460 WORMS. TESTACEA. 79. Trochus. 



*Contrariu$ Shell with 4 contrary whorls marked with double ftriae 

 beak dilated. 

 Lister tab, 950. Regenf conch, tab. 4. fig. 36. 

 Martin n. Manmgf. 4. tab. 2 fig> 14. 



Favavn. Conch, tab. 32.^ N. ta£. 79*^ F- ^* 80. §: R. 

 Chemn. conch. 9 ta£. 105. fig. 894, 895. 

 Inhabits European and North Seas. 



Eburneus* Shell contrary hyaline, with 6 very finely crenulate whorls. 

 Inhabits- -Chemn, conch. 9. tab. 105. fig. 899, 



Conditus. Shell tapering, very rough with granulations; lip doubled 

 emarginate each fide and toothed within : aperture 

 oval Itriate. 

 Inhabits - Chemn. conch. 10. tab % \6z.fig. 1544, 1545. 



C!a<va. Shell tranfverfely ftriate and fpotted: whorls with plaited 

 knots: beak afcending: lip doubled dilated, pillar-lip 

 replicated and glabrous. 

 Inhabits Pullo Condore, Martyn un'rverf. conch, 2. tab, 57, 

 Chemn. conch. 10, p. 256. Vtgn, 22. A, B. 



Hexagonut. SJ ie ]l yellow ifli hexagonal with tranfverfe granulate ftriae: 

 firlt whorl tuberculate: aperture roundifh : lip dilated, 



Chemn, conch. 10. tab. 162. fig. 1554, 1 5 5 5 . 

 Inhabits the South Sea, and is frequently found foffile. 



inu ijji- g^gjj yy'ifa ^ fpirally filiate whorls and remote ribs: beak 

 clofed. 

 Inhabits the Welch coafls. Linn. Tranf, iii. />. 55, 

 Shell very minute elegant and pellucid. 



79. TROCHUS. Animal a Limax: Jhell 

 univalve, fpiral, more or lefs conic; aper- 

 ture fomewhat angular or rounded, the 

 upper- fide tranfverfe and contracted: 

 pillar placed obliquely. 



A. Erect, with the pillar perforated. 



KiLticus. Shell conic fmoothifh fubumbilicate. 



Lister tab. 617. 619, 620. Olear muf tab* 29.^. 5; 



Bonan, recr. and Muf Kirch. 3-/'£- 102, 



Rampf. Muf. tab. 21. A. and 3, 4. 



" irual(. 



