THE ENTOMOLOGIST. 
Wor. XLIX.] NOVEMBER, 1916. (No. 642 
A NEW SOUTH AMERICAN PAPILIO. 
By Percy I. Latay. 
_¢ Papilio horrackt, sp. nov. 
d. Upper side—Fore-wing black, with strong bluish-black 
reflection except on apical area, which is sparsely scaled and slightly 
transparent; a discal grey-green band from lower discoidal to near 
inner margin, where it is produced towards base; fringes slightly 
spotted with crimson between nervules. Hind-wing black, with 
strong bluish-black reflection, a series of five carmine patches beyond 
cell, the lower four extending from cell to near outer margin, where 
they are slightly paler; the upper much shorter and near outer 
margin. These patches bordered inwardly with grey-green scaling ; 
a little greyish-green scaling within cell towards end; fringes carmine 
between nervules. 
Under side.—Fore-wing paler than above, bluish-black reflections 
not so pronounced, discal band dirty white, darker towards inner 
margin, and not so produced towards base. Hind-wing without 
bluish-black reflections excepting on inner margin; carmine patches 
as above, but more dull in colour and slightly suffused with black 
scaling ; two additional patches on outer margin below lower median 
nervule, the upper being the larger; outer two-thirds of cell and 
inner edge of carmine patches, particularly the two upper, suffused 
with buffish scaling. 
Hab.—French Guiana; St. Jean de Maroni. 
This most remarkable species is best placed between P. pan- 
thonus, Cram., and P. lysander, Cram., and is, I think, more 
neatly related to the former. The large extension of red patches 
of hind-wing at once serves to distinguish it from either of these 
species ; also the greenish-grey band of fore-wing is a character 
wanting in P. panthonus, while the band of P. lysander is ex- 
ceedingly ‘narrow above and does not touch cell, and in the 
new species the band is wider above than on inner margin and 
touches cell; also in 2. horracki the outer margin of hind-wing 
is not so produced as second median nervule.. 
This new species must be remarkably rare, as the Maroni 
district has been collected in for many years. Only one example 
was captured, fortunately in perfect condition, and it is now in 
the fine collection of Mlle. de Horrack of Paris. This remark- 
ENTOM.—NovEMBER, 1916. Y 
