WORMS. TESTACEA. 84. Patella. 569 
Fufcefeenss Shell flattifh, brownith, with ro elevated ftrie: crown of 
a different colour: bottom with a pale liver-colour 
fpatulate fpot edged with glaucous and gold: inner 
margin brown. 
Sobroet. n. Litterat. 3. 5. 50—53. n. 95—100. 
Inhabits— Shell 2$— 32 inches long; more or lefs convex ; 
often perpendicularly ftriate, aud ufually varied or undulate 
with black; or marked with paler linear bands: crexz black 
edged with grey, or liver-colour with angular brownifh and 
black veins, or varied with cinereous and glaucous with a 
whitifh margin, or greenifh with a whitifh margin: rays 
10—1i1, with leffer ones between them, acute, obtufe or 
flattened, fometimes golden: external margin fometimes 
whitifh; inner furface with often fugacious gold fpots: fpot 
at the bottom of the fhell rarely greenifh with a whitith 
margin. 
Maculofa. Shell flattened, the fore-part narrow and rounded, yellow- 
ifh fpotted with brown, with a white crown ; with 
flat rounded equal rays. 
Inhabits——Schroct, n. Litterat. 3 8.54. 2. 101. 2) 102. 
Shell-2—1 inch long, oval, within {potted with white and 
brown with 4 {patulate brown {pot at the bottom: rays 10 
or Ft. 
Rotundata. Shell fuboval, flattened, varied with brown, with rounded 
flat ribs and differently coloured crown and bottom. 
Inhabits——-Scbr et. n, Litterat. 3. p. 55. 2. 103, 104. 
Shell 13--2} inches long. pale brown radiate or {potted with 
yellow: crown grey-brown or liver-colour with a white bor- 
der: margin Íometimes cinereous with brown lines: orto; 
dull liver-colour with a calcareous and whitifh belt, or cine- 
reous varied with brownifh with a whitith belt. 
Pe&en. Shell ovate, obfcurely edged with white, radiate, with 
diftant {trie pectinate outwardly: crown grey: bot- 
tom with a fubfpatulate {pot furrounded with a white 
belt. 
Schroet. n. Litterat. 3. n. 1054. 2) 106. 
3» Martya univerf conch. 1. tab. 16? 
Inhabits North America: 1%, 1% ofan inch long: 
Shell cinereous varied with brownifh, or white radiate with 
brown: margin brown or black, within grey radiate with 
brown: dottom brown or grey. 
j WOR Mec 4C Cere 
