

3a./ ~~. nuclear whorls 
= or 
5 protoconch 
spire a b 
Figure 5. - Whorled shell: 
aise La ee Dextrally (to the right) ,(a); 
sinistrally (to the left), (b). 
length or height 

columella | 
1 aperture 
width 
Figure 4. - Shell terminology: 
Transverse or growth lines,(a); 
spiral lines or striae, (b). 





Figure 6. - Shell terminology and ——<— ih 
surface sculpture: Striae (indent- —— — 
ed spiral lines), (a); lirae(raised 
spiral lines), (b); ribs (raised penultinnatalwnorle SS 
transverse lines),(c); wrinkles, z body whorl ~. 
(d); punctae or pits (e); papillae, (f);2 color band --4 y 
hairs or bristles, (g). . Pilar ee 
8- ; aperture 
ii so ae Sa 5 earietal tooth 
width or diameter ‘basal tooth 
mantle 
back. breathing pore aia ree 
keel A ( ata veye 
anterior end 
\ \suprapedal groove ~~Stentacles 
‘pedal groove 
Figure 7. - Slug terminology. 
