46e WORMS. TESTACEA. 79. Trochus. 
*Contrarius Shell with 4 contrary whorls marked with double ftriz: 
beak dilated. 
Lister tab, 950. Regenf. conch. tab. 4. fio. 36. 
Martin n. Mannigf 4. tab. 2 fig, 14. 
Favann, Conch. tab. 32. Y. N. tab. 7g. Y. F, tab. 80. I. R. 
Chemn. conch. 9g. tab. 105. fig. 894, 895. 
Inhabits European and North Seas. 
Eburneuse Shell contrary hyaline, with 6 yery finely crenulate whorls. 
Inhabits Chemn. conch. 9. tab. 105. fig. 899. 
Conditus. Shell tapering, very rongh with granulations ; lip doubled 
emarginate each fide and toothed within: aperture 
oval ftriate. 
Inhabits Chemn. conch. 10. tab, 162. fig. 1544, 1545. 
Clava. 
Shell tranfverfely ftriate and fpotted: whorls with plaited 
‘knots: beak afcending: lip doubled dilated, pillar-lip 
replicated and glabrous. 
Inhabits Pull Condore. Martyn univerf. conch, 2. tab. 57: 
Chema. conch: 10; f. 256. ign. 22. A, Be 
Hesagesus. Shell yellowifh hexagonal with tranfverfe granulate ftri: 
firft whorl tuberculate: aperture roundifh: lip dilated. 
Chemn. concb. 10. tab. 162. fig. 1554» 1555. 
nhabits the South Sea, andi is frequently found foffile. 
wen Shell with 5 fpirally ftriate whorls and remote ribs: beak 
AAT clofed. 
Inhabits the Welch coats, Linn. Tranf, ii. pe 55s 
Shell very minute elegant and pellucid, 
19. TROCHUS. Animal a Limax: fhel 
univalve, fpiral, more orlefs conic; aper- 
ture fomewhat angular or, eov the 
upper-fide tranfverfe and contracted; 
pillar placed obliquely. 
A. Erect, with the pillar perforated. 
Nikticus, Shell conic fmoothifh a ES A 
‘ Lister tab. 617. 619, 620. ' Okar Muf tab, 29. fige 5+ 
Bonan, recr. and. Maj. Kirch. 5. fig- 102. 
Rumpf. Muf. tab. 21. A, avd 3, 46 | 
Gualt. 
