ERRATA. 



Page 133, line 12 from top, for " C. decussafus" read " C. decussafa." 

 2'j4, line 13 from top, for " trunculus" read " vittatus." 

 280, line 6 from bottom, for " variatal" read '-varietal." 

 349, line 11 from top, for " sfriatula" read " gallina." 

 357, line 13 from top, for " elliptica, var. oblonga " read " ohhnga" 

 390, line 2 from top, for " Hi/pathi/ris" read " BhyncJionellaP 

 402, line 17 from top, the word '* types " should not be in italic?. 



