586 WORMS. TESTACEA. 84. Patella. 



compofed of crowded yellow rigid crifp hairs united to the 

 reft of the body by a bine tendon; ovaries branched orange; 

 eggs globular. 



Guttata, Shell very finely ftriate and varied with dots of different 

 colours: bottom dufky. 

 Scbrcet. Einl. in conch. 2 tab. 6, Jig. 2, 3, 

 Inhabits— -if an inch long : refembles P. compreiTa: 

 Shell generally cinereous, with fometimes a peach-colour bloom, 

 or liver-colour variegated with white, wkh green and white 

 dots moftly difpofed in rays or rows, and generally with 2 or 

 3 darker bands or belts ; fometimes marked with decuffate flria?. 



Mytilifor- Shell glabrous, lead-colour, with a white horfe-fhoe fhaped 

 ms - band within. 



Schrat. Einl. in conch. 2. tab. 6: fig. £. 

 Inhabits Ferroe I/land, adhering to Zoophytes. 

 Shell about J of an inch long, refembling a Mytilu?, darker fronv. 

 the back to the crown ; the bottom paler, 



ocutiformis Shell oval, thin, black with white perpendicular flattened 

 ftria?. 

 Schrat. n.Litterat. 3. p. 103. n. 199— 201. 



Inhabits Shell not an inch long, whitifh within ; rarely 



chefnut : crown generally grey : bottom with a brownifh fpot. 



Cochlear, Shell white, flattifh, one part narrow, caniculate within 

 with a blueifh callus fhaped like a horfe-fhoe, the 

 other part rounded. 

 Knorr Vergn. 2. tab. 26. fig. 3. * 



2. Schrat* n. Litterat. 3. p. 1 05 — 107, n. 204--207. 



3. Born. Muf. Caf. Vind. ted, tab. 18. fig. 3. 



Inhabits — Shell 1 — 2 inches long, fometimes folid, often 

 tranfverfely barred and ftriate, the interlaces of the ftria; 

 chefnut ; the margin often ftriate on the outfide. 



Craticulata Shell oval, thin, deprefled, cancellate, radiate. 

 Schrat. n % Litterat. 3. p. ill. n. 216—220, 



Inhabits- Shell 1 — if of an inch long, generally hoary within 



white, with chefnut or reddifh-grey or red or yellowiih- 

 brown or alternately red and white rays, and fometimes t 

 darker tranfverfe bands: crown grey, cinereous, ochraceous or 

 white, fometimes dotted with red : bottom moftly white. 



Crifgntata, Shell -ova^ a little convex, varied with red and flightly 

 toothed, with elevated unequal rough ftriae* 

 Schroet % n % Litterat. 3./. 113. n. 221-^225. 



Inhabits 



