I916. No. 10. THE LOWER CAMBRIAN HOLMIA FALNA. 3 



this place. The inversion was recognised in 1855, and the place has 

 subsequently been minutely examined, achieving additional interest from 

 the circumstance that A. Tørnebohm and G. Linxarsson in 1870, in the 

 green shale between the quartz and the alum shale, found the older sec- 

 tions of the primordial fauna represented, viz., by a Faradoxides, which 

 LiNNARSsoN named and described. 



Some fragments of the same Paradoxides, and also several other 

 forms from the green shale and the accompanying plates of calcareous 

 sandstone, were found by the three gentlemen Stlb, L. Larsen, and 

 Corneliussen when the sections were re-inspected. 



Professor Angelin, who during a visit to Kristiania in 1871 inspected 

 the fragments of the Paradoxides form last found, will describe the same 

 in the continuation of Palaeontologia Scanditiavica, tab. 49, figs. 10 — 11 ^ 



In the other forms, I believe I recognised an Arionelliis, both from 

 the green shale and from the calcareous sandstone, an Obolus from the 

 green shale, and a Piscina from the calcareous sandstone." 



These forms are represented on page 83, figs, i — 13. According to 

 Kjerulf figs, i — 5 represent Paradoxides Kjerulfi Lnrs., figs. 6 — 9 Ario- 

 nellus sp., figs. 10 — 11 Obolus (?) sp., and figs. 12 — ^^13 Piscina (?) sp. 

 As will be seen, a knowledge of the fauna was considerably extended by 

 the investigations made by Kjerulf and his assistants. Unfortunately the 

 figures are not accompanied by descriptions, but in spite of their some- 

 what rough execution, they are quite good and characteristic. The original 

 drawings and some of the originals still exist, and give access to the fol- 

 lowing identification of the forms named and described by Kjerulf. 



Figs. 2, 3, and 5 are Linnarsson's Paradoxides (now Holmia) Kjertdfi 

 figs. I - and 4 on the contrary belong to a quite different form of JJeso- 

 nacidae, which are described in the present work under the name Kjenilfia 

 lata nov. gen. et sp. Figs. 7 — 9 represent Cranidia of the form that was 

 subsequent!}' described by Brøgger as Arionelliis (Strenuella) primaeviis, 

 fig .6 on the contrary is another form, subsequently called by Linnarsson 

 Ellipsocephalus Nordenskjöldi. The form depicted in figs. 10 — 11 as Obolus O 

 is Obolella rotundata nov. sp., and the little brachiopod depicted as Piscinae) sp. 

 must be regarded as Obolella (Glyptias) favosa Lnrs. 



As will be seen, Kjerulf was the first, and in reality the onh' in- 

 vestigator, to depict a Cranidium of the large, new ^esanocide, without 

 however considering it as differing in kind from Hohnia Kjendß. 



^ This continuation was never published. 



2 The original of this figure is depicted in the present work on plate VIII, fig. i. 



