XY:MPIIALTNAE : BASILARCIIIA AllCIIIPPUS. 



269 



interiorly with indistinct -white spots, tliemselves margined interiorly with black; 

 there is also occasionally a faint, whitish spot at the divarication of the costal and 

 subcostal nervures of the hind wintjs ; fringe of ))oth -svings as above. 



Abdomen blackish, annulated beneatli, at the segment tips, Avith white ami furnished 

 Avith a narrow, lateral lino of white, broadening on the last segment. Male appendages 

 (33 : 11, 12) : upper 07-gan ; hook straight on its l)asal narrowing lialf, beyond curving 

 considerably and increasing slightly in height hal f way to tlie tip, then narrowing I'apidly 

 by the slopingof the upi)er edge only, the apex more attenuated than in the otlier species. 

 Clasps dittering mucli more from the other species than these from each other, being 

 two and alialf times longer than broad, from beyond the inferior prominence tapering 

 rapidly and pretty regularly witli l)roadly sinuous margins, the apex bearing a few, 

 .small, unequal teeth, one of tliem prolonged into a long, slender, slightly tapering, 

 pointed process, curving very strongly downward and slightly inward, half as long as 

 the breadth of the clasp ; interior finger very stout and tapering on the basal half, 

 directed upward and backward; beyond free, nearly er|ual, slightly curved, directed 

 upward, beset with minute prickles, rounded at the tip and extending by Iialf its length 

 above the clasp, which lias but little expansion of the upper c(]ge to guard it. 



Described from 1$ 5 ? . 



Suffused variety. B. a. pseudodorippt's (ab. lisenfJodnrrppus Streck. Cat. Amer. 

 Macrolep. , 143 ; Can. ent. , iv : 21G) . In the collection of Mr. T. L. Mead, noAv owned by 

 Dr. W. J. Holland, is a suffused specimen of this butterfly, which lacks all markings above 

 excepting the dark veins and borders, and, on the fore wings, a slight indication of the 

 preapical triangle, lilurred and diminished in size; the only Avhite marks are on the 

 outer border, in the lowest subcostal interspace and below it, where on the fore wings 

 they are large and blurred ; and on the hind wings blurred also, but of the natural size. 

 The under surface of the wings is similar to the upper, but the apex of the fore wings 

 is paler and there is a faint indication of the white spots which normally border the 

 transverse black stripe of the hind wings; on the same wings, the white markings of 

 the margins are peculiar, for they border interiorly the whole of the black margin ; on 

 the fore wings they border nearly the Avhole margin in the same way and form rather 

 large powdery lunules; the outer line of white of the normal wing is faintly marked as 

 a nearly continuous line. It was taken in the Catskills. 



Mr. Strecker says he has an example from Holyoke. Mass. (Chase) "which differs 

 from the above in the total obsolescence of ail white lunules in margins of both siir- 

 faces ; . . . the mesial line of secondaries is very faintly visible ... It was a male." 



For notice of hybrids between this species and the others, see them. 



Egg (64: 13). Surface smooth, covered with deep cells, the floor of which is con- 

 cave, the walls very thin and elevated, forming quite regular hexagons, the vertical sides 

 of which are usually longer than the others, the longitudinal diameter of one of the cells 

 in the middle of the sides being .15 mm., and the transverse diameter. .12 mm. ; the 

 cells are smaller at the very bottom of the ef^s^; from each angle of the walls projects 

 an erect, delicate, tapering filament or spine, .1 mm. long, .0(17 mm. broad at base, 

 tapering, truncate at tip; this amature covers every part of the exposed portion of 

 the egg, excepting the micropyle. to such a degree that it would seem as if it would 

 interfere below with the proper attachment of the eix.g. Micropyle (67 : 0) .127 mm. in 

 diameter; and the irregular cells composing it from .0128 to .017 mm. in diameter, the 

 smaller cells being nearest the centre. Color when laid of a deep green, exactly that 

 of the upper surface of the leaf on which it is placed ; aftervvards it becomes translu- 

 cent; spines pellucid; height (not including spines), .88 mm. ; breadth, 1.04 mm. 



