Vol. XXvi ] ENTOMOLOGICAL NEWS 6j 



The two females described by Kellicott (1899) are, following his 

 order, "(b) orange and bronze black" = a hetcrochromatic female as 

 described by Calvert (1893), and "(a) black and green (pruinose)" = 

 an aged homoeo- or heterochromatic female. 



Williamson (1900) recognized a "black" and an "orange" female. 

 As the black females are said to have "postocular spots connected or 

 not," it seems likely that they included advanced individuals of both 

 the homoeochromatic (i. e., postocular spots not connected) and the 

 heterochromatic (i. e., spots connected) forms. His orange females 

 are evidently heterochromatic forms like those of Calvert (1893) and 

 of Kellicott (1899), but he perceived and recorded that "this form 

 becomes entirely pruinose." 



Ris (1903) regarded the females as showing "a curious polymor- 

 phism." His expression "In some teneral females of the green form 

 the upper side of segments 8 and 9 is largely blue" refers to homoeo- 

 chromatic females of verticalis or of kcllicotti, more probably the for- 

 mer. While he does not mention the earliest stage of heterochromatic 

 females (/. e., those with blue on abdominal segments 8 and 9), he 

 recognizes the dimorphism (or dichromatism) of green and orange 

 females, although his "fully adult" individuals of the latter are not the 

 most fully altered in their colors. 



Needham (1903, pi. 17, fig. 5) has reprinted his figure of 1898. 



Two figures by Howard (1903, pi. xlvii, figs. 2, 4) seem to be refer- 

 able to pruinose females of indeterminable form. 



Walker (1908) briefly summarizes "two color varieties" of females, 

 "the 'black female,' colored like the male when young," which implies 

 our homoeochromatic form, and the "orange female," a heterochro- 

 matic form of unspecified age. He adds, "Both forms become prui- 

 nose when old, appearing then as though covered with a dull bluish 

 dust . . . The latter [black female] seems to become pruinose 

 very soon after maturity." The last-quoted sentence probably explains 

 why so relatively few homoeochromatic females' with blue on seg- 

 ments 8 and 9 have been recorded in the literature, and why the true 

 characters and relations of this form have not been more largely 

 recognized. 



Muttkowski's descriptions of 1908 apply to the same conditions noted 

 by Kellicott (1899^. 



If my interpretation of specimens and of descriptions In- 

 correct, I must assume one of three possibilities from Miss 

 Lyon's work. T. That she overlooked the presence of blur 

 with the lateral black stripes on abdominal segments 8 and <; 

 of her youngest orange females, or 2, that the blue on tb 

 segments disappeared within 48 hours, or 3, that some orange 



