III. Palæontologicai Description of the 

 Brachiopod Fauna. 



Dielasma sp. 



A little, oblong smooth form, without sinus, 4 mm. high and 

 3 mm. broad ; from the Cape Jungersen section {N:o 135). As, how- 

 ever, only one specimen has been found, it is useless to endeavour 

 to identify it with any of the numerous species described. 



N:o 1. Rhynchoporti Ni^tiui Tschern. 



For synonyms, see Wiman, 1914, p. 26, Tschernyschew, 1902, 

 p. 73. 



Of this characteristic species there are 3 specimens in our ma- 

 terial, which were injured in developing from the rock; 1 is from 

 the Mallemukfjæld (N.o 154), and 2 from the Eskimo Naze {N:o W4), 

 all in boulders. The specimen from the Mallemukfjæld is larger, 

 with a width of about 13 mm., and with 5 ribs in the mesial fold, 

 than the best preserved specimen from the Eskimo Naze which 

 measures about 10 mm. in width and has 4 ribs in the sinus and 3 

 in the mesial fold ; this latter specimen is evidently not full-grown. 



The species occurs abundantly both in Spitzbergen and on Bee- 

 ren Eiland, and, in Russia, goes from the Omphalotrochus horizon 

 quite up into the Permian deposits. 



N:o 2. Camarophoria cfr. Earpiuskii Tschern. 



PI. XXVII, Figs. 1—2. 



A somewhat damaged specimen, found in boulder N:o löA from 

 the Mallemukfjæld, appears to us to be most in agreement with C. 

 Karpinskii Tschernyschew (1902, p. 496, PI. 60, Figs. 2—3) and also 

 presents some points of similarity with С globosa Tschern., which 

 is related to the preceding. 



The difference from the lirst-named species is, however, so 

 marked that we cannot at once identify our specimen with it. Had 



XLHI. 42 



