1927 ] 
Helophorus aquaticus L. in America 
175 
Fowler’s “British Coleoptera,” and there seems to be nothing 
with which it could well be confused. Fowler gives the length of 
the species as 5. — 7 mm., and states that the pronotum varies 
from green to bronze and that the species is common throughout 
the kingdom. 
More recently I have seen four American specimens of the 
species in the collections of the Boston Society of Natural History 
and of Mr. C. A. Frost. The former contained two specimens 
taken by Professor H. M. Parshley at Orono, Me., Apr. 24 
and 13 respectively; the latter, two from Orono, Me., May 3, 
and Penobsquis, N. B., July 23, the second taken by Mr. 
Frost. The species is well distributed and probably native, but 
apparently rare. 
