Class VI. NAUTILUS. SAIL-SHELL. £47 



Gm. Lin. 3370. Mont. Test. Br. 187- Sup. Q. crispus. 



Lin. Tr. viii. 115. t. 18. f. 5. 



* N. with a spiral shell; half heart-shaped 

 aperture ; spires connected ; about twenty 

 joints, crenated; minute; inhabits the sea. 



Devonshire, Dorsetshire, and on the south 

 coast of Wales. 



Gm. Lin. 3370. Mont. Test. Br. 186. id. 7> beccaru. 



Lin. Tr. viii. Il6. Sup. 74. t. 18. /. 4. 



* N. with a spiral shell, aperture obovate, vo- 

 lutions four or five, swelling, connected j joints 

 furrowed. 



Inhabits the sea. 



* N. with the volutions reversed ; agrees with var. b. 

 the preceding in every other respect. 



PERVERSUS. 



Mont. Test. Br. Sup. 81. t. 18. /. 3. 8. inflatus, 



* N. with a spiral, brown, opaque shell, with 

 three lobated volutions ; the anterior end sub- 

 globose; minute. 



Sand on the coast of Devon ; rare. 



