WORMS. TESTACEA. 66. Oftrea. 269 



ptrinao Shell orange, with 22 rounded rays and plaited margin : 

 lower-yalve flatter. 

 Valent. abh. tab. 13, fig, I, 

 Cbemn. conch. 7. tab, 65. fig,6lS. 



Inhabits India: fome of the rays are fcaly ? and fome of the 

 grooves have granulate lines. 



furnda. Shell equally convex, both fides with 20 glabrous rays, the 

 interftices with tranfverfe crowded wrinkles : the 

 margin with plaited teeth. 

 Lister conch, tab. 169. fig, p. 

 Chemn, conch, 7; tab, 65 -fig, 621. a, b. 



Inhabits the Indian and American feas : ears very minute: lower- 

 yalve white, upper-valve yellowifh varied with brown, white 

 and cinereous. 



¥7ff> 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. ta£. 66, fig, 629. 



2. &&? Ma/, 3, tab, 97. /j-, 14. a 



Chemn. conch. 7. ta£. 66. Jig, 630, 931, 

 Inhabits the Red Sea 1 2 inches long and a little narrower. 

 Shell thin, fragile, fulphur or orange, fqmetimes red with an. 

 orange hinge and a femilunar white band, or varied witfy 

 whit* and pale tawny with a fanguineous border : lower-valve 

 With equal rays, thofe of the »^?r-o>tf/W.alternateIy lefs, 



forphyrea. Shell convex, purple, within white or red, with 25 thick 

 rounded fcaly rays. *■ 



Chemn. conch, 7, tab. 66. figs 632, 



Inhabits the Red Sea ; 2 inches 3 lines long and as much broad J 

 faell varied with a few white lpots. 



Vitrea^ Shell hyaline with an acute margin, very {lender rays, anjl 

 concentric fcaly curves. 

 Chemn. conch, y, tab. 67. fig.- 637; a, 



2. Chemn cench, J, tab, 6j,fig, 637. b, 5. 



Inhabits the North Seas j among Fuci and Zoophytes : fize of \ 

 pea; y£v?// fmooth, brittle, white, or varied with white ancl 

 red j one ear emarginate and fpinous, 



< Tranqtieha-» Shell with 2a, rounded rays, the interludes very finet-g 

 #*■ wrinkled: margin repand. 



Lifer conch, tab. J79. Gualt. ted. tab: 73; L,M» 



Knorr Vergn. 2 V . tab s 4, fig. 2, 3. 



Born Muj\ Caf. Find, teft, tab \ 7, fig. z, 



Chem.% 



