266 
Only five specimens have been met with on the 
Scarborough Coast, and four of them are very young 
shells. 
LITTORINA. ZONARIA.—Bean.—NShell very strong, 
oval, not much pointed, body whorl very large occu- 
pying nearly three parts of the shell, volutions five, 
finely striated transversely and iongitudinally giving the 
shell a beautiful decussated appearance; colour yellow 
with two broad dark purpie bands ; outer lip thin, pillar 
lip spread, yellow and polished, inside purple. Length 
6 lines, Breadth 4 lines. Found in great abundance 
at Robin Hood Bay on ithe flat Iias scars at low 
water, in company with the common species. 
Littorina. NrGLEcTa. — Bean. —Shell strong, 
smooth, glossy and nearly globular,volutions four, mostly 
ending in an obtuse point ; body whorl large covered with 
numerous transverse dark interrupted bands; aperture 
orbicular, inside pale purple. Dzameter, not 2 lines. 
This small species is found in company with L. Petrea 
and Fabalis on large blocks of oolite that have long 
braved the fury of the elements on the north shore of 
Scarborough. 
Lirrorina. Rupissima.—Bean.—Shell strong, 
somewhat conic and pointed, with numerous raised 
