EUPLOEINAE : ANOSIA .PLEXIPPUS. 



723 



broadly bordered witli black and this edged narrowly and inconspicnou.'sly with white 

 scale.s; border as on tlie upper surface, excepting that tlie white spots are all large, 

 round and conspicuous as on tlie under surface of the fore wings; there is also a white 

 spot at the extreme upper base of the subcostal nervure and another smaller one be- 

 tween the base of the median and submedian nervures; tlie fringe as upon the upper 

 surface. 



Al)domen rich darlc purplisli brown, the last five or six segments witli a slight 

 posterior edging of white scales on the sides above; beneath a broken powdery medio- 

 ventral line of buft' white on the basal half, and beyond three or four median patches of 

 biUr white; sides with a slender continuous line of buft" white and the last tliree or four 

 segments with some additional paler rtcckings, on the posterior edges of the segments. 

 Appendages of uiale (33 : 23, 24) ; upper organ with the liook directed downward 

 more tlian liackwani, nearly as long as the centrum, equal, half as long again as liroad 

 and broadly rounded at the tip. Clasps with the posterior border at ai)out a right 

 angle with the inferior, but with the angle rounded oft'*; tiie upper tooth is triangular, 

 about as long as broad, pointed! ; the finger of the interior ridge is directed ijack- 

 ward and a very little downward! , and is nearly equal, a little compressed, slightly 

 twisted, rounded at the tip, l)ent toward that of the opposite clasp, but close to the 

 tip turned slightly in a reverse direction ; its apical half is transversely wrinkled§. 

 The males also possess an extensile pencil of hairs (61: 49, 59) on each side of the 

 last abdominal segment, which spread when the pencil is fully extended ; each hair 

 is straight, simple, gently clubbed at the tip and .02 mm. in diameter. 



Measurements in niilliuietres 

 Length of tongue. 16.5 nun. 



Length of fore wing 



antennae 



hind tibiae and tarsi . . , 

 fore tibiae and tarsi... 



Lengtli of claws (not included in the leg measurements above) , 2 mm. ; of blister 

 on hind wings of male, 2.0 mm. 



Aberrations and variations. A. p. fumosus {Dan. archippus var.fumosus Hulst, Ent. 

 am., ii : 182, 1886) "Diflers from the type form in having the whole of the surface of 

 the wings which ordinarily is bright fulvous, of a deep, sooty brown color." This 

 form is also referred to as exhibited at meetings of the Brooklyn entomological 

 society (Ent. am., i : 140, 159, 180). 



Butler describes the Jamaican form, also occurring in Venezuela, with immaculate 

 black border to hind wings as a distinct species. According to Godman and Salvin, 

 the form prevalent in the northern part of South America is one in which the spots 

 in the apical i)ortion of the fore wings are purer white than in North American exam- 

 ples. Jenner Weir writes me that all the specimens taken in England which he has 

 seen have the five large subapical spots of the fore wing, i. e., those found at a little 

 less than midway between the tip of the cell and the tip of the wing, tawny, and this 



* In southern specimens — Lagoa Santa, 

 Venezuela, Gautcniala, Hayti — it is at more 

 than a right angle and the clasp is nuich nar- 

 rower at the tip than in the New England spe- 

 cimens. 



t In southern specimens, as above, it is about 

 twice as long af? broad. 



t In sonthel'u specimens, considerably down- 

 ward. 



{ In specimens from Ljvgoa Santa the apex 

 is obscurely bifid. 



Specimens from Hayti and Venezuela — in 

 which also fhe cell of the hind wing approaches 



the hinder margin more closely than usual — 

 have the posterior edge of the clasp-like eighth 

 abdominal segment less considerably excised, 

 and the upper angle less produced to an 

 appendage, than obtains in New England 

 specimens. This is. however, not true of a 

 specimen from Lagoa Santa in Brazil where 

 the cell is even longer, nor in Guatemalan spec- 

 imens where the cell is similar to that of the 

 New England butterflies. The Guatemalan 

 insects, in these two particulars, thus resemble 

 New England types rather than those of 

 warmer regions. 



