ERRATA 
P. 53, line 14 from top, begin new sentence with Vexillum. 
P. 58, line 10 from top, for Comarea read Comarca. 
P. 60, first line, for glandula read glandulae. 
P. 60, line 5 from top, for sg RO read purpurascentes. 
P. 184, last line, for solutions read solut 
Pp. 189 and 191, exchange legends of au ‘ and fig. 9. 
P. 261, line 18 from top, for fungus read fungous. 
Pp. 289, 290, 293, tables VI, VII, VIII, last column, for (total control) read 
(total-control), 
