WORMS. TESTACEA. 66. Oftrea. 259 
Ziczace | Shell with 18 flattened rays. 
Lifter conch. tab. 186. fig. 5. 
Regent. conch. 1, tab. 11. fig. 53° 
Kaorr Vergn. 2. tab. 19, fig. 3. 1. 20, fs 1. 
Chemn. conch. 7. tab, 61. fig. 590—592. 
Inhabits the American Ocean ; fometimesof one colour, fometimes 
variegated: ears very finely wrinhled': Joexver-valve convex, 
with 18—420 rays, which are very finely ftriate tranfverfely, 
and about twice the number of perpendicular ftriz within ; 
upper-valve flat, with about twice as many angular liues as 
tiere are rays. 
Striatula, Shell with 16 faint rays with tranfverfe membranaceons 
ftri: ; the margin very entire. 
Inhabits the Indian Ocean. Muf. Lud. Ulr. 523. 2. 101. 
Shell middle fized, varied with purple and white, within yel- 
lowifh: interftices of the rays white: /ower-valve almolt as 
flat as the upper. 
Minutes, Shell with 20 convex rays. 
Inhabits the Judian Ocean. — Muf. Lud. Ulr. 524. n. 102. 
Shell about the fize of a nut: J/ower-valve white and very con- 
vex:  upper-valve white clouded with brown, flatter and 
plaited. 
Pleuroncse; Shell equivalve, with 12 doubled rays, and fmooth on the 
outfide, 
Barbut, tab, 8. fig. 1. Rumpf. Muf. t. 45. A, B. 
Argenv. conch. ta6. 27. G. — Gualt. teft, 1. 73. R. 
Dionan. recr. 3. fig. 354. Muf. Kirch. 2. f. 108. 
Petiv. Amb. /ab4i7. fig. 14. Lefer teft. f.89. 
Klein oftv. tab. 9. fig. 30° Knorr Vergn. 1. tad. 20. f. 4, 4. 
Chemn conch. 7. tab. 61. fig. $95. 
2, Knorr Vergn. 5. tab 21. fig. 6. 
Inhabits the. /zZiaz Ocean; fometimes reddifh, or flefh-colour, or 
liver-colour, within filvery ; 2) orange radiate with red: 4% 
inches long and gaping at each end. 
Laurenti, Upper-valve fubconvex, fmooth, with fine perpendicular 
lines crofling very fine concentric tranfverfe ftriz ; 
lower-valve with 24 rays, and 48 ftrie within. 
Chemn conch. 7. tab. 61, fig. 593. 
Inhabits fhores of South dmerica: very rare. 
Shell z inches 8 lines long and about 2s much broad: upper-valve 
chefnut with white rays and whitifh {pots ; /wer-valve white 
fhaded with yellowifh, the valves a little darker. 
Kk2 , Fapcnica 
