250 



SIPUNCULACE^E. 



these is a circle of tentacula, very numerous, and jagged at 

 the edges. The internal structure resembles generally that 

 of the last species, saving that in the specimen examined 

 I could find no respiratory tubes. The muscles of the 

 skin are very tender, and are strongest near the anterior 

 extremity ; those of the trunk, however, are very strong, 

 and bifurcated at their bases. There is a genital tube 

 opening opposite the vent. The animal is of a pinkish 

 colour. 



The pencil of my friend, Mr. G. J. Bell, has furnished 

 the accompanying sketch of one of the dredger's worst 

 enemies, a squall. The scene is the Holy Loch in the 

 Clyde district ; a province which, thanks to Mr. Smith, 

 has contributed many rarities to the British Fauna. 



