MEMOIRS or THE NATIONAL ACADEMY OF SCIENCES. 251 



Fore wings with a lieav.v distiuct Mack line near the base, straight and ending on tlie median 

 vein: basal scalloped black line on tlie basal third of tlie wing. A black costal spot in front of 

 the discal mark, which is linear, black, curved, and distinctly defined. No line behind. Extra- 

 discal line sinuous, doubly scalloped, inclosing whitish gray scales. Submarginal shade some- 

 what recalling that of H. pulverca, but narrower and less scalloped, much dislocated on the first 

 median venule. Fringe coucolorous with the wing, with a fine black line at the base and with 

 linear venular 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 wings, 

 and the fringe of both wings is spotted with black. 



Expanse of wings, i 36 mm.; length of body, S 10 mm. 



This is a very distiuct, well-marked species, and with a submarginal blackish shade as in 

 H. pidrerea, but narrower and more dislocated. 



Geoyraphlcul distribution. — "Clifton, Bosque County, Tex., March 23, April 15 and 21" 

 (Belfrage); Texas, Arizona (French). 



Heteiocainpa cbapmani Grote. , 



Heierocampa cluipmani Grote, Boll. U. S. Geol. and Geogr Survey (Haydeu). vi, No. 1, p. 258, Feb. 11, 1891. 

 Kirby, Syii. Cat. Lep. Het., p. .564, 1892. 

 Neum. and Dyar, Trans. A.mer. Ent. Soc, xxi, p. 20.', June. 1891. 



I had, from Grote's description, regarded this as identical with. H. astarte, but since then Dr. 

 Thaxter Las kindly shown me his three specimens, which were those he lent Mr. Grote, and 

 wliich were his types. They were obtained at Appalachicola by Dr. Chapman. The species is 

 figured by Abbot in his manuscript volume of drawings in the library of tlie Boston Society of 

 Natural History. 



One $ , two 9 . Very similar to H. nstarte in style and ]>()sition of markings, and it may, when 

 we know the larva, be found to be only a variety of it, though <\\\\ie, a distinct one. It differs 

 from H. astarte as follows ; 



The bhick lines and the dusky shades and patches on the fore wings in H. astarte are in 

 H.chapmanl reddish brown, and the olive greenish shade is in H. rhapmani pale, almost whitish 

 ash, and 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 H. astarte. The two scallojied intradiscal lines as in 

 H. astarte, but reddish brown. The discal line is less curved than in H. astarte, and not black, 

 but deep reddish brown. Tlie three extradiscal scalloped lines just as in U. astarte, but dark 

 brown, not black. The submarginal oblique shade so distinct and black in H. astarte is in the 

 present form reddish brown, as is the submarginal 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 H. astarte, but subocherous or snufi'-brown; a median 

 shade as in H. astarte. the outer edge of the wing broadlj^ shaded with jiale ocherous brown, but 

 this shade is broader than in H. astarte. Beneath shaded as in 11. astarte, but the hue is 

 ocherous brown rather than dusky or blackish. Length of body, 9 22-23 mm.; expanse of 

 wings, 9 'm mm. 



It Will be seen that the difference in the two species or forms is in the color, and not in the 

 shape and position of the markings, but at first sight the two look quite different, and 

 piovisionally should be regarded as so; this is also the view of Grote and of Thaxter. Yet it is 

 very plain that H. obUqua, astarte, and chapmani have originated from a common ancestor. 



