78 Journal New York Entomological Society. [Voi. x. 



appears to be true, though not quite as I at first supposed. I had two 

 specimens, one exceedingly light and one so dark as to appear spe- 

 cifically distinct. These extremes are both figured. I began acquir- 

 ing material and soon had a long series, twelve fine specimens being 

 now before me. These show a gradation from the lighter to the dark- 

 est form, though the darkest is still considerably distinct from the next 

 in the series. Examination of the genitalia showed however that 

 throughout the series there is absolutely no variation, an interesting 

 corroboration of Professor Smith's contention that variations in the 

 genitalia will separate species, but not varieties of the same species, 

 however dissimilar the variety may be from the type. 



This study of the genitalia however disclosed the fact that thoracica 

 is not a variety of cineritia, as it has been described and listed, but is 

 a distinct species. This I am told has been corroborated by breeding, 

 the larval stages of the two being also distinct. 



The figures on the plate are from a woodcut, the insects having 

 first been photographed on the wood block. They may be consid- 

 ered authentic. Niipera is from a specimen carefully compared with 

 the type. Brucei is from the type itself Thoracica is from a specimen 

 in Mr. Doll's collection found with the type, labeled by Mr. Cramer 

 and agreeing absolutely with the type. Brillians, the new species 

 herewith described, is from the type. 



Calocampa brillians, sp. nov. (PI. X, Fig. 3.) 



Resembling cineritia and thoracica, but overcast with purplish and mahogany 

 shadows. Head and collar mahogany color. Thorax dark brown. Patagise, pearl 

 gray towards the base of primaries. Orbicular and reniform adjacent. The former 

 ringed with a geminate line, the outermost heavy, black. The reniform outlined 

 heavily in black at the lower inner curve, next to the orbicular. Centrally a pale 

 crescent, at the inner curve of which is a bright mahogany splotch, which is the be- 

 ginning of an orange- colored dash extending outwardly to a wave of the s. t. line 

 when it is sharply outlined by a black line outwardly and towards the lower margin 

 of the dash. The t. a. line is waved or dentate with second or geminate line carry- 

 ing one long outcurve towards the orbicular. T. p. line oblique, waved, inconspicuous. 

 S. t. line with a sharp notch near apex, then slightly waved, oblique, conspicuous 

 against the outer border of pearly gray. The s. t. line carries the black dash already 

 mentioned. The costa is black with three white dots between the reniform region 

 and the junction of the s. t. line. Above the orbicular and reniform and as far out- 

 ward as the s. t. line the area is mahogany brown. The base is pearly gray and the 

 median space the same, overcast with smoke. Secondaries, concolorous, mahogany 

 brown, with fringes lighter. Expands, 45 mm. 



Habitat : Maine, New Hampshire. 



