TROCHUS. 793 



La Bouche double granuleuse. Favanne, ii. p. 49. t. 8. f. 



A 2. 

 Lister Conch, t. .584. f. 42, and t. 645. f. 37. Rumphius, 



t. 21. f. E. Petiver Amb. t. 1 1. f. 2. ArgenviUe, t. 6. 



f. N. Adonson Senegal, t. 12. f. 2. Geve. t. 18. f.l 65, 



167, and l68. 

 Variety. With the transverse ribs entire. 

 Trochus Labeo australis. Chemnitz, xi. p. [Qo. 1. 196. f. 



1890 and I89I. 

 Le Limagon Ratelier. Fatmnne, ii. p. 48. t. 8. f. A 1. ? 

 Inhabits the coasts of Africa and Asia. Linnceus. Amboyna. 

 Rumphius. Senegal. Adanson. Isle of France and Straights 

 of Manilla. Favanne. South Sea. Chemnitz. 

 Shell generally about an inch long, and ten lines broad, of a 

 whitish or reddish colour, tessellated with darker spots on 

 the transverse bands, which are more or less broken into 

 crowded nodules ; the inside is grooved and beautifully 

 pearly, and within the outer lip is a thick plaited border of 

 fine ivory-white, 



ASPER. 81. Shell ovate, with transverse nodulous 

 ribs and intermediate striae ; aperture some- 

 what pearly, with the outer lip grooved and 

 double, and the pillar toothed. 



Trochus asper. Chemnitz, v. p. QS. 1. 166. f. 1582. Gwc- 



lin, p. 3583. Schreibers Conch, i. p. 258. 

 Trochus, No. 31. Schroeter Einl. i. p. 692. 

 La Framboise. Favanne, ii. p. 50. t. 8. f. A 3. 



Inhabits the coasts of New Zealand. Favanne. 



This shell is of the same size, and is nearly allied to T. Labeo, 

 of which it may be doubted whether it is more than a Va- 

 riety ; the transverse ribs are more strongly and more dis- 

 tinctly tuberculated, and more distant from each other, with 

 narrow transverse striae in their interstices ; it is of an earthy 

 or dull grey colour, with the tubercles somewhat alternately 

 black. 



QUADRiCARiNATUS. 82. Shell ovate, with trans- 

 verse nodulous ribs, and four muricated 

 transverse keels ; aperture silvery, with the 

 outer lip double and grooved, and the pillar 

 toothed. 



Trochus quadricarinatus. Chemnitz, xi. p. l67. t. I96. f. 

 1892 and 1893. 



