UNIVALVES. STROMBUS. 73 



expanded wing, (hence called Alatce or Winged shells), 

 or to continue it, in distinct situations, into long and pointed 

 spikes or claws; however, these appearances are only 

 manifest in adults, the very young shells being totally 

 without wings or claws. 



The most prominent species of the division which has 

 the Jips terminated by claws or legs, are as follow: 

 viz. Strombus Chiragra or Devil's-claw, Strombus Scor- 

 pius or Scorpion, Strombus Lambis or Spider-shell, and 

 Strombus Millepeda or Thousand-feet. The number of 

 claws, in the different species, varies from six to ten, and 

 the Strombus Pes-pelicani (the Pelican's or Cormorant's 

 Foot) has only fourpalmated claws, of a pale complexion. 

 The claws in some species are nearly straight, and often 

 smooth, whereas in others they are very much curved 

 and covered with wavy nodules or knobs. The progres- 

 sive growth of these shells, is particularly worthy of no- 

 tice: it has already been stated that the very young 

 shells have no appearance of claws; however, when some- 

 what older, they begin to shew themselves in the form 

 of short and open spouts ; when farther advanced, they 

 assume the shape they are to retain, but still they remain 

 thin, hollow, and imperfectly closed; but when arrived 

 at their destined or full growth, they become perfectly 

 filled up and solid, and have a thick, strong, and heavy 

 horn-like appearance. 



Among those Strombi that are not ornamented by a 

 decided wing, may be included the Strombus Fasciatus, 

 Pugilis, and Lentiginosus. The Strombus Oniscus is to- 

 tally destitute of any wing-like appearance; but those 

 that have that feature most prominent, are the Strombus 

 Gallus or Plough-alatus, Strombus Auris-Dianae (the 

 Ass's or Diana's Ear), Strombus Latissimus, (a very rare 



