8 P. A. ØYEN [No. 12 



This species occur in the usual type the epidermis as wel] 

 as the surface of the shell having the usual structure so characte- 

 ristic of this species. In some smaller individuals may be seen 

 a somewhat more regular surface structure of a more linear 

 and parallel development. We, to a rather great extent, find 

 the specimens to be preserved with both shells combined. 



Leda pernula Mull. As well of a more rugged variety as 

 of a stender one. The length measured was about thirty milli- 

 metres. One single specimen proved to be of a rather peculiar 

 shape as follows: — 



Length 14.5 mm. Height 10.5 mm. Relative index 0.724. 

 Nearly the same ovate and triangular shape we also meet with 

 at Riviére du Loup from which place I found, among specimens 

 of forma typica, also a single one measuring, 



Length 21 mm. Height 13 mm. Relative index 0.619. 

 We may perhaps be justified in drawing some comparison be- 

 tween this peculiar variety and L. pernula, var. Jacksonii, 

 „a shorter and more tumid shell than the typical L. pernula, 

 with the cardinal margin eroded in such a manner as to show 

 the origin of the hinge denticles" (Whiteaves: Marine Inverte- 

 brata of Eastern Canada, 1901, p. 125). 



Macoma calcaria Chem\. was rather numerous measuring 

 a length of 45 mm. 



Saxicava arctica L. Numerous. 



Buccinum terrae novae Mørch fonna typica (and var. a 

 Leeche). 



Sipho islandicus Chemn. 



Sipho togatus Mørch. 



Sipho Yerkrutzeni Kobelt of the same shape and type as 

 that found by Miss Esmark in the tile-work near Ranviken 

 (Sandefjord). On shells of this species was also found Spi- 

 orbis sp. 



At the tile-work of Framnes, in the Island of Jelø, only 

 separated from the former locality by the Channel of Moss and the 

 small Bay of Verlebugt I, in the month of June 1899, found a 

 similar fossil-bearing brick-clay as in the above described locality. 



