32 LIXXARSSOX, BRACHIOPOBA OF THE PARADOXIDES BEDS. 



In the Olenus beds the Trilobites are still niore prevalent, 

 tliough not so many in number and only comprising, perhaps 

 "with one single exception, a few genera of the Olenide and 

 Agnostide families. The only other fossils hitherto described 

 from the Olenus beds are Berjricliia Angelini Barr., ^) Orthis 

 lenticularis Wahlenb., Dichograptus tenellus Linrs. and Dicty- 

 nema flabelliforme Eichw. -) Though the lastnamed species 

 occurs together with an Olenide at Fågelsång in Scania, the 

 genus Dictyonema is chiefly characteristic of a somewhat higher 

 horizon, which I have, therefore, termed Dictyonema schists. 

 In these schists it is associated with OholeUa Salteri Höll and 

 a Dicliograptus. The Ceratopyge limestone that follows above 

 the Dictyonema schists has a distinctly Lower Silurian fauna. 



') This name Mr. Barrande, without a description, has giveu to a species 

 figured by Angelin in an unpublished plate, and stated to occur in the 

 alum schists of Scania. I have recently described and figured the spe- 

 cies from specimens collected in Nerike. 



^) Among undesci'ibed species there are some lAn^uUdce. 



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