WORMS, TESTACEA. 69. Pinna. 



Gualt. tefl.tab. 78. C, tab. 79, E* 

 Chemn. conch, 8. tab. 87. fig. 772. 

 Inhabits the Indian Ocean \ very rare. 



3°3 



Incurva. Shell narrow, long, naked, carinate, with tranfverfe un^ 

 dulate wrinkles. 

 Bonan recr. 2. fig. 23. Muf Kirch. l*f. 25. 

 Rumpfi Muf. tab. 46. I, K. Klein oflr. tab. I l.fi. 71. 

 Peti-v.Amb. aq. tab. 19. f 4, 5. 

 Chemn. conch. 8. tab. 90, ^ 778, 



Inhabits the Indian Ocean ; pale horn-colour, curyed at the hinge, 

 and marked with a few longitudinal ftri2e. 



Bicolor. Shell thin, infle&ed at the lateral margin, yellowifh with 

 black-brown rays ; with a few longitudinal ftrise ? 

 Chemn. conch. 8, tab. go. fig.jSo* 



Inhabits the Red Sea ; horn -colour, long ? with a few tranfverfe 

 curved flriae at the curved margin ; the larger end rounded, 



JExusta.' Shell flattifh, horny, with blackim rays fpots and clouds, 

 and many fmooth ftriae; a few fpinous ftrias with ca- 

 lculate fcales, 



Seba Muf 3. tab. 91. fig. 2. 



Chemn. conch. 8. tab. 91, jig, 782, 



Inhabits the Southern Ocean of India % rare, 



Vexillum, Shell truncate at the outer margin, dilated, naked, horny, 

 with a few black clouds ; longitudinally ftriate on the 

 fore-part and tranlverfely wrinkled behind. 



Born. Muf. Caf Find. teft. tab, 7, fig. 8, 



Chemn, conch. 8 f tab. 91. fig. 783. 



Inhabits India', extremely rare: faell appearing as if winged, 

 with a curved lateral margin. 



Pafyracea Shell very thin, brittle, horny, with longitudinal ribs ; the 



extreme margin roundifh. 

 Chemn. conch, 8. tab. 93. fig. J&6, 

 Inhabits the Indian Ocean: back of the ribs fometimes fcaly; in 



the middle of the fhell a violet-brown fpot, and a few tranf? ' 



verfe wrinkles at the lateral margin. 



Sangumea. Shell flattifh, (lightly incurved, red, with a few perpendi^ 

 cular fmooth ilrise. 



Inhabits Gualt. teft. tab. 79. fig. B, 



Shell 3 inches long: probably not a diltincl fpecies, 



Bullata 



