2 ENTOMOLOGICAL NEWS. [J an -> ' 1 7 



cal Survey west of the looth Meridian and in 1883 was ap- 

 pointed engraver in the U. S. Department of Agriculture. 

 From this time his work became known in Entomology and a 

 large number of excellent illustrations of economic insects, 

 published by the Department are the work of Mr. Heidemann. 



With the development of photo-engraving his art ceased to 

 be useful and in 1898 he obtained a position as assistant in the 

 Bureau of Entomology becoming a specialist in Hemiptera, 

 the study of which he had taken up only half a dozen years 

 before, under the guidance and inspiration of his friends Al- 

 bert Koebele, E. A. Schwa rz and Theodore Pergande. 



Although he thus began his entomological studies when he 

 was well beyond fifty years of age, he applied himself with 

 such zeal to the science, that he became known all over the 

 world as an authority on Hemiptera. 



Heidemann was a member of the Entomological and Bio- 

 logical Societies of Washington, and of the American Asso- 

 ciation of Economic Entomologists ; he was a charter member 

 of the Entomological Society of America and a Fellow of the 

 American Association for the Advancement of Science. He 

 was elected President of the Washington Entomological So- 

 ciety for two consecutive years 1909, 1910. 



His entomological writings number about 35 titles. 



Mr. Heidemann is survived by his wife, Mrs. Mica Heide-- 

 mann, well known as a sculptress and as a maker of insect 



models. 



X. 



> ' 



A Further Note on Zonocerus elegans (Orth.). 



[Since the publication of the article on this grasshopper in the News 

 for November, 1916, pages 420-421, the following has been received.! 



There is usually one generation a year, but a partial second one, con- 

 sisting of a few individuals reaching the last nymphal instar, is found 

 in favorable years and a few localities. The first instar nymphs appear 

 from the middle of September onwards, being plentiful early in Octo- 

 ber. The five nymphal stages are completed by January I. The differ- 

 ence here noted is due to my previous observations covering only one 

 season and that an exceptionally favorable one. S. G. RICH, Adams 

 .Mission Station, Natal, South Africa. 



