814 THE AMERICAN NATURALIST. [VoL. XXXIII. 
be I am unable to conjecture. Lemcopterus, or what has been 
universally conceded as that species, has been collected in 
Panama and other localities in Central America; but as the 
collecting was probably somewhat superficial, we have very 
likely much to learn regarding the species in that country. 
Along the Atlantic coast from central Florida to Nova 
Scotia and inland to northern Indiana, Ohio, and Ontario, we 
Figures illustrating variation in wings of Atlantic maritime race of Blissus leucopterus. 
have what I have here termed a maritime race, composed of 
individuals of both sexes whose wings may be nearly or quite 
aborted, or varying between these and the completely winged, 
and which freely interbreed, both with each other and the 
inland race, among whom brachypterous individuals are not 
usually found. 
On the Pacific coast, in the vicinity of San Francisco, a 
similar race occurs, including also brachypterous individuals. 
