WORMS. TESTACEA. 66. Oftrea. 265 



Pesfelit. Shell with 9 ftriate rough rays : one of the ears very fmall. 



Bonan. recr. z. fig. 7. Muf Kirch. z.f. 8. 



Born. Muf. Cdf. Vind. reft, tab. 6. fig. 2. 



Chemn. conch* 7. tab. 64. fig. 612. /. 65./ 613. 



Inhabits the mores of Africa: fmall» thin, pellucid, generally 

 pale Mem-colour fpotted and veined, within glabrous white, 

 with fubundulate rays and crenate plaits on the margin : ears 

 with tranfverfe knotty ibiaB. 



Pellucens. Shell nearly equivalve with 9 rays> fmooth with fpcon-like.; 

 hemifphxrial fcales on the lower valve. 

 i. Cbemn. conch. 7. tab. 66. fig* 62$ — 627. 



Inhabits the African Seas: ovate, minute* pellucid, glabrotis, 

 white; the upper-*vaPve fpotted with red^ 



Obliterate Shell fmooth on the dutfide with 24 doubled rays. 



Chenin, conch. 7. tab. 66. fig. 622 — 624. 



Inhabits the Indian Ocean-, refembles V. Pleuronecles, but is 

 lefs : fhell with very fine decuflate Aria? ; the lower- valve pale 

 reddifh, and yellowiih at the hinge j upper-valve dirty red 

 or pale tawny. 



ianguinen. Shell equivalve with 22 rough rays: ears fmall.; 



Lister conch, tab. lS§.fig. 22. Gua/t. test, tab. l\> M? 



Chemn* conch. J. tab. 66. fig 628. 



Inhabits the Mediterranean, Atlantic and American Seas* 



Shell rounai/h flattiih, red fcariet or tawny ; the (paces between 



the rays ftriate longitudinally: about 2 inches long and 1^ 



broad. 



®Varia. Shell eqliivalve with about 30 compreffed rays befet with 

 tranfverfe prickly fcales: one ear Very fmalL 



Donovans Britifli Shells, i. tab. I. fig. !• 



Pennant Brit*Zool. iv, tab. 61. fig 64. 



Da Cofia Brit conch, t. 10. f. I, 2, 4; 5, 7, 9. 



Lifter conch, tab. 187. Argen-ville conch, tab, 24. H« 



Bonan. recr. and Muf. Kirch* z. fig. <j, 



Gua/t. teft* tab. 73. G, j£» tab. 74. St« 



iC/z0>r Vergn. 2. ta£. I 8. fig, 3 — 5. /. n. f* 3, f. 12./*. 5, 6„ 

 r. 16,^. 2. Argetiv* conch, tab. 24. H. 



'Cbemn. conch. 7. ;a£. 66. fig. 633, 634; 



Inhabits moil European Seas: varies much in colour, from pale 

 yellow to various (hades of orange and brown, with fometimes 

 a few white fpots : fhell rather convex, with rough jags or 

 fpinous protuberances down the rays ; fpaces between the rays 

 Hot ftriate ; one ear very fmall with a double row of fpines, the 

 fethef with wrinkled plaits and armed beneath with 5-7 fpines. 



VOL, IV. —LI *p n fa 



