[ i8 ] 

 NAUTILUS. The Chambered Nautilus. 



F I G. 63. 



NAUTILUS Spiralis umbillcatus geniculis infculptis. 



The fpiral umbilicated nautilus with deep joints, 



The colour, while the fiHi is alive, is a fine pellucid crimfon j when 

 dead, is white. 



It is found alive on the fucus veficulofus, and Is a very common 

 fhell on all the coafl;, and feems to be an univerfal littoral one, by 

 the numbers found at Rlmlno, and in the fand of the South Seas. 



Lin. S. N. p. 1 162, No. 276. Nautilus Beccarii. 



Planch. Tab. i. Fig. i. Gualtier, Tab. 19. Fig. H, H, I. 



F I G. 64. 



NAUTILUS Beccarii perverfus, 



The fpiral reveifed nautilus. 



This exaftly refembles N°63, except being reverfed, and Is not un- 

 commonly found in the fame fand with it. 



F I G. 65. 



NAUTILUS Spiralis geniculis crenatls. 



The fpiral nautilus, with crenated joints, 



The colour opaque white. 



The finefl fpccimcns are from Shepey — not uncommon. 



Lin. S. N. p. 1162, No. 275, ciifpus. Planch T. i. f. 2. Guilt T. 19. f. A. D. 



FIG. 66. 



