588 WORMS. TESTACEA. 84. Patella. 



Oralis. Shell oval^ fomewhat convex, thin, with crowded ftria!, 

 grey with black! (h rays and fpots. 



Inhabits Schroet. EinL in conch, z. tab. 5. fig. 10. 



Shell near an inch long : crown obtufe, yellowifh furrounded 

 with a band of white dots: bottom cinereous furrounded with 

 a white band. 



Rubella* Shell a little convex, ftriate, reddilh: crown whitim fpot- 

 ted with red: bottom whitilh. 



Inhabits Schrcet. n. Litterat. 3. p. 122. n. 238, 239. 



Shell above half an inch long, fometimes thicker or thinner. 



Stefiabilis. Shell flattifh, a little wrinkled, filiate, reddifh-white with 

 a chefnut band towards the crown and another bay one 

 at the margin. 



Inhabits Schroet. n. Litterat. 3. p. 124. n. 241* 



Shell 3 inches long, with about 18 larger Aria? and numerous 

 leffer ones between them : cronjon flat, cinereous : bottom with 

 a fpatulate white fpot furrounded wi.tji a cinereous and a red- 

 dilh border. 



Confpurca- Shell folid, flattifh, ftriate, black with cinereous dots, within 

 **•• blueifh: crown dirty-yellow. 



Inhabits Schroet. EinL in conch. 2. p. 497. n, 1 33. 



Shell near 2 inches long, narrower on one fide, with flattened 

 flrise : internal margin filvery : bottom with an oval liver-colour 

 fpot furrounded with a white horfe-lhoe fhaped band. 



Melanostic- Shell folid, flattifh, ftriate, whitim with cinereous rays and 

 ta * black dots, within blueifh : crown a little pointed and 



whitilh. 

 Schroet. EinL in conch* 2. tab. 6. jig. 9. 



Inhabits refembles P. confpurcata, but' is lefs and fubpel- 



lucid, and the black dots are difpofed in 5 or 6 belts: bottom 

 fqualid furrounded with a horfe-fhoe-Oiaped grey band. 



Aim. Shell black, ftriate, with a paler crown: bottom with a 



brownifh mark furrounded with a white horfe-fhoe- 

 fhaped band. 



Inhabits — Schroet. n* Litterat'. 3. p. 129, n. 251. 



Shell i\ inch long: crck>:n white or variegated brownifh and 

 lira w- colour: internal margin cinereous or blue: bottom with 

 a brown or variegated white ar*4 brownifh fpatulate fpot. 



Spcrularis. Shell oval, convex, folid, glabrous, liver-colour, within and 

 the crown brownifh, the latter furrounded with a white 

 border and interrupted brownifh band. 



Inhabits 



