ARGYNNIS. By Dr. Ta. Leamann. 427 
tion. The inner half pale buff, yellowish-brown, fuscous-grey to cinnamon-brown, mottled with paler tints. 
The short white costal streak of the g3 is enlarged in the pale-coloured 99 to a narrow median band of 
whitish-purple reaching the inner margin, and accompanied proximally as far as the median vein by a dark 
narrow fascia, distally by a broader and somewhat darker band with 5 pale, dark-edged ocelli. Between 
this and the pale greyish-brown termen a narrow and strongly dentate, buff submarginal band, intersec- 
ted in a most characteristic manner by the pale silvery white longitudinal streak which we also find in 
the §3, and which is continued toward the base by another, paler, elongate triangular spot within the 
subbasal band. Occasionally we find in the basal area also a few obsolete dark dots. Fringe whitish, on 
the nervules black. The 99 with dark brown under surface present a very different appearance, and if one 
compares the most extreme dark specimens with the lightest, one might easily take them for two different 
species. Specimens taken at Ushuaia (Fireland) in November and December are on the whole rather smaller 
than the more northern specimens from Puntas Arenas, measuring only 1,25’ as against 1,8’ in the latter; 
the smaller specimens ($3) are above more dull brown, with the under surface of the hindwings dark violet- 
brown. One 2 from Puerto Toro (Navarin Island, February 1906) is likewise quite dark. A 3 captured 
by Dr. Ontry on the Rio Grande (Kast-Fireland) has the underside of the hindwings as well as the apex 
of the forewing quite dark, dull brown-grey, differing greatly from the violet-brown colouring of all other gg 
of that region; all these specimens are another proof of the variability of the species. — An Argynnis 
larva found by Dr. MicHarseENn in Fall 1892 at Puntas Arenas probably belonged to this species; in length 
it measured 1,2’’, its colour was fuscous-black, underneath pale brownish; above with 4 rows of spines 
densely covered with brownish bristles, those on the first segment longest, on the second 4 mm, on the 
remaining ones 2—21,4 mm in length; it most resembles the larva of A. aglaja, but has the spines longer, 
with stiffer and longer bristles. Head glossy black, covered with thin hair. Prof. Bure gives in ,,Anales de la 
Sociedad Cientifica de Argentina a synopsis of cytheris Drury and dexamene Bsd. which he treats as two 
separate species, without, however, entering into further detail. From the imperfect description of Bots- 
DUVALS it is not possible to recognize in his A. dexamene (from the Argentine Republic) any more than 
in lathonioides Blanch., anything but cytheris 299 with pale and feebly marked undersides. Also A. montana 
Reed from the Central Cordillera of Chile, which was by Bmre considered as identical with dexamene Bsd., 
appears in the figure as a similar, rather smaller Cytheris 9. — lathonioides Blanch. is above pale fulvous, 
slightly obscured in the basal area; the markings of the forewings somewhat broader and heavier than in 
normal cytheris, the median spots united to a strongly tortuous band. The postdiscal spots on both wings 
heavy, likewise the submarginal row which consists of uncommonly large rhombic spots. On both wings the 
terminal lines are broadly confluescent on the nerves, in the interspaces interrupted, representing a series of 
fairly large spots placed on the extremities of the veins. But in the inner half of the hindwings the mar- 
kings are quite slight. Underneath the forewings are more yellowish-brown than in typical specimens, on the 
hindwings the portions which in those are fulvous, are paler, greyish-brown with greenish tone. 1 2 (type) 
from Sa. Rosa, in the Museum for Natural History at Paris. — anna blanch. (= anna Reed) appears, from 
several $3 from Ushuaia in the Paris Museum, rather smaller than normal cytheris; on the upper surface they 
can hardly be distinguished from them except by the more conspicuous obscuration of the basal area which 
on the hindwings reaches beyond the middle of the cell. Underneath the forewings are quite as in typical 
specimens, the hindwings fiery cinnamon brown, very densely scaled with yellowish, but without any markings 
whatsoever outside of the two pale streaks. It is found, according to Epmonps, from the Straits of Ma- 
galhaens to the Atacama Desert in northern Chile, up to altitudes of 6000 ft. Dr. SrauprncER writes 
concerning these forms: ,,Among the many hundreds of specimens I received from Chile I have never been 
able to discern more than one very variable species, A. cytheris, with which surely also the form from Fireland 
must be classed. — siga Hbn. refers to the northern, alpine form of cytheris, which, however, does not 
vary constantly from the typical form, either in size or colouring. — As valdiviana Phil. we find descri- 
bed a form from Central Chile (Valdivia) deviating from ordinary cytheris in the unusually prominent and 
heavy markings on the inner margin of the forewings; also on the hindwings the postmedian row of dots 
is always very distinct, whereas in the more southern forms it is quite rudimentary. 
A. darwini Staud. was described from specimens taken by Dr. NornpENSKJOLD near Puntas Arenas in 
November and December 1895 ($3, 32—34 mm), and by Dr. Onury in February 1896 cn the Rio Grande 
in East Fireland (29, 30—32 mm). It probably is closely allied to the following A. modesta which it seems 
to connect with the preceding group. The original description of Dr. SraupincGErR’s is as follows: “‘dar- 
wini is about as large as the smallest Antarctic cytheris (30—34 mm). The gg above paler and brighter 
than those of cytheris, rather golden brown. The 2 has the upper surface of the forewings and the inner 
margin of the hindwings suffused with greenish-grey, in consequence of which the bright brown ground- 
colour is here hardly noticeable. The black markings as in most Argynnis, but heavier than in cytheris 
and partially confluescent, forming below the discal cell near the inner margin invariably a sharp outward 
angle touching the median vein; in all the forms of cytheris with the exception of valdiviana this mark is 
very slight, often almost completely absent. The first transverse row of black spots beyond the cell forms 
in darwini a narrow, contiguous, strongly curved and dentate band, which is not observed in the southern- 
dexamene. 
montana. 
lathonioi- 
des. 
anna. 
siga. 
valdiviana. 
darwini. 
