251 



Shell white, opaque, vith three whorls, which are lon- 

 gitudinally ribbed. Turt. Lin. iv. p. 3S7. 



16. 

 Buccinum laeve : tefta lacvi tribus anfractibus, Cauda elongata: L.^VE. 

 color albus opacus ; anfraclus prixnus fecundo multo ven- 

 tricofior ; apeitura oralis. 



. Lin. Trans, ill. t. 13. f. 7. S. (Adams.) 



Shell fmooth, with three whorls and a long beak. Turl. 

 Lin. iv. p. 387. 



17. 



Buccinum obtufiffimum : tefla Icevi, tribus anfraftibus, aper- Obtusissimum. 

 tura coarclata, cauda elongata. 



A praecedente differt et in aperturae forma, et quod anfraftus 

 ipfi funt quam proxime magnitudinis a^qualis. 



Lin. Trans, iii. t. 13. f, 9. 10. (Adams) 



Shell fmooth, with three whorls, and a long beak : aper- 

 ture contracted. Turt. Lin. iv. p. 387. 



The four preceding (hells we have been obliged to copy 

 from Mr. Adams, who found them on the coafl of Peni- 

 brokeJJiire; they are all microfcopic fpecies. 



The two firft feem to differ in nothinfj but the number 

 of volutions. The two laft appear to be young unformed 

 {hells not perfefled at the apex ; poffibly the young of 

 Murex ^(//'^(^ui jullefcaped from the egg. 



Kk 2 It 



