66" CATALOGUE OF THE MOLLUSCA 



MUREX, Linnceus. 



M. erinaceus, Linn. Two or three dead shells of this species 

 have occurred, but we think they are probably from ballast. 



Family. Buccinid^, Fleming. 

 59. TRICHOTROPIS, Broderip and Somrby. 

 1. T. BOREALis, Brod. and Soio. 



Trichotro2}is borealis, Brod. and Sow. in Zool. Jour. iv. 375. 

 Trichotropis umhilicatus, Thorpe Brit. Mar. Conch. 209, £ 54. 

 In deepish water, rare. We have got two or three shells of 

 this species from haddocks, and some fine specimens have been 

 obtained from the fishing boats at Whitburn by the Rev, G. C. 

 Abbes. Mr. Howse also dredged it at that place in 17 fathoms. — 

 Found alive in the fishing boats at Cullercoats. — A. H. 



60. PURPURA, Bruguiere. 

 1. P. LAPILLUS, Limi. 



Buccinum lapillus, Mont. Test. Brit. 239. 

 On rocks between half-tide and high-water mark, common. 



61. BUCCINUM, Z»Ba?Ms. 



1. B. UNDATUM, Linn, (common waved Whelk). 

 Buccinvm undatum, Mont. Test. Brit. 237. 

 Common on all parts of the coast. 



The varieties of this shell are numerous. Three principal 

 ones occur on this coast, inhabiting different zones of depth, to- 

 gether with a few other forms of less importance. 



Var. 1. Shell rather thin and slender, with the volutions 

 rounded, and a strong hairy epidermis : inside 

 white, occasionally yellowish or purple. From 

 deep watefr, generally on a muddy bottom. 

 2. Shell thick and strong : whorls not much raised 

 and strongly undulated : epidermis generally 

 wanting : inside white or rarely yellowish. From 

 the coralline zone on rocky ground. 



