4 Journal New York Entomological Society. [Voi. xxiii. 



The author has forty specimens of this species in his collection 

 and has seen many more, and they show hardly any variation. In 

 fresh specimens the dorsal part of the abdomen at base and the three 

 last segments are often pruinose, leaving four intermediate segments 

 dark in color. The following measurements are taken from a male 

 from New Jersey and a female from Staten Island, N. Y. 



Male, Mm. Female. Mm. 



Length of body 41 40 



Length of fore wing ; 53 52 



Expanse of wings 117 115 



Cicada marginata Say. 



This species was described from Missouri by Thomas Say in 

 1825 and was called marginata for the reason that the abdominal 

 segments are yellowish on their posterior margins. The length of the 

 insect is as he says " more than two inches and a quarter to the tip of 

 the hemelytra," but it is not much more. The W-mark on the fore 

 wings is absent or nearly so in this species, and the costal margin is 

 somewhat bent near its central portion instead of being evenly rounded 

 as in Cicada resJi. It is also smaller and of a lighter green color than 

 the olivaceous aiiletes. Uhler in his Preliminary Survey of the Cica- 

 didse of the United States, Antilles and Mexico, Trans. Maryl. Acad. 

 Sci., 1892, says that the " W-shaped mark near the tip of the wing- 

 covers " is sometimes absent in Cicada tibicen and that this is also the 

 case "most commonly of all, with C. aulctes Germ, (marginata Say)," 

 He had probably been examining true marginata when he wrote 

 this. The male genitalia are very different from auletes. The supra- 

 anal plate is narrower and is without the three dorsal terminal points 

 present in that species. Further the uncus when viewed in profile is 

 narrowed to the rounded tip and not widened as in auletes. When 

 viewed from behind, that is at full face, the uncus ends in a rounded 

 point, whereas in auletes the end is notched. 



As was stated in connection with the remarks on C. auletes and 

 C. grossa the figure in Entomological News, Vol. XVIII, PI. 3 is that 

 of the genitalia of Cicada auletes and not of Cicada marginata as 

 there stated. 



The following specimens are in the author's collection : 



Cincinnati, Ohio, Aug. 7, 1911, female (Chas. Dury). 



