158 DR G. W. LEE ON 



confounded with .any of the forms usually referred to Dielasma hastatum (J. de C. Sow.), 

 and it does not appear to have closely allied representatives in the upper divisions of 

 the Carboniferous system in Eastern Europe. 



Dielasma gillingense (Davidson). 



Davidson, British Carhoniferous Braeh.iopoda, Pal, Soc, 1857-1862, p. 17, pi. iii. fig. 1. 



Two small incomplete specimens, characterised by their very depressed shape, 

 probably belong to this species. 



SpiRIFERIDiE. 



Genus Spiriferina d'Orbigny. 



Spiriferina insculpta (Phillips). 

 Davidson, loc. cit., p. 42, pi. vii. figs. 48-55. 

 The collection contains a few typical examples of this species. 



Spiriferina insculpta (Phillips), var. (PI. I. figs. 11-116.) 



Six specimens, in various stages of growth, differ in no essential degree from the 

 British representatives of Spiriferina insculpta ; the only difference is that the strongly 

 marked growth-lines typical of the species are here very indistinct, although the test is 

 well preserved. Failing to obtain access to the internal characters, owing to the presence 

 of infiltrated calcite, I am unable to say how far this surface feature should affect the 

 systematic position of these specimens. 



Waagen* and S. NikitinI' have indicated the differences between Spiriferina 

 insculpta and the Upper Carboniferous Spiriferina ornata Waagen. 



Spiriferina cristata (Schlotheim), var. octoplicata (J. de C. Sowerby). 

 Davidson, loc. cit., p. 38, pi. vii. figs. 37-47. 



All the external characters of this common fossil are well exhibited in the materials 

 at hand, consisting of a specimen nearly complete and a few fragmentary ones. The 

 area is large, very much like that depicted by Davidson, fig. 37 (loc. cit.). 



Spiriferina sp. indet. 



A very imperfect specimen, exhibiting the characteristic punctate shell-structure of 

 the genus Spiriferina, differs from the above in having the ribs more sharply defined, 

 that is, higher and narrower. Too little is seen to enable one to say whether this 

 difference is to be attributed to anything more than an individual character. 



■ Pal. Indica : Salt Range Fossils, 1883. t Mem. Com. Ge'ol. Russie, t. v., No. 5, 1890. 



