WORMS. TESTACEA. 66. Oftrea, 259 



Ziczac. Shell with 18 flattened rays. 



Lijier concb. tab. 1 86. fig. 5. 



Regenf. conch. 1, tab. II. fig. 53- 



Knorr Vergn. 2. tab. 19, fig. 3. /. 20,/, 1, 



C£m». rrtwv&. J. tab % 61. fig. 590—592, 



Inhabits the American Oiean ; fometimes of one colour, fometimes 

 vaiiegated : ears very finely wrinkled : lonver-valve convex, 

 with 18 — 20 rays, which are very finely ftriate tranfverfely, 

 and about twice the number of perpendicular ftrijc withm ; 

 upper-valve flat, with about twice as many angular lines as 

 there are rays. 



Striatula. Shell with 16 faint rays with^ tranfverfe membranaceous 



ftrias ; the margin very entire. 

 Inhabits the Indian Ocean. ' Muf. Lud. Vlr. 523. n. 101. 

 Shell middle fized, varied with purple and white, within yel- 



lowifh : interftices of the rays white : lower-valve almoit as 



flat as the upper. 



Minuta, Shell with 20 convex rays. 



Inhabits the Indian Ocean. Muf. Lud. Vlr. 524. n. 102. 



Shell about the fize of a nut: lower -valve white and very con- 

 vex : upper-valve white clouded with brown, flatter and 

 plaited, 



PleuroncSies Shell equi valve, with 12 doubled rays, and fmooth on the 

 outiide. 

 Barbut % tab* 8 fig. 1. Rumpf. Muf. t. 45. A, B. 

 Argenv. conch, tab. 2gf. G. Guait. teft. t. 73. R. 

 Bonan. recr. 3. fig. 354. Muf Kirch. 2.f. 1 08. 

 Petiv. A?nb.tab\\j.fig. 14. Lejer teji. f.Sg. 

 Klein ofir. tab. <)• fig- 30* Knorr Vergn. I. /#£. 20._/*. 3, 4. 

 Chemn conch. 7. /#£. 61. _/?£. 595. 



2. Knorr Vergn. 5. ta£ 2\. fig. 6. 



Inhabits the Indian Ocean ; fometimes reddiih, or flefh-colour, or 

 liver-colour, within filvery ; 2) orange radiate with red : 4J 

 inches long and gaping at each end. 



Laurcntii* Upper-valve fubconvex, fmooth, with fine perpendicular 

 lines cro fling very fine concentric tranfverfe ftrias ; 

 lower-valve with 24. rays, and 48 ftrise within. 



Chemn conch. 7. tab. 61, fig. 593. 



Inhabits mores of South America : very rare. 



Shell 2 inches 8 lines long and about as much broad : upper-valve 

 chefnut with white rays and whitifh fpots ; Irwer-vdlve white 

 fhaded with yellowifh, the valves a little darker. 



K k 2 Japcnka 



