59 
indicated by Hulst (1^ to 1^ inches) helps to favour the' identification, 
as my species measures 84 to 40 mm. Mulleolata was from Colorado. 
Its almost entirely red basal and marginal areas agree with some of 
my examples, the white central area with all, and some other points in 
Hulst’s description agree fairly well, but some do not satisfy me per¬ 
fectly. My species is easy to recognise by its large size, the spread of 
the bright reddish colour basally and marginally, the strong, coarse, 
zigzagged postmedial line, and by its general aspect, but I have failed 
to find any character in wing-markings by which to determine it 
infallibly ; its hind wings are possibly somewhat more elongate than in 
its allies. Although the genitalia have suggested a near connection 
with truncata, the line on the underside of the hindwings is angled 
virtually as in citrata. The Californian example of “ truncata 
mentioned by Packard (Mon. Geom. U.S., p. 109), should probably, 
and the Victoria (Vancouver Island) examples almost certainly, be 
referred to this species, but they are not actually described. 
I conclude by adding a summary of the principal forms and names 
of the two principal species, so far as I have been able to unravel them 
in this paper. I do not again mention the Arran, Indian or American 
ones which I have concluded are likely to be distinct, as they are out¬ 
side its actual scope. 
1. Truncata, Hufn. Central area grey (through strong freckling 
on white ground) ; rust-colour in outer area normal. 
1a. (sub.-ab.) Saturata., Steph. Central area as in type, basal and 
marginal areas rather dark and dull. 
2. (ah.) Ccntum-notata, Schulze. Central band white or whitish. 
3. (ab.) Russata, Schiff. =perfmcata, Haw. Central area black. 
4. (ab.) Rufescens, Strom = comma-notata , Haw. = rnediorufaria, 
Fuchs. Central area tawny, basal and marginal areas normal. 
4a. (sub.-ab.) Mixta, mihi, nov. Central area tawny, basal and 
marginal areas and costa dark fuscous. 
5. (var. ?, et ab.) Schneideri, Sandb. (?) = niyerrimata, Fuchs (certo) 
almost unicolorous smoky-black, or very dark grey. 
6. (var.) Infuscata, Tgstr. Marginal area bluish-ashy, almost 
without markings ; hindwings infuscated. Central area ?. 
7. (var.) Olivacea (Warr., M.S.) mihi. Olivaceous in tone, no bright 
colouring, central area the palest, inner sienna band wanting, outer 
dull. 
1. Citrata, Linn. Central area grey, outer area normal. 
2. (ab.) Pnnctum-notata (Marsh.), Haw. =passeraria, Frr. Central 
area white, outer normal. 
2a. (sub.-ab.) Oinicronata, Don. The white central area more 
marked with curved black lines, forming 0 0. 
8. (ab.) Imwanata, Haw r . = amaenata, Steph. Central area black. 
4. (ab.) Simpliciata, Walk. Central area black, with -white spots 
in its centre. 
4a. (sub.-ab.) Tysfjordensis, Strand. Central area black, -with grey 
spots in its centre. 
5. (ab.) Imolida, mihi, nov. Central area broadly black at its 
margins, grey in its centre, from costa to inner margin. 
xviii. 
