WORMS. TESTACEA. 66. Oftrea. 269 
Gitrinas Shell orange, with 22 rounded rays and plaited margin: 
lower-valve flatter. 
Valent. abb. tab. 133, fg. 1. —— 
Chemn. conch. 7. tab. 65. fig. 618. 
Inhabits Jndia: fome of the rays are fcaly, and fome of the 
grooves have granulate lines. 
Turgida. Shell equally convex, both fides with 20 glabrous rays, the 
interftices with tranfverfe crowded wrinkles; the 
margin with plaited teeth, e 
Lister. conch. tab. 169. fig. 6. 
Chemn. conch. 7° tab. 65. fig. 621. a, b. 
Inhabits the Jzdian and American {ezs: eafs Very minute : lower. 
valve white, upper-valve yellowifh varied with brown, white 
and cinereous, 
Sulphurea. Shell flattened, thin, pellucid, ftriate, with numerous im- 
bricate rays; the margin with crenate plaits. 
Seba Muf 3. rab. 87. fig. 13, 18. 
Chemn, conch. 7. tab. 66. fig. 629. 
z, Seba Muf, 3- tab..97. fig. 14. à 
Chemn. conch. 7 tab. 66. fig. 630, 931, 
Inhabits the Red Sea: 2 inches long and a little narrower. 
Sb thin, fragile, fulphur or orange, fometimes red with an 
orange hinge and a femilunar white band, or varied with 
white and pale tawny with a fanguineous border: /awer-valve 
with equal rays, thofe of the wsper-valve alternately lefs, 
Porphyrea. Shell convex, purple, within white or red, with 25 thick 
rounded fcaly rays. SAN 
Chemn. conch. 7. tab. 66. fig. 632. 
Inhabits the Red Sea; 2 inches 3 lines long and as much broad: 
iei! varied with a few white fpots, ^ — 
Viirea, Shell hyaline with an acute margin, very flender rays, and 
concentric fcaly curves. 
Chemn. concb. 7. tab, 67. fig. 637. a. 
2- Chemn conch, 7. tab. 67. fig. 637. b, 3. 
Inhabits the North Seas; among Fuci and Zoophytes: fize of ¢ 
pea; /bell {mooth, brittle, white, or varjed with white and 
red; one ear emarginate and fpinous, 
Jranqueba- Shell with 2e rounded rays, the interítices very finely 
dia. wrinkled; margin repand. 
Lifler conch. tab. 179. Gualt. teh, tab; 73. L,M. 
Knorr Vergn. 2. tab. 4, fig. 2, 3. 
Born Mw. Caf. Vind. teft. tab. 7, fig. 2. 
Chemy 
