ERRATA 
page 11, line 13 
for 1815 read 1816 
page 35, line 16 
for pumilum read pusillum 
page 88, line 16 
for ovati read ovoidei 
page 111, line 10 
for that read than 
page 176, line 26 
for vermillion read vermilion 
page 188, line 26 
for lineas latas read lineis latis 
page 219, line 8 
delete August 6, 1940 
page 219, line 9 
after cliffs insert August 6, 1940 
page 231, line 1 
transpose to bottom of page 
page 249, plate VI 
for C. pumila C. Seweinf. read C. pumila C. Schweinf. 
[ xvii ] 
