56 Mr. Waterhousp'fi Dexrripfioiis of Hctcvonicru, ^c. 



Opatram sernrollis, Walker, belongs to the genus Bradiiiaciits, 

 ( BolitophaginiB ). 



Ry(jmo(his pedmoides, White, as figured and described by 

 Blanchard, (Voy. Pol. Sud.), has little in common with White's 

 insect which I have already recorded as belonging to the Hi/dro- 

 philidd' ; Blanchard's insect appears from the figure to belong to 

 the Helopidw. 



Tanychihts nietallicus, White, as figured and described by 

 Blanchard is an Amarosoma, {Hdopidoi). Tanychilus of New- 

 man belongs to the family Cistelidce, and as the gemis was well 

 known to White, (Newman's types being in the Museum), it 

 would seem highly probable that Blanchard's insect is quite 

 distinct from White's, especially as we possess a species of 

 Tanychilus from New Zealand, Avhich agrees very nearly with 

 White's description. 



