334 ARGONAUTA. 



aperture is also narrower, and at the end next the spine, it 

 is on each side drawn out into a sharp point. The lateral 

 ridges in some of die Mediterranean shells are occasionally 

 forked, but they are much more so in the oriental vaiety, 

 and according to Favanne, the shell is also thicker It is 

 probable that ' Le petit Pantile strie' of Favanne, t. 7. 

 f. C 4. is the young of ihis species. 



tuberctjlata. 2. Shell with the keel rather broad 

 and bluntly toothed ; lateral ridges tuber- 

 cular. 



Argonauta tuberculata. Shaw Nat. Misc. xxiii t. 995. 



Argonauta nodosa. Solunders MSS. Portland Cata- 

 logue p. 96. lot 2120. 



Argonauta Argo, Var. /?. Gmelin, p. 3368. 



Argonauta oryzata. Mas. Geversianum, p. 252. No. 133. 



Le Nautile & grains de Ris. Favanne, i. p. 714. t. 7. f. 

 A 9. 



Rumphius, t. 18. No. 1. Gualter, t. 12. f. B. Petiver 

 J ml), t. 10. f. 1. Argenville, t. 5. f. C. Seba, hi. t. 

 84. f. 4. Knorr, vi. t. 31. Martini, i. t. 17. f- 156. 

 Inhabits the coasts of Amboyua. Rumphius. Mozambique. 



Favanne. Cape of Good Hope. Humphreys. 

 This species has a broader keel, and may be readily known 



from A. Argo, by its having the lateral ridges strongly tu- 

 bercular. 



hians. 3. Shell with the keel dilating outwards ; 

 lateral ridges distant, alternately shorter ; 

 aperture dilated. 



Argonauta hians. Solander's MSS. Portland Catalogue, 



p. 44. lot 1055. 

 Argonauta Argo, Var. Q. Born Museum, p. 140. 

 Argonauta Argo, Var. S. Gmelin, p. 3368. 

 Le Papier Brouillard. Favanne, i. p. 712. 

 Rumphius, t. 18. f. B. Gualter, t. 12. f. C. Petiver 



Amb. t. 10. f. 2. Argenville, t. 5. f. B. Seba, iii. t. 



84. f. 9 to 12. Geve, t. 2. f. 6 and 7. Martini, i. t. 



17. f. 158 and 159- 

 Inhabits the coasts of Mexico, and the Molucca Islands. Fa- 

 vanne. China. Humphreys. 

 The diameter of the whole shell rarely exceeds an inch and a 

 half, and the aperture is about an inch and a quarter long, 

 by near an iuch broad ; the ribs on the sides of the shell are 



