OF WASHINGTON, VOLUME XIV, 1912. 193 



The second paper was by O. Heidemann, on "New North 

 American Species of Tingitidse." 



Under "Notes on Nearctic Orthoptera" Mr. Caudell spoke 

 of a catalogue of the Orthoptera of Nearctic America which he 

 has in course of preparation. Following his comments he 

 presented a paper by T. D. A. Cockerell on "A New Genus 

 of Orthoptera from Guatemala." 



ENTOMOLOGY AT THE CENTENARY OF THE ACADEMY 

 OF NATURAL SCIENCES OF PHILADELPHIA. 



BY HENRY LORENZ VIERECK. 



At the one hundredth anniversary of the Academy the whole 

 field of the natural sciences was fittingly -epresented. If 

 any one branch of science paid mon homage or received more 

 recognition than another on this memorial occasion, then that 

 honor belongs to entomology, for from the beginning until 

 the end of the proceedings the great achievements of bhe Aca- 

 demy and of entomology, from modest beginnings, were 

 brought out in the addresses. 



Nineteen entomologists were appointed as delegates from 

 at least seven distinctly entomological organizations and a 

 number of more general institutions of learning. O the 

 entomologist delegates Prof. P. P. Calvert, Prof. J. H. Corn- 

 stock, Mr. E. T. Cresson, Prof. S. A. Forbes, Mr. Samuel 

 Henshaw, Dr. W. J. Holland, Dr. L. O. Howard, Mr. C. W. 

 Johnson, Dr. Henry Skinner, Mr. H. L. Viereck, and Prof. 

 F. M. Webster were present at the celebration, which covered 

 a period of three days or from March 19 to March 21. 



The entomological organizations represented were the 

 American Entomological Society, the Association of Economic 

 Entomologists, Societe Entomologique de France, the Ento- 

 mological Society of America, the Entomological Society of 

 London, the Entomological Society of Ontario, and the Ento- 

 mological Society of Washington. 



The entomological papers read were by Dr. Henry Skinner 

 on "Mimicry in Butterflies," and Mr. James A. G. Rehn on 

 "The Orthopteran Inhabitants of the Sonoran Creosote Bush." 



The splendid entomological resources of the Academy were 

 shown to the interested, who were also introduced to the m w 

 entomological quarters just nearing completion. 



In the address of the president at he opening exercises 

 such entomological pioneers as Thomas Say, Titian R. Peale, 



'To be published later. 



