter 

 than the greater width of the shell. Ventral valve convex, with a 

 narrow sinus or groove extending from the extremity of the beak to the 

 front, and along the centre of which there exists a narrow thread-like 

 rib. The surface of this valve is ornamented with from sixteen to 

 twenty rounded ribs, of which the two central ones are the largest 

 as well as the most prominent, each rib being again furrowed by 

 three, four, or five smaller ones, while the whole surface is also finely 

 longitudinally striated. Beak prominent and incurved ; area of mode- 

 rate width and divided in the middle by a triangular fissure. Dor- 

 sal valve convex, but less deep than the ventral. The mesial fold 

 is well defined and composed of a single rib at its origin, and 

 continues so to some distance, when a smaller lateral rib is produced 

 on either side, and extends to the front; the remaining portion 

 of the valve is covered with a similar succession of smaller rounded 

 ribs, simple at their origin, but soon producing a small one on each 

 of its lateral portions, the whole surface being also marked with fine 

 longitudinal strise, as well as by numerous fine concentric lines of 

 growth. The largest specimen I have seen, if complete, would mea- 

 sure in length 23, in width 22 lines. 



Of this beautifully sculptured Spirifer a great many imperfect speci- 

 mens were found by Captain Godwin- Austen at Barus, in beds of the 

 Carboniferous age. At p. 59 of Colonel B. Strachey's ' Palaeontology 

 of Niti/ this species is described and figured by Mr. Salter, who ob- 

 serves that " the peculiar square shape, not very convex valves, acute 

 ribs, are all characters in which Spirifera Rajah approaches very near 



