96 Journal New York Entomological Society, t'^'o'- xxviii 



wide, basal areole oblong, the radial areola occupying more than one- 

 half the length of the wing-cover, the second ulnar areole short, wide, 

 almost triangular; the apical areoles narrow, and the third, fourth, 

 and sixth of equal length, with their inner tip triangular, while the 

 inner end of the second, fifth, and seventh is truncated; wings narrow, 

 not reaching as far as the tip of the discoidal areole of the hemelytra, 

 with the anal-flaps broadly rounded, and separated by a deep emar- 

 gination from the other member of the wing. Anal segment of both 

 sexes narrow and compressed, acutely tapering, with the ovipositor 

 of the female almost enclosed therein. Sonorous valves of the male 

 rudimentary, inconspicuous." 



To the above description may be added that owing to the great 

 length of the radial cell the node is much nearer the end of the fore 

 wing than in any other genus of North American Cicadas. In Platy- 

 pedia, as in CUdophleps, Okanagana, Okanagodcs and Tibicinoides, 

 the metanotum is conspicuous behind the mesonotum, and the uncus 

 cannot be withdrawn into the abdomen. 



In August, 1888, Uhler described Platypcdia minor \n'Eniomo\og\c?i 

 Americana, which made the third species of the genus. Then fol- 

 lowed three more, namely apcrta, intermedia and ampliata, described 

 by Mr. Edward P. Van Duzee in 1915 in the Journal of the N. Y. 

 Entomological Society. 



In his Synonymic Catalogue of Homoptera, Part i, Cicadidae, 1906, 

 W. L. Distant designated arcolota as the type of the genus and places 

 putnami as a synonym of that "species. He recognizes minor as a 

 valid species. In the Catalogue of the Hemiptera of America North 

 of Mexico, 1917, Mr. Van Duzee lists the six species mentioned above, 

 and gives arcolata as the logotype of the genus. 



As far as known no species of Platypodia occur east of the Missis- 

 sippi River, but from western Nebraska and Colorado westward to 

 the Pacific, and southward to the Rio Grande there are at least ten 

 species, and two species in the allied genus Neoplatypcdia. In the 

 Annals of the Entomological Society of America, Vol. XII, pp. 1-12, 

 1919, Dr. Edwin C. Van Dyke has an article on The Distribution of 

 Insects in Western North America, and an examination of the locali- 

 ties given for several species of Cicadas mentioned in this paper, sug- 

 gests that some are confined to the faunal areas defined in the article 



