240 ENTOMOLOGICAL NEWS. [Oct., 'lO 



ters of chief use in separating them, as well as their respective areas 

 of distribution and some of the questions of synonymy involved. The 

 results of his work have been reached after examining over eight 

 hundred specimens of the genus. The distributions were shown by 

 means of a blackboard sketch and their habitats by lantern slides. 



General. Mr. Cresson exhibited a copy of Say's "American Ento- 

 mology," his first attempt, published in 1817, containing six plates. 

 There is only one other copy known. The regular edition of this work 

 is dated 1824. Also a copy of Say's "Descriptions of new species of 

 North American Insects," most of which had previously been pub- 

 lished in the Disseminator. 



Meeting of April 24, igig, in the same place; ten persons present. 

 President Dr. Skinner presiding. 



Mr. W. J. Coxey, of Camden, New Jersey, was elected a member. 



Orthoptera. Mr. Rehn made some remarks, illustrated by speci- 

 mens and a map, on the distribution of certain species and races of 

 the genera Mestobregma and Metator. The effectiveness of the Rocky 

 Mountains as a barrier in controlling the distribution of insects was 

 discussed. 



Diptera. Mr. Geo. M. Greene recorded seeing a specimen of Calli- 

 ccra johnsoni Hunter flying in West Fairmount Park, Philadelphia, in 

 the morning of April 21 St. GEO. M. GREENE, Recording Secretary. 



Entomological Section, Academy of Natural Sciences of 



Philadelphia. 



Meeting of March 27, 1919, nine persons present; in the absence of 

 the Director and Vice-Director Dr. Skinner presided. 



W. J. Coxey, of Camden, New Jersey, and R. L. Haines, of Moores- 

 town, New Jersey, were elected member and contributor respectively. 



Lepidoptera. Mr. West exhibited the larvae of Catocala rcticta 

 Wlk. from Philadelphia, VI-3O-'i3, and C. aspasia Strcck. from Phila- 

 delphia, VI-2i-'i3. Dr. Skinner remarked on the genus saying many 

 people had been interested in it and had bred the species and lately 

 the interest has been renewed by the memoir published by the Amer- 

 ican Museum of Natural History; he expects that the various forms 

 will finally be placed in the near future. Dr. Skinner exhibited I'yra- 

 ineis carve LIubn. and the aberration iimclleri Letch., the latter col- 

 lected at Los Angeles, California, VII-6-'i3, by V. Duran ; also an 

 aberration of Aryynnis inyriiia Cram, from Glenside, Pennsylvania, 

 and a peculiar 9 of Colius curydicc Boisd. from Topango Canyon. 

 Los Angeles County, California, VIII-6-'i4, collected by V. Duran. 



General. Mr. Rehn exhibited the differences between the German 

 Zeiss binocular microscope (duplicated in America by the Bausch and 

 Lomb Co.) and the American Spencer, saying the latter is the more 

 satisfactory and far superior to the other. GKO. M. GKKKXK. Recorder. 



