UNIVALVES — MUREX. 133 



In the tenth division the spire is rather depressed, 

 and the beak so much shortened, that in some of the 

 species, and particularly in the M. ficus, a resemblance 

 to the Bulla ficus may be observed. 



The eleventh division is composed of the species 

 which have a ventricose and oblonjo- form, with a dilat- 

 ed aperture: the most remarkable is the M. tritonis 

 which is used by the natives of New Zealand, and by 

 the Africans and many nations of the East, as a horn or 

 trumpet ; it sometimes exceeds two feet in length. 



The last division of the Murices includes those spe- 

 cies that are tapering* and subulate, having a very short 

 beak : among them may be noticed, the M. vertagus and 

 M. aluco. 



Of the rarer species may be eniunerated the M. per- 

 versus, M. prismaticus, M. stramineus, M. radix, M. 

 aruanus, M. regius, M. pinata, &c. 



The numerous species of the Murex are found in the 

 European, Northern, and Southern Seas; India, and in 

 the Mediterranean, Adriatic, and Atlantic. 



This genus derives its name from many of its species 

 being rough, like the sharp crags of a rock (Murex). 



Division I. — Shell spinous with a produced beak. 



Family 1. — With three varices. 



Scientijic Name. Locality. Cmnmon JVame. 



Tribulus Asiatic Ocean Thorny Woodcock 



Scolopax Red Sea Thorny Snipe M. 



Motacilla East Indian Seas Nightingale do • • 



