110 ENTOMOLOGICAL NEWS. [April, 



TACHYRIS ILAIRE n. var. NEUMOEGENII. 



By Dr. HENRY SKINNER. 



(See plate iv.) 



The species T. ilaire is one of our larger butterflies, and is 

 found in Florida, Texas and Arizona. It is quite a variable 

 species, and our Florida specimens differ materially from those 

 found in the West Indies, South and Central America. Mv 



j 



attention was called to this difference by Mr. B. Neumoegen 

 whose collection contains a fine series of specimens from the 

 Indian River, Florida, and those of other localities. Mr. Neu- 

 moegen has sent me four females for study and inspection, and 

 these I have before me. Three are from the Indian River, Fla., 

 and one is from Arizona. In the Indian River specimens, the 

 inferiors above are lemon-yellow and the superiors white, with 

 the tips and basal areas grayish black. One specimen has a bor- 

 der of this darker color on the superiors. The Arizona specimen 

 has quite a wide dark border to all the wings. The wings 

 beneath are white with the bases of the superiors rich orange. 

 The males are entirely white, and those from the Indian River, that 

 1 have, show no dark tip to the superiors, while the South Amer- 

 ican and Central American specimens have a marked black tip. 

 The males beneath are white and only show traces of the orange. 

 The Florida males are more of a cream color, while the South 

 American males are more of a dead white. The males and 

 females figured are from the Indian River, Fla., and for this form 

 I propose the varietal name neumoegenii. There are four Cuban 

 specimens in the coll. of the American Entomological Society. 

 The females of these have a black border to all four wings; that 

 of the inferiors not being nearly so heavy as on the superior wings. 

 Dr. Staudinger in his " Exotische SchmetterHnge," figures this 

 species, and the %> has the black tip on the apices of the superiors 

 and the 9 has a wide black border on both the superior and in- 

 ferior wings. This I take to be the typical form. 



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THE BOLD ROBBER FLY. 



By S. F. AARON. 



Among insects of the order called Diptera, the two-winged flies, 

 to which the mosquito, gnat, horse-fly, common house-fly, etc., 

 belong, is particularly noted for its extremes in insect character- 



