OP NORTHUMBERLAND AND DURHAM. 27 



shells, and Captain Brown states that it is not uncommon on the 

 Northumberland coast. We have not, however, been so fortu- 

 nate as to meet with it, nor to hear of any one in this neighbour- 

 hood who has. We have, therefore, excluded it from the present 

 list, more especially as we have no record of its having been met 

 with by recent collectors on the north-eastern coast of Great 

 Britain. It stands as a Frith of Forth shell on the authority of 

 Captain Laskey. 



19. BULLA, LinnoBus. 



1. B. Cranchii, Leach. 



Bulla Cranchii, Flem. Brit. Anim. 292. — Johns, in Berw. 

 C. Proc. ii. 30. 



Bulla jyunctura, Johns, in Edinb. New Ph. Journ. v. 79. 

 From the haddock grounds, rare. All the specimens we have 

 seen have been obtained from the stomachs of haddocks. It was 

 first noticed on our coast by the Rev. W. Mark. Several years 

 ago we got' about twenty individuals in one season, since which 

 time we have not met with it again until a few months ago, 

 when four specimens were obtained from one fish. We have ex- 

 amined several of the animals in a decomposed state, but could 

 not find any trace of a gizzard. The shell has long been known 

 to collectors as the Bulla (Roxania) Cranchii of Leach, first 

 announced as British by Dr. Turton, and we presume it is the 

 same described by Dr. Fleming under that name, though we can 

 scarcely recognise our shell in his description. It is not, how- 

 ever, the B. cornea of Lamarck, which that author states he had 

 from Dr. Leach under the name of Bulla Cranchii. That spe- 

 cies is the B. hydatis of British authors. 



2. B. UMBILICATA, Mout. 



Bulla umbilicata, Mont. Test. Brit. 222, t. 7, f. 4. 

 Very rare. Two specimens have been obtained from the sto- 

 machs of fish. — J. A. 



3. B. CYLINDRACEA, Femi. 



Bulla cylindracea Mont. Test. Brit. 221, t. 7, f. 2. 

 From the coralline zone, frequent. 

 We have only once met with the animal alive. It is of a pale 



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