»9l6. No. lO. THE LOWER CAMBRIAN HOLMIA KALWA. 1 7 



Fani. Acrotretidae Schuchert. 



Acrothele Linnarsson. 



Acrothele bellapnnctata Walcott. 



1908. Acrothele bellapttnctata Walcott, Cambrian Brachiopoda. Descriptions of new genera 

 and species. (Smiihson Misc. Coll., Vol. 53, No. 3. page 82, plate VIII, figs 9— 9^ t 

 The first description and illustration of this beautiful little form. 



1912. Acrothele bellapunctata Walcott, Cambrian Brachiopoda (Monograph U. S. Geol. Sur\-., 

 Vol. LI. page 636, pi. LVII, figs. 3, 3 a — bi. 

 Fully described and depicted. 



The specimens that Walcott had for description belonged to a col- 

 lection made by Schmalensee in 1900. The locality (8 v) was described 

 as "Shales in upper portion of Oleucllus Kjerulfi zone near Lake Mjesen, 

 province of Hedemarken, Norway". Oboldla Mobergi Walcott and 

 Acrothele bellaptmctata Walcott are mentioned by Walcott from the 

 same place. It is not possible to decide with certainty this locality. Probably 

 it is Evjeviken. 



The species does not exist in my material. 



Gastropoda. 



Aspidobranchia Schweiger. 



Fam. Palaeacmidae Grabau a: Shimer. 



Scenella antiqua nov. sp. 

 I PI. II. figs. I. I a — c.» 



Description: The shell is broad and comparatively low. The 

 margin is in the form of a very broad oval, being almost circular; the 

 greatest breadth is at a point somewhat in front of the middle. The apex 

 of the shell is slightly bent downwards, and is situated at a distance from 

 the anterior margin of the shell that corresponds to about ^ ,; of the total 

 length of the shell. The form of the shell is best seen in the illustrations. 

 As shown by the cross profile in fig. i a, the dorsal portion of the shell 

 is somewhat sharp, whilst the outer part forms a flat brim at the sides. 

 As shown by the longitudinal profile in fig. i b, the dorsal region as seen 

 from the side makes a regular curve from the posterior region fon\-ards, 

 terminating at the inclined apex. The greatest height of the shell is thus 

 found somewhat behind the latter, and is a little greater than one third 



Vid.-Selsk. Skrifter. I. M.-N. Kl. 1916. No. 10. 2 



