Om Skånes brachiopodskiffer 
93 
Primitia (?) biloba n. sp. 
Pl. II, f. 11—12. 
Only internal casts are met with. Dorsal margin straight; ventral margin 
gently rounded; ends subequal. On the anterior two thirds of the cast there are 
seen two transverse lobes, ventrally coalescing, thus forming a U; the posterior 
lobe is crescent-shaped with a circular elevation near the dorsal margin; the anterior 
one is the highest and ovoid of form. A circular slightly swollen elevation is seen 
on some (larger) specimens on the anterior lobe near the dorsal. margin. Outside 
the U-shaped elevation there sometimes runs a shallow furrow the posterior vertical 
end of which is always distinct. The remainders of the shell on the specimen 
figured on pl. II, f. 12 showed before the preparing a smooth surface outside the 
lobes of the cast. For the measures see p. 51. 
Because of the lacking of the shell this species cannot be certainly determined. 
The U-shaped elevation reminds of the species of the Brachiopod beds referred to 
the genus Bollia. 
Æchmina Grönwalli n. sp. 
PI. Il, f. 14—15. 
Hinge line straight, ventral margin convex, ends rounded. Maximum of 
height on or before the middle of the shell. The strong horn like process on the 
posterior half of the valve is longer than the height of the carapace, directed 
upward-outward and curved forward. Surface smooth. Marginal border lacking, 
For the measures see p. 52. 
Most allied to Æ. bovina Jones and Æ. cuspidata Jones from the Wenlock 
Limestone and younger beds of England. 
Ctenobolbina sexpapillosa n. sp. 
PL II, f. 16—17. 
Hinge line straight, shorter than the shell. Posterior end more rounded 
and higher than the anterior one, both of them gently passing into the curved 
ventral margin. Shell slightly convex. The anterior two fifths of the valve are 
cut off by a sulcus running from the dorsal margin. The sulcus is in its original 
part well marked and disappears on some specimens already half way to the ventral 
margin while it on others continues making an oblique curve which reaches to 
just before the middle tubercle near the ventral anterior corner. Before the sulcus 
there is a well-defined transverse-ovate or rounded nodule. Moreover, there are along 
the margins of the shell six more or less centrifugally directed, conical tubercles, 
