278 proceedings: entomologicaiv society 



Notes and Exhibition of Specimens 



Mr. ScHWARZ gave an account of a recent visit which he and several 

 other entomologists had made to the Florida everglades and keys. He 

 described the topography and flora of the region, especially contrasting 

 the character of the everglade keys with the Florida Keys. He spoke 

 of the occurrence in semitropical Florida of the coleopterous genus 

 Dendr acinus (family Scolytidae). The type of this genus, D. glohosus 

 Eichoff, was described in 1868 from two specimens said to have come 

 from "North America," but the correctness of this locality has always 

 been doubted. However, during this visit to Florida Mr. H. S. Barber 

 found an undescribed species of the genus at Marathon (Key Vacas) 

 boring in the solid wood of Bourreria havaniensis. This species differs 

 greatly from D. globosus and the other species of the genus, and Mr. 

 Schwarz presented a description of it for publication in the proceedings. 



Mr. CusHMAN discussed the larva of the spider parasite, Polysphineta 

 texana Cresson, describing its method of maintaining its hold on its 

 host. 



Dr. Baker discussed the probable synonymy of Neotoxoptera violae 

 Theob. of Egypt with Rhopalosiphum violae Pergande of America on the 

 ground that forms similar to the former can be produced in greenhouses 

 in this country. Mr. Rohwer thought that the fact that a form of the 

 American species resembling the African form can be produced in green- 

 houses was no proof that the American and African forms are the same 

 species. He objected to the synonymizing of the two until further proof 

 of their identity is obtained. In support of his contention he cited the 

 case of the so-called Cladius pectinicornis , one of the rose-slugs, stating 

 that the American form, which has heretofore been considered as the 

 same as the European species, is specifically distinct. Mr. Heinrich 

 agreed with Mr. Rohwer, stating that in the Microlepidoptera American 

 species are being rapidly found distinct, so that the European names are 

 taken out of American literature. 



323D meeting 



The 323d regular meeting was held at the Cosmos Club on June 5, 

 1 91 9. President Sasscer presided and there were present twenty-four 

 members and six visitors. 



The program offered was as follows : 



R. H. Hutchinson: Experiments with steam disinfection in destroying 

 lice in clothing. Mr. Hutchinson prefaced his paper with some remarks 

 about the louse, showing lantern slides illustrating sexual characters, 

 eggs, hatching, and the effect of steam on eggs. Further slides were 

 then thrown on the screen showing field laundry units and a large 

 delousing station used at debarkation camps, the speaker explaining in 

 detail all the different processes and apparatus. 



Major Harry Plotz, U. S. Army, told of some of his experiences in 

 connection with this work in Bulgaria in the early part of the war. Dr. 

 Baker was interested in the presence, mentioned by Mr. Hutchinson, 

 of the peculiar yellow body in the nymphs of the louse and the fact that 



