proceedings: entomological society 417 



planted to grain were far apart the infestation would be considerably- 

 reduced. Mr. Gahan thought that the fact that the species is already 

 widely distributed in both mountain and plains regions indicates con- 

 siderable ability to spread Mr. Walton suggested wind as a means 

 of spreading. Mr. RohwER stated it as his experience that sawflies 

 seek shelter in high winds, and also that the species is perhaps more 

 widely spread than outlined by Mr. Gahan, inasmuch as he has a larva 

 from near Parkersburg, West Virginia, that is probably this species. 



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 contrast- 

 ing the character of the everglades keys with the Florida keys. He 

 spoke of the occurrence in semi-tropical Florida of the Coleopterous 

 genus Dendrosinus (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 southern Florida, 

 Mr. H. S. Barber discovered an undescribed species of this genus at 

 Marathon (Key Vacas) boring in the solid wood of Bourreria havaniensis. 

 This species differs greatly from glohosus, and the other species of the 

 genus, and Mr. Schwarz presented a description of it for publication in 

 the proceedings of the Society. 



Mr. CuSHMAN discussed the larva of the spider parasite, Polysphincta 

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

 host. 



Dr. Baker expressed the opinion that Neotoxoptera violae Theo., 

 described from Egypt, is an aberrant form of Rhopalosiphum violae 

 Pergande of America since similar forms are obtainable from Pergandes 

 species in greenhouses here. Mr. RohwER thought that the fact that 

 a form of the American species resembling the African form can be 

 produced in the greenhouse 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 sawflies, 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 that have formerly been 

 considered the same as European species are rapidly being found dis- 

 tinct, and the European names are being taken out of American litera- 

 ture. 



