ERRATA, 



Page 21a. — Geometra vernaria — delete. 



Page 139. — Pterostoma palpina — delete. 



Page 241. — Instead of "much more likely that we are the 

 descendants ' de Guillaume le Conquerant,' " read 

 " mucli more likely that wo are the descendants of 

 tlie companions 'do (iuillaume lo Conquerant,'" 



