1 86 WORMS. TESTACEA. 58. Tcliina. 



Inhabits European Seas: an inch broad and very brittle: the 

 ftriae are eroded by longitudinal ones : hinge with a fingle 

 cleft tooth in one valve, in the other 2, both valves without 

 lateral ones: colour white. 



*Dfj>reJ/a. Shell very thick depreiled oblong white, with tranfverfe 

 concentric ftrias. 

 Inhabits Europe, Brit. ZooL iv. p. 87. tab. 47. ftg. 27^ 



* Cratfa. Shell very thick broad depreffed, with numerous concentric 

 frriae : the fides unequal. 

 Pennant Brit. Zool. iv. tab. tifi.fig. 28. 

 Inhabits Europe. 1 \ of an inch broad, 1 | long, 



Ru?ofa. Shell ovate with tranfverfe undulate wrinkles: hinge with 

 2 lateral teeth; left valve with a iingie cleft primary 

 one, the other 2. 



Bom. Muf. Caf. Vind. tejl. tab. 2, fig. 3, 4. 



Chemn. Conch. 6. tab. 8. jig. 62. 



Inhabits Indian and American Seas', a little broader than it is 

 long and fmooth within: white or yellowi/h. 



htflata* Shell rounded thick fnowy gibbous,, with very fine longi- 

 tudinal Itri-e. 

 Inhabits Chemn. conch, 6, tab. y fig. 76. 



Muitangu- Shell ovate, a little ventricofe, unequivalve, with decufTate 

 l ata * ftrias and finuate before : hinge with a fingle primary 



cleft tooth in the left valve, and 2 in the other. 

 Chemn conch. 6. ta&% Q.fi%. 77. 

 Inhabits mores of frannuebar : whitifh afh. 



Papyracea. Shell thin ovate ventricofe and tranfverfely filiate, with 

 plaited wrinkles on the fore-part : hinges without 

 lateral teeth, and with 2 primary ones. 



Inhabits Guinea. Chemn. conch. 6. tab. 9 fg. 78. 



Shell about 3 lines long, and 1 \ inch broad ; brittle, excavated 

 in the middle, white within and imooth. 



Gibbofa. Shell fomething triangular ventricofe and finely ftriate tranf- 

 verfely : hinge with a ftrong lateral tooth. 



Inhabits Gualt. tejt. tab. yy. fg. Q. 



Shell whitifh-green, 'inflected each fide, fhorter on one fide: 

 hinge with a fingle primary tooth. 



♦ IneguilaT 



