18 OLAF HOLTEDAHL. [SEC. ARCT. EXP. FRAM 



t'nfortnnately the upper surface of the colony is not well preserved so 

 that the characters of the apertures, which are very important for a 

 spe.-ilic determination, arc not known. Tlie thickness of the upper layer 

 i- ahont '2 nun. in the tliiniier parts. A thickening at one place may 

 po--ihly indicate the former presence of a monticule. 



Occurrence: B, upper part, in the fragment limestone, Valley 

 south of Borgen. 



Cryptostonin ta. 

 Fenestellidu e. 



Fenestella LONSD. 



Fenestella sp. 



Two very small fragments of an impression of what probably has 

 been a Fenestella-iorm are found in pieces of black limestone, one also 

 with the Fistulipora sp. 



Occurrence: B, tipper part, in the fragment-limestone. Valley 

 south of Boren. 



Brachiopoda. 



Atremnta. 

 Lingulidae. 

 I SMUG. 





sp. 

 PI. VII, fig. 1. 



The inner side of one valve and an incomplete internal cast of 

 another are known. The form is oblong, nicely rounded, with the greatest 

 width to the front of the centre. Length 10 mm., width 7 mm. The 

 anterior margin is relatively- very broadly rounded, the posterior margins 

 iiK-eliim ; i! the beak at an obtuse angle. The cast shows a moderate 

 convexity, with a narrow. Hal. or slightly concaxe marginal rim. broadest 

 m front. A line concentric strialion is visible mi the surface, and in the 

 ''ntre of the cast a very faml longitudinal depression is \isible, corre- 

 -pondin- to a very low median ridge. On the inner side of the valve, 

 to the front of the centre and in the median line, a faint elevated point, 

 corresponding to a depression on the surface of the valve is visible. 



Tin- -p.-cimeii >how> some resemblance, inter alia, to several of the 

 forms from the Louer I lelderheri,' of New York and the (iaspe district. 

 e. i; /,. sfinUinin and I ,. frcfilttlrrntd HAI.I,, yet it seems to exhibit 

 distinct differences in outline, besides being smaller. On account of 

 the fragmentary material I will refrain from naming it. 



Occurrence: I;, middle part, between Reindeer Valley and Valley 

 -oulh of 



