82 
THE CHINCH BUG. 
States. In its north era most habitat it would not be at all surprising 
that it should prefer a sandy, rather than a clay, soil, the former being 
looser and warmer on or near the surface. (See fig. 6.) 
In conclusion, then, on this point .it may be stated that if Blissus 
leucopterus originated in the Western Hemisphere it was probably near 
the tropics, and it is not impossible that its generic ancestors may have 
beeu carried from Europe or Africa by either the north equatorial or 
the main equatorial Atlantic currents, landing them on the northern 
shores of South America or on some closely located islands, from which 
the species has spread coastwise around the Caribbean Sea and the 
Gulf of Mexico, as previously indicated. In this connection it is inter- 
esting to note that specimens from Grenada, collected on the Mount 
Joy and Caliveny estates by Mr. H. H. Smith in June and September, 
show that the species here attains a large size and is more a ariable, 
both in size and markings, than is commonly found to be the case 
the eastern United States.* 
* TJhier on Hemiptera-Heteroptera from St. Vincent and Grenada, Proc. Zool. Soc, 
London, 1894. 
