614 aptendix. 



that of microscopica, Gray, the shell having been already described 

 as Struthiolaria microscopica in the " Voyage of the Blossom." 



The specimen of 8. cancellata we figure was taken by one of 

 the authors during the voyage of H. M. S. " Action" from Eng- 

 land to Rio Janeiro, who confirmed by examination the principal 

 of the observations of Mr. Macdonald above quoted ; during 

 the continuation of the voyage of the " Actseon" to Hong-kong, 

 he met with and has recently described three other species. 



Ex. S. cancellata, D'Orbiyny, pi. 137, fig. 4. 



Species of Sinusigera. 

 cancellata, D'Orb. trochoides, A. Adams. 



glabra, A. Adams. vitrea, A Adams. 



GASTEROPODA. 



Vol. i. p. 70. Genus MUREX. 

 The sub-gen. Vitularia should form a genus in the sub-family 

 Purpurince. The operculum is oblong, with the nucleus on the 

 middle of the outer edge. Trophon labiosus and crassilabrum 

 are species of Vitularia. 



Vol. i. p. 79. Genus NEPTUNEA. 

 Sub-gen. volutopsius, Morch (Strombella, Gray, not Schlut.). 

 Shell with the outer lip expanded. N. Norvegica is an ex- 

 ample. 



Vol. i. p. 87. Fain. TUBRITIDiE. 



This family, as indicated at page 240, should be placed in the 

 sub-order Toad/era, and be designated Titrridce. The name of 

 the sub-family, Turritina;, should also be changed to Turrvflce, 

 and the terminations of the species of the genus Tunis should 

 be feminine. 



