64 ME. J. W. KIEKBY ON PERMIAN FISH AND PLANTS. 



years ago, from the deep-water fishing-boats on the Northumber- 

 land coast, but did not at the time observe its distinctness from 

 S. scrupea, with which it agrees in having the cells operculated. 

 It differs, however, in having an avicularium on the front of each 

 cell, and in the peculiar shape of the vibracular capsule, which 

 is transversely wedge-shaped, while in the other known species 

 it is bilobed and erect. Another example of this species has lately 

 been dredged on the Durham coast, by Mr. Gr. S. Brady and Mr. 

 Hodge. It appears to be a Mediterranean species, and has also 

 been found in Madeira by Mr. J. Y. Johnson. This is the first 

 notice of its occurrence on the British coast. 



EXPLANATION OE PLATE VIII. 



Fig. 1. Eschara Landsborovii, natural size, from Mr. Enibleton's specimen 



in the Newcastle Museum. 

 Fig. 2. A portion of the same, highly magnified. 

 Fig. 3. A cell of the same, with ovicell and avicularium more highly 



magnified. 

 Fig. 4. Scrupocellaria Delilii, natural size. 

 Fig. 5. A portion of the same, magnified, front view. 

 Fig. 6. Back view of the same. 

 Fig. 7. A cell of the same, with ovicell, magnified. 

 Fig. 8. A central avicularium, magnified. 



IV. — On some Remains of Fish and Plants from the " Upper Lime- 

 stone" of the Permian Series of Durham. By James W. 

 Kibkby.* (Plate IX.) 



The object of the present paper is to record the discovery of fish- 

 remains in the Upper Magnesian Limestone of the Permian for- 

 mation, the occurrence of these fossils in that subdivision being of 

 interest in several respects, though more especially so on account 

 of their having there been found at an horizon considerably 



* Reprinted (by permission of the Council) from the Quarterly Journal of the Geological 

 Society of London 



