EXPLANATION OF PLATE XX. 



Fig'. 1. Chdo)ii(i iiiyduf!, Linn. From a specimen regarded 

 as just hatched, from Flint Island, Central South 

 Pacific Ocean. About natui-al size. 



Fig. 2. CheIo)il(i niydas, Linn. From a specimen captured 

 at Botany Bay, near Sydney, New South Wales. 

 About Natural size. 



