88 Journal New York Entomological Society [Voi. x. 



ochre-colored costal stripe beyond transverse posterior band is limited 

 to the extreme edge of costa only, never reaching apex. Often the 

 transverse posterior band is only rudimentary or is lacking altogether. 

 The central longitudinal stripe, never extending beyond the costal 

 stripe, inclines to send off a short submedian streak, thus getting 

 forked at the end. Interior margin bordered by a dull ochre 

 stripe. 



Secondaries rather bright red. Costal region blackish, expanding 

 at apex to a broad black band reaching to inner angle. The band is- 

 variable in its width and sometimes the black extends beyond the 

 rather prominent discal spot, leaving only a limited red space near 

 root of wing. 



The more produced the stripes on primaries, the more reduced is 

 the marginal band on secondaries, and with those individuals where 

 the bands on primaries are only represented by short streaks, the 

 black on hind wings extends from the costal margin and encloses the 

 discal spot, leaving less than a third of the wing red. 



The size of the more typical individuals is in both sexes rather con- 

 stant, varying from 3.7 to 3.5 cm. The aberrative forms { S) are in 

 general behind this size, never expanding more than 3.5 cm.; 

 dwarfed specimens of both sexes 2.7 ( <? <? ) and 3.0 (99) cm. re- 

 spectively. 



This moth has been by no means unknown. Several specimens 

 were collected by Mrs. Slosson in Florida. Perhaps all the 9 9 

 obtained from the South have been referred to A. vittata Fabr. , 

 while the males, according to their appearance, were considered as 

 varieties of nais, plialerata or vittata.'^ 



Walker's description of y^/>(Z///n7> radians 9 agrees with figures 20 

 and 21, and Butler's description of Arclia plialcraia var. incompleta $ ^ 

 agrees with figures 13, 14 and 15. 



Several of the first imagines obtained with some of the larv?e were 



* Besides the seven specimens which Mr. Seifert kindly gave rae, the U. S. 

 National Museum has eight specimens of a brood from Archer, Florida, bred by A. 

 Koebele (Dept. Agr., 2587), one female bred by Riley in Missouri (No. 126 L), 

 and two females captured in Washington, D. C, also a female with thinly scaled 

 hind wings, from Miami, Florida. This form is by far nearest to A. phalerata Harr., 

 and differs therefrom only in the greater extension of the black markings. It may 

 not be possible to determine whether it was radians or decorata that served Fabrician 

 as the basis of his diagnosis of vittata, but it seems nearly certain that it is Walker's. 

 radians in the British Museum. — Harrison G. Dyar. 



