XV.] CAMBRIAN AND SILURIAN IN EUROPE. 367 



published in 1845, there is given (page 15 et seq.) an ac- 

 count of his visit to this region in company with Professor 

 Loven, of Christiania ; which, with figures of the sections, is 

 reproduced in the different editions of Siluria. The hill of Kin- 

 nekulle, on Lake "Wener, is one of the three areas of transition 

 rocks delineated on the map of Hisinger above referred to. 

 Resting upon a flat region of nearly vertical gneissic strata, we 

 have, according to Murchison : 1. A fucoidal sandstone; 2. 

 Alum-slates ; 3. Eed orthoceratite limestone ; 4. Black grapto- 

 litic slates; the whole series being little over 1,000 feet in 

 thickness, and capped by erupted greenstone. Above these 

 higher slates there are found, in some parts of Gothland, other 

 limestones with orthoceratites, trilobites, and corals, the newer 

 limestone strata (a) of Hisinger ; the whole overlaid by thin 

 sandstone beds. These higher limestones and sandstones con- 

 tain the fauna of the Wenlock and Ludlow of England ; while 

 the lower limestones and graptolitic slates afford Calymene Blu- 

 menbachii, Orthis calligramma, and many other species com- 

 mon to the Bala group of North "Wales. The alum-slates 

 below these, however, contained, according to Hisinger, none of 

 the species then known in British rocks, but in their stead five 

 species of Olenus and two of Battus (Agnostus). 



In 1854, Angelin published his Palceontologica Scandinavica, 

 Part I., Crustacea formationis transitionis [4to, forty-one 

 plates], in which he divided the series of transition rocks 

 above described by Hisinger into eight parts, designated by 

 Eoman numerals, counting from the base. Of these I. was 

 named Regio Fucoidarum, no organic remains other than 

 fucoids being known therein ; while the remaining seven were 

 named from their characteristic genera of trilobites, which 

 were as follows, in ascending order, certain letters being also 

 used to designate the parts : II. (A) Olenus ; III. (B) Cono- 

 coryphe; IV. (BC) Ceratopyge ;' Y. (C) Asaphus ; VI. (D) 

 Trinucleus ; VII. (DE) Harpes ; VIII. (E) Cryptonymus. -In 

 the Regio Olenorum (II.) was found also the allied genus Para- 

 doxides. With regard to the characteristic genus of Regio III., 

 the name of Conocoryphe was proposed for it by Corda in 1847, 



