INDEX. 



Unguis-almce Less., 

 Unguliformis Blv., 

 Unicolor (Lottia) Fbs., 

 Ustulata Rvc., . 



Variabilis Kr., . 

 Variabilis Sow., 

 Varicosa Rve., . 

 Variegata Blv., . 

 Variegata Reeve, 

 Vatheleti Pils., . 

 Venosa Rve., 

 Verriculata Rve., 

 Vernicosa Cpr., . 

 Vespertina Rve., 

 Vidua Rv., 

 Virescens Gmel., 



195 



164 



162 



162 



9 



154 



163 



154 



34 



32 



161 



116 



82 



174 

 96 



62 

 162 



NOTE. The Parts of Vol. XIII of the MANUAL were issued to 

 subscribers upon the following dates : 



Part 49, including pp. 1-64, plates 1-15, August 3, 1891. 

 Part 50, including pp. 65-112, plates 16-35, November 3; 1891. 

 Part 51, including pp. 113-160, plates 36-55, January 30, 1892. 

 Part 52, including pp. 161-196, plates 56-74, March, 1892. 



