LIST OF IRISH TESTACEA. 



529 



the three next the apex are twisted like a 

 cork-screw, and terminate in a sharp point ; 

 the five lower whorls slope gradually to a ca- 

 rinated ridge, which commences in the centre 

 of the outer margin of the lip, and loses it- 

 self in the fifth whorl., giving the volutions 

 the appearance of being flat at bottom : 

 the whorls are slightly wrinkled obliquely 

 across ; the lower whorl is considerably tu- 

 mid. Aperture somewhat angulated, sub- 

 oval, and a little depressed ; lip very thin, 

 and reflected on the columella at the l)ase, 

 with a deep and wide umbilicus. 

 Found by Mr Thomas Stephens in a pond in 

 the College Botanic Garden, and is in the 

 cabinet of Mr O'Kelly. Both this and the 

 preceding were found in his presence. 



26. elegantis- Donovan, Br. Sh. t. 179* Turbo acutus. — 



sima. Montagu, Test. Br. p. 298. t. 10. f, 2. Tur. 



elegantissimus. In sand from Portmarnock ; 

 rare. 



27. polita. Donovan, Brit. Shells, t. 177. Turbo albus. — 



Montagu, Test. Br. p. S98. Bantry Bay, rare. 



28. bifasciata. Donovan, Br. Sh.,t. 18. f. 1. T. fasciatus, — Mon- 



tagu, Test. Br. 346. Supp. t. 22. f. 1. Very 

 plentiful on the sand hills at Portmarnock 

 Burrow. 



29. Lackham- Montagu, Test. Br. p. 394. t. 11. f. 3. — Linn. 



ensis. Trans, viii. p. 212. 



30. obscura. Linn. Trans, viii. p. 212. t. 5. f. 11. — Montagu^ 



Test. Br. p. 391. ; Supp. t. 22. f. 5. One 

 specimen on a dry mud wall near Clonooney. 



31. lubrica. Montagu, Test. Br. p. 390.; Supp. t.22 f. 6. — 



Linn. Tr. viii. p. 213. t. 5. f. 12. Under 

 stones on the banks of the Bresna ; near Fer- 



