Biloba. 
Placenta. 
Sella. 
RS: 'pinofa 
JAculeata, 
Muricata, 
WORMS. TESTACEA. 67. Anomia. 285 
Shell 2-lobed, equal, ftriate. 
Found hitherto in a foffile ftate only. 
Shell orbicular, flat, Cic e hinge with 2 linear callofities 
growing internally on the. fhell. 
Lifter conch, tab. 225, fig. 60. tab. 226, f. 61. 
Seba Muf. 3. tab. go. Knorr Vergn. 2. tab. 24, f. 1. 
Chemn. conch. 8. tab. 79. fig. 716. 
Inhabits the Zziaez Ocean; 5 inches long and as much broad: 
foell white, fhining, filvery within, pellucid, thin, brittle, with 
very fine longitudinal itrim crofhüng the arched tranfveríe 
wrinkles: upper-valve nearly flat, 
Shell nearly quadrangular, convex, and very neatly clofed, 
bronzed; the margin repand. 
Bonann. Muf. Kirch. 2, fig. 135? 
Seba Muf. 3. tab. go. the middle figure, 
Chemr. conch. 8. tab. 79. fig. 714. 
2. Shell lefs, one valve white. 
Rumpf. Muf. tab.47. B. Gualt. teft, t. 104. B, 
Petiv. Amb, aq. tab. 20. fiz. 3. 
Seba Muf. 3. tab. go. 
Inhabis the Jndian Ocean; refembles the laft; 
Shel] lamellate, glofly within, often above 7 inches long and 
broad, with a few pale chefnut rays, and innumerable longi- 
tudinal ftriz refle&ing iridefcent colours towards the margin ; 
Linge with 2 callofities convergent towards the knob. 
Shell covered with fpines as long as the fhell. 
Inhabits Exgland, in a foffile ftate, 
Shell roundifh, prickly, the crown fmooth and recurved 
behind. 
Chemn. conch. 8. tab. 77. fig. 702. 
Inhabits Norway eas, on Fuci and Zoophytes : /oqwer-wvalve flat, 
{mooth and perforated at the crown. 
Shell hyaline, ventricofe, the crown bent towards the 
right: upper-valve longitudinally ftriate, the ftria 
ending in fcales and hollow fpines. 
Chemn, conch. 8. 8, 65. ign. 13. fig. A, B. 
2. Chemn. conch, 8. p. 66. vign. 13. fig. C, D. 
Inhabits Guinea.  Shellínowy; the lower-valve flat and very 
thin, the circumference of the perforation elevated, with a 
lateral tooth. - 
‘Squama, 
