22 Journal New York Entomological Society, [Voi. xviii. 



Kieffer, J. J. 



1907. Genera Dryinidarum. Wytsman's Gen., Ins. Fasc. 

 Perkins, R. C. L. 



1905. Leaf hoppers and their natural enemies, Part i, Dryinidae. Bull. 

 Hawaii Expt. Sta., No. i, pp. 69. 

 West-wood, J. O. 



1840. An introduction to the modern classification of insects. 2 vols., 

 London, 1839-40. 

 Wheeler, W. M. 



1908. Comparative ethology of European and American ants. Journ. f. 



Psychol, u. Neurol., Vol. 13, pp. 404-435, pis. 3, 4. 



WESTCHESTER HETEROPTERA. — II. ADDITIONS, 

 CORRECTIONS AND NEW RECORDS. 



By J. R. DE LA Torre Bueno, 



White Plains, N. Y. 



The raison d'etre of this list is set forth in its predecessor. In 

 this are given the fruits of the work of the season of 1909, including 

 the winter of 1908-9. As will be seen, there are no less than 30 

 species added to those recorded last year, which brings the total up 

 to 138 species for Westchester Co. When it is considered that Mr. 

 E. P. Van Duzee's Buffalo list, the result of his collecting and that 

 of others, yielded only 127 species for the families I enumerate, the 

 present relation is not to be despised. 



A number of corrections due to the ceaseless change of nomen- 

 clature have to be made. These will be noted in their proper places. 

 The identification of forms of our fauna by means of the imperfect 

 descriptions of the early hemipterists have saddled us at this day 

 with a burden of misinformation which very fortunately is being 

 reduced year by year by the labors, alas ! not of our own, but of 

 European entomologists. It appears to me a fundamental axiom that 

 every entomologist, and very especially every hemipterist, before 

 referring an x\merican form to a genus peculiar to some other region 

 of the globe, should make it his business to procure authenticated 

 specimens of the type species of that genus. Then a careful com- 

 parison between the two forms should serve to settle the point 



