Sept.-Dec, 1920.] PROCEEDINGS. 243 



The occurrence of certain plants and insects in the highlands of the east 

 coast was due to elevation. 



Mr. Wm. T. Davis exhibited a number of specimens of the cicada Okana- 

 godes gracilis recently described in the Journal of the New York Ento- 

 mological Society from Utah and Arizona. Recently he had received two 

 additional males from Bagdad, San Bernardino Co., California, August 6, 

 1919 (Rchn and Hebard). Mr. Morgan Hebard, who collected the speci- 

 mens, reported that they were found on low plants, mid an arid environment. 

 He was attracted by the song, which he first thought was produced by an 

 Orthopterous insect. The cicadas ceased singing when he was still some dis- 

 tance from them, which made their final detection rather difficult. 



Meeting of April 6. 



A regular meeting of the New York Entomological Society was held at 

 8 P. M. on April 6, 1920, in the American Museum of Natural History, Presi- 

 dent L. B. Woodruff in the chair, with seventeen (17) members present. 



Dr. Frank H. Chittenden, Washington, D. C, was elected an active 

 member. 



Dr. \\'a!ther Horn's request for exchange was referred to the Librarian. 



Mr. Davis read letters from E. B. Williamson in Venezuela, Dr. W. T. 

 M. Forbes in Panama and R. P. Dow in California. 



Dr. Bequaert made some " Remarks on Dolichopodidae," in which he 

 pointed out first the characters of these small flies in venation, second basal 

 cell always united with discal cell, and the bend or kink in fourth vein ; also 

 their frequently being greenish metallic in color; and secondly the remarkable 

 variety in their male characters, as illustrated in Herman Loew's monograph 

 of 1864 (S. M. C, No. 171). He showed his own collection and that of Mr. 

 Burns, also a small European collection, pointing out the absence of striking 

 faunal differences, and the opportunity for further study, Mr. Burns' collec- 

 tion containing seven species new to the New Jersey List and one species new 

 to science. Passing to the habits, he said the adults were not found on flowers 

 or at light but by sweeping low meadows, on rocks in wet places, on moss 

 about springs and sometimes on the bark of trees. Of the larvae there was 

 much to learn ; Marchand had bred Argyra from larva: found in mud among 

 Tabanids ; all the larvae were carnivorous and cannibals, adding to the difficulty 

 of breeding them ; some are known to attack Scolytid larvae, A paper on 

 Diptera Danica IV by Lundbeck in 1912 contains useful data. 



Dr. Sturtcvant added some details indicating that the prey of the adults 

 is not always enclosed by the proboscis. 



Mr. Schaeffer, under the title " Donaciae of New York State." gave a 

 remarkable exhibition of minute information on this puzzling group. He 

 pointed out that in two especially plastic species, cincticoruis and subtilis, 

 the characters he had found constant in a very large material indicated more 

 species than were recognized in the last published synopsis. Some of these 



