OF WASHINGTON. 339 



NOVEMBER 3, 1898. 



The 138th regular meeting was held at the residence of Mr. E. 

 A. Schwarz, 230 New Jersey Avenue N.W. Vice-President 

 Dr. Gill was in the chair, and Messrs. Schwarz, Benton, Mar- 

 latt, Dyar, Busck, Ulke, Caudell, Pollard, Uhler, Heidemann, 

 Ash mead, Howard, and Vaughn were also present. The minutes 

 of the last meeting were read and approved, and the Correspond 

 ing Secretary submitted his usual report. Messrs. F. E. Chapin 

 and A. N. Caudell were elected active members. 



- -"""*"! 



Under the head of "Exhibition of Specimens and Short 

 Notes," Mr. Heidemann showed a remarkable Tingitid from the 

 Santa Rita Mountains, Arizona, collected by Mr. Schwarz, which 

 is identical with a species described from Panama, by Champion, 

 as Dichocysta pictipes. He also showed a specimen of Doli- 

 chocysta venusta, in both the long- winged and short- winged 

 form ; the former from Montana, and the latter from San Diego, 

 Texas. He also showed a specimen of Jalisus multispinus 

 Ashm. which has been collected at the District of Columbia, and 

 commented at length upon its systematic position. Some discus 

 sion ensued as to the relationship of Jalisus and allied genera by 

 Messrs. Ashmead and Uhler. 



Mr. Schwarz exhibited a small brightly colored moth of the 

 family Pyromorphidas, and a Lampyrid beetle (Lycus fernandezi) 

 which almost precisely resembled the moth, both from southern 

 Arizona. He stated that the apparent mimicry is so exact that 

 when flying together the insects cannot be distinguished. They 

 fly together in very considerable numbers, about every sixth speci 

 men being a beetle. He thinks that the beetles are themselves 

 deceived by the appearance of the moths, and think that they are 

 flying with their brothers and sisters. Apropos to these speci 

 mens, Dr. Dyar stated that while the moth exhibited was a Pyro- 

 morphid, the one showed a year ago by Mr. Schwarz, as resem 

 bling this same beetle, was an Arctiid ; he further said that in the 

 same general region there is a Syntomeid which partakes of the 

 same resemblance, bringing about a strange complication of the 

 mimetic relationship. Mr. Caudell said that at Stillwater, Ok 

 lahoma, he had occasionally seen a Lampyrid beetle similar to 

 the one shown bv Mr. Schwarz flying in large numbers on the 



