8 I Canadian Arctic Expedition, 1913-18 
The pale orange-coloured scales on the primaries of the above specimens of 
hoothi are in general similar in shade to Elwes' figures, 1, 4 and 5, already referred to 
and in Ridgway's Color Standards and Nomenclature (1912) come nearest to light 
orange-yellow or deep chrome, whereas in all of the specimens which we have de- 
termined as hecla glacialis, the colour of the wings is not yellow but in most ex- 
amples is nearest to orange as figured by Ridgway in the work referred to. In these 
latter specimens too (41 examined) there is an absence of the greenish-yellow scales 
which in the specimens of hoothi are present along the marginal band and also 
for the most part over the entire secondaries. In the three specimens referred to 
above, recorded erroneously as hoothi the colour of the secondaries is similar to 
the colour of the primaries, as is the case in the series of specimens of glacialis 
examined. The discal spot on the secondaries in the latter butterfly is also much 
larger and redder in colour than in the specimens of hoothi. The colour of the 
figures of hoothi in Ross' Second Voyage referred to above is very close to bright 
chalcedony yellow (Ridgway, 1912). Verity^ figures a coloured male (type) of 
hoothi, plate XLIII, 37. Two of our specimens resemble this figure very closely. 
Examining the six specimens more closely the following differences are 
apparent : — 
Three of the specimens from Bernard harbour, have the marginal band well 
defined. The band on the primaries in these specimens varies in width at vein 
3 from about 1 mm. to about 2 mm. On the secondaries there is the same varia- 
tion in width. The marginal band on the latter wings in two of the examples 
ends abruptly at about midway between veins 2 and 3. In the other of these 
three specimens the band on the secondaries is only clearly defined to vein 4. 
The other three males have, also, narrow marginal bands but these are not so 
well defined and are preceded on the primaries by yellowish-green spot-like areas 
which give them a female-like appearance. In none of the specimens are the 
veins in the marginal band brightly coloured as in hecla glacialis, all are con- 
colorous with the band itself, but there are, however, in the marginal band on 
the primaries a series of transverse, short, greenish-yellow dashes midway 
between the veins. One specimen in fairly good condition has only a slight 
tinge of yellow in the discal area, all the wings in general being of a greenish- 
yellow colour. The discal spot on the primaries varies in size; in two examples 
it is rounded, in the others more like a short dash. 
The underside of the secondaries is of a dull yellowish-green, the submarginal 
area being paler and showing up as a band. In the better preserved specimens 
there is a distinct pale yellowish-green streak near the centre. The discal spot 
on the hind wings is rounded, white in colour, bordered with rosy-red which 
colour in two examples runs outwardly to a point. In the basal area near the 
body there is also a conspicuous rosy-red dash similar to that which occurs on 
hecla glacialis. The primaries underneath are in general similar, the yellowish 
flush in the discal area varying in intensity. In one specimen nearly the whole 
underside of the primaries is yellowish. In this latter specimen there is a 
conspicuous row of black submarginal spots. The discal spot is conspicuous, 
whitish in the centre and margined with black. 
The specimens vary in expanse of wings" from 36 mm. to 43 mm. Two 
examples, both from Bernard harbour are shown on Plate IV, figs. 1 and 2. 
In the Entomological Record for 1910^, I recorded a specimen of C. hoothi 
from Dawson, Yukon Territory, 1908 (A. Day). This record should undoubtedly 
refer to hecla glacialis. 
' Rhopalocera Palsearctica. 
2 Rep. Ent. Soc. Ont.. 1910. 
