480 ENTOMOLOGICAL NEWS. [DcC, '17 



Doings of Societies. 



The American Entomological Society. 



Meeting of June li, 1917, in the hall of the Academy of Natural 

 Sciences of Philadelphia. Dr. Henry Skinner, President, in the chair; 

 nine persons present. Mr. C. W. Frost was elected a member. 



The donations from Mr. Harry B. Weiss of specimens of 

 Diorymellus laevimargo Champ, and Mcgastigmus aciilcatus Swed. 

 and from Mr. Albert F. Swain of a collection of paratypes of Cali- 

 fornian aphids were announced. 



Orthoptera. — Mr. J. A. G. Rehn exhibited the Hebard collection 

 of North American Blattidae, containing all the known species, and 

 made interesting remarks on the history of the nomenclature and the 

 distribution and habits of the species. 



Odonata. — Dr. P. P. Calvert exhibited the type of Miocora pcraltica, 

 new genus, new species, from Costa Rica, described in Entomological 

 News for June, 1917, and spoke briefly of its habitat and its generic 

 differentials. He also exhibited two larval exuviae of Hagenius brevis- 

 tylus which he had found on stones below a dam, on the banks of 

 Darby Creek, above Heyville, Delaware County, Pennsylvania, June 

 18, 1916, and a female imago which he had taken on the bank of 

 Crum Creek near Castle Rock, Pennsylvania, June 23, 1916, and sug- 

 gested that members be on the lookout for this species of which there 

 was only one previous record of its occurrence in the vicinity of 

 Philadelphia, that of a nymph found in Fairmount Park in 1893, by 

 the late C. F. Seiss (Ent. News, V, p. 324). 



Lepidoptera. — Dr. H. Skinner exhibited the pupal skin of Megathy- 

 mus cofnqtti from which the insect, shown at a previous meeting, 

 emerged June 8th. It was sent from Venice, Florida. 



General. — Dr. P. P. Calvert exhibited some vials of alcoholic speci- 

 mens of Arthropods from Costa Rican bromeliads and commented on 

 them briefly, also parts of bull's horn thorn (Acacia spp.) and the 

 ants (Pseudomyrma spp.) which inhabit this plant, from the same 

 country. Referring to a course on the history of entomology which 

 he had just been giving during the closing academic year at the Uni- 

 versity of Pennsylvania, he named the following naturalists selected 

 for discussion in this course as having had great influence on the prog- 

 ress of entomology : Aristotle, Malpighi. Leeuwenhoek, Swammer- 

 dam, Redi, Reaumur, Roesel von Rosenhof, Ray, Linnaeus, Fabricius, 

 Latreille, Cuvier, Lamarck, Savigny, Darwin, Wallace, Haeckel, 

 Weismann and Lubbock; the time limits of the course prevented the 

 inclusion of others. — R. C. Williams, Jr., Recording Secretary. 



