MEMOIHS OF THE l^ATIONAL ACADEMY OF SCIEi^CES. 
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Fore wings witli a heavy distinct black line near the base, straight and ending on the median 
vein; basal scalloped black line on the basal third of the wing. A black costal spot in front of 
the discal mark, which is linear, black, curved, and distinctly defined, j^fo line behind. Extra- 
discal line siinious, doubly scalloped, inclosing whitish gray scales. Subinarginal shade some- 
what recalling that of JT. imherea^ but narrower and less scalloped, nuich dislocated on the first 
median venule. Fringe concolorons with the wing, with a fine black line at the base and with 
linear vemilar spots. 
Hind wings white, with a black line at the base of the fringe and with dark venular spots. 
Underneath, both wings are white, a little sordid on the costal region of both pairs of vings, 
and the fringe of both wings is spotted with black. 
Expanse of wings, $ 36 mm.; length of body, $ 16 mm. 
This is a. very distinct, Avell-marked species, and with a submarginal blackish shade as in 
H, pulverea, but narrower and more dislocated. 
Geograjyhieal disiribiiUon, — “Clifton, Bosque County, Tex., March 23, April 15 and 21” 
(Belfrage); Texas, Arizona (French). 
Heterocampa chapmaiii Grote. 
Heterocampa cliapmani Grote, Bull. U. S. Geol. aud Geogr. Survey (Hayden), vi, No. 1, p. 258, Feb. 11, 1891, 
Kirby, Syn. Cat. Lep. Het., p. 564, 1892. 
Neum. aud Dyar, Traus. Amer. Ent. Soc., xxi, 2 >. 205, June, 1894. 
I had, from Grote’s description, regarded this as identical with S', astarte^ but since then Dr. 
Tbaxter has kindly shown me his three specimens, which were those he lent Mr. Grote, and 
which were his types. They were obtained at Ajiiialachicola by Dr. Chapman. The species is 
figured by Abbot in his manuscript volume of drawings in the library of the Boston Society of 
Natural History. 
One $ , two 9 . Very similar to H. astarte in style and position of markings, and it may, when 
we know the larva, be found to be only a variety of it, though quite a distinct one. It difters 
from H. astarte as follows; 
The black lines and the dusky shades and patches on the fore wings in H. astarte are in 
H, cliapmani reddish brown, and the olive greenish shade is in H, cliapmani pale, almost whitish 
ash, aud on the scutellar region of the thorax reddish brown instead of dusky. 
Fore wings with the basal line indistinct, reddish brown; no distinct dark, curved, black line 
on the internal edge of wing as there is in JT. astarte. The two scalloped intradiscal lines as in 
77. astarte^ but reddish brown. The discal line is less curved than in 77. astarte^ and not black, 
but deep reddish brown. The three extradiscal scalloi>ed lines just as in 77. astarte^ but dark 
brown, not black. The submarginal oblique shade so distinct and black in 11. astarte is in the 
])resent form reddish brown, as is the subinarginal scalloped line, and the scallops are within 
filled in with spots of reddish brown; the dark spots on the fringe are reddish. 
Hind wings not white at the base as in 77. astarte., but subocherous or snuff-brown; a median 
shade as in H. astarte^ the outer edge of the wing broadly shaded with jiale otiherous brown, but 
this shade is broader than in 77. astarte. Beneath shaded as in 77. astarte^ but the hue is 
bcherous brown rather than dusky or blackish. Length of body, 9 22-23 mm.; expanse of 
wings, 9 55 mm. 
It will be seen that the difference in the two species or forms is in the color, aud not in the 
shape and position of the markings, but at first sight the two look quite different, and 
provisionally should be regarded as so; this is also the view of Grote and of Thaxter. Yet it is 
very plain that H. obliqua, astarte^ aud ehapmani have originated from a common ancestor. 
