KEUPER ROCKS. 
59- 
Bucli) characteristic enough of the mountain limestone in 
Arctic regions. It is a line species. 
srntiFER eajah, 
n. sp., from the Trias beds, Spiti Pass (Oxford Collection). 
S. robustus, subquadratus, longus quum latus, costatus, costis (10-12) 
acutis multifidis. Sinus angustus, elevatus. Umbo valde curvus. 
The peculiar square shape, not very convex valves, acute 
ribs, are all characters in which S. Rajah approaches very near 
the S. Keilliavii. But the fasciculate secondary ribs are 
stronger, while the costse themselves are less deep. It is like 
S. cluplicicosta, Ph. 
It would he strange indeed, seeing that the carboniferous 
rocks of India are but duplicates of those of Derbyshire ; and 
that the overlying Liassic and Oolitic strata are filled with 
ordinary British forms, if the intermediate Trias should not 
contain European species. The identification, therefore, is a 
very welcome one, and might have been anticipated. 
I think, where the species have been already well described 
and figured by Hauer and other authors, it is unnecessary to 
re-describe them minutely. The figures will, in these cases, 
speak for themselves. For the others, the scientific reader 
may consult the Vienna journals as here quoted. 
