SECTION V. 



117 



fig. 3, 4, 5, 6, 7. hhhhh; alfo PI. IV, 

 fig. 4 and 5. 



The fcoop (linus) is the hollowed or 

 gutter-like procefs placed fide-ways of the 

 beak, and lower down on the very lip ; 

 which is feen in the fpiders, &c. Such 

 Shells have been called, from thefe two- 

 fold procefles, the beak and this, Buccina 

 Bilinguia. See PI. I. fig. 6, 7. / /. 



The claws or prongs (digiti, daflyli, un- 

 guli vel appendices) are the procefl'es that 

 iffue from all the contour of the lip, as in 

 the fpiders. See PI. L fig. 6, 7. k L 



Umbilicated Shells (Cochleae Umbili- 

 catae) are thofe that have a navel or hol- 

 low placed on the firft or body whirl, 

 or in the center, which penetrates the 

 Shell deeply, or its length. This is moft- 

 ]y feen in Cochleae, Trochi, and fome Buc- 

 cina. See PI. 111. fig. 1 1, PI. IV. fig. 6. 



I 3 Helices 



