288 



LEPIDOPTERA. 



N. B. — In estimating the alar expanse of my Lepidoptera, it should 

 be observed that I set my specimens with the wings well drawn for- 

 ward, which of course slightly diminishes the expanse. The more 

 accurate method is to give the length of the fore-wing ; but as Lepi- 

 dopterists generally have not yet adopted this rule, I have, for the 

 sake of uniformity, followed the usual practice. 



Halesidota (lophocampa) Antiphola, n. sp. The imago of 

 this species is utterly undistinguishable from that of H. tessellaris, Sm- 

 Abb. & Harr. though the larva is very different, and occurs on oak, 

 basswood, etc., but never on hickory ; while that of H. tessellaris is 

 peculiar to the buttonwood or sycamore. I have now before me four 

 specimens of tessellaris (35,1?) and two of Antiphola (13, 1 ? ), both 

 species carefully bred by myself in separate cages in 1862-3, for 

 the express purpose of testing their identity. The former came out 

 June 22 and 28 and July 8 and 21, and the latter, July 6 and 10. I 

 have also before me six s-pecimens o{ Antiphola (3 3,39) bred by 

 myself from the oak in 1858-61, when I had never attempted tO' 

 breed tessellaris. There is some considerable variation, especially in 

 the shape of the wing-bands, in individuals of both species ; but on the 

 closest scrutiny I can detect no variation in one which does not also- 

 occur in the other species. For example, in the front wing, — 1st. 

 The terminal wing-band is confluent in its middle, in a single point,^ 

 with the subterminal wing-band, (1 tessellaris and one wing only of 

 another specimen, and 2 ^«<ip7;o/a.) 2d. The subterminal wing-band 

 is widely interrupted in its middle, with or without an isolated round- 

 ish spot of the same color as the wing-band in the interruption, (1 

 tessellaris, 4 Antiphola.) 3d. The short band, or semifascia, on the 

 middle of the costa, which is normally composed of one roundish or 

 squarish costal spot, and two long and narrow sub-costal spots, all 

 three contiguous, has all these three spots separated by a distinct 

 interval, (1 tessellaris, 1 Antiphola) or has only two of these spots 

 separated by a distinct interval, (1 tessellaris, 2 Antiphola.) 4th. 

 The fourth band, counting from the tip of the wing, instead of hav- 

 ing its sides sub-parallel, is resolved into a costal roundish or squarish 

 spot, which touches at a single point the remaining part of the band, 

 (3 tessellaris, 1 Antiphola.) 5th. The fifth or basal band, which is 

 normally composed of two roundish or squarish costal spots, separated 

 from each other by a wide interval, and touching at a single point, 

 or widely confluent with, a much larger postcostal or anal spot, has 

 one or both of the costal spots separated distinctly from the large 

 postcostal spot, (1 tessellaris, 4 Antiphola.) 6th. The shortest space 

 between the fourth and fifth bands varies in tessellaris from .07 to .12 

 inch, and in Antiphola from .02 ini a very small S to .12 inch. 



