PRESIDENT S ADDRESS. 333 



on the fishermen's lines. It is distinguished from all the species 

 previously described by the granulated character of the papilhe, 

 and will be published in the " British Nudibranchiate Mollusca/' 

 under the name of Eolis pustulata. He also discovered, in tide- 

 pools, among the rocks at CuUercoats, a new zoophyte, of the 

 family Corynidce, apparently belonging to the genus Podocoryna 

 of Sars. The only specimen found was parasitical upon Corallina 

 ojfficinalU, associated with Coryne pusilla and Clava multicornis. 



Mr. Wm. Backhouse, in October, met with living specimens of 

 ATcera hullata (Bulla Akera) among sea-grass (Zostera), on the 

 mud-flats at the mouth of the Tees, near Seaton Carew. They 

 were of large size, the shell of the largest being nearly an inch in 

 length. This is the first time that this fine moUusk has been 

 met with on the east coast of England. 



Mr. Albany Hancock has supplied me with a note, that, in the 

 spring of 1853, he took, on the rocks at CuUercoats, a specimen 

 of Eolis exigua, a minute and beautiful species of Nudihranchf 

 which was originally discovered in Sweden, and has since occurred 

 in Cornwall and Wales, but it had not, hebelieves, been taken any- 

 where else in Britain, until its capture on the Northumberland 

 coast. And the same gentleman has also recorded the occurrence 

 of two interesting Permian Fossils in the limestone, near Sunder- 

 land. These were found by a young geologist, a relative of his, Mr. 

 James Kirkby, of Bishop Wearmouth. One is the shell of a gas- 

 teropodous mollusk of the genus Chemnitzia ; it is very perfect, 

 nearly one-fourth of an inch long, with six or seven strongly-ribbed 

 whorls. In Mr. Howse's Catalogue of the Permian Fossils, pub- 

 lished in our " Transactions," a fragment of a ribbed Chemnitzia 

 is mentioned, which probably belongs to the same species, but 

 which was too imperfect to admit of description. The other is 

 the tail of a Macrourous Crustacean. Two specimens were found, 

 the larger of which is about three-eighths of an inch long, and 

 consists of four plates, in very good condition ; but, on account 

 of the deficiency of parts, I am afraid it will be impossible to 

 determine the genus. 



As no remains of the higher Crustaceans had been previously 

 obtained in the Permian rocks, the discovery of these fragments 



vol*. II. PT. IV. 2 u 



