38 
If these butterflies do choose a resting place to match their own 
colour, definite evidence of it is most likely to be obtained in these 
latitudes, where the much longer period of light, while the insect is 
still at rest, makes their selection of a suitable sleeping-place so much 
more important. 
With regard to the other “ whites,” P. napi was to be seen in the 
grassy hollows near the river. This is a new record: South in his 
recent book states that it has not been recorded from further north 
than Ross and Moray. P. rapae was abundant later in the village, 
evidently just emerging. 
During the remainder of the time we took Larentia caesiata 
commonly, even at sea-level, on the tree trunks and rocks, and two 
Acidalia fumata (new: W. Ross). We also took a few B. repandata , 
rather darker and more uniformly grey than Rannoch ones, on rocks in 
the woods, and with them three Dasydia obfnscata (new : Ross). On 
the moors larvae of Lasiocanipa qnercus and Saturnia carpini were 
noticed. On the last day of our visit, numbers of Argynnis aglaia 
suddenly appeared. 
We devoted a good deal of time to looking for Camptogramma 
bilineata in the -woods near the Kyle, and most of those taken were 
found on the rocks, often under a ledge. A total of 98 males and 
18 females were examined; of the males 22 were quite normal, 
55 showed five dark spots on the forewings to a fairly marked 
degree, of the remainder, some showed general darkening of the ground 
colour or unusally distinct strife. In some of the spotted examples 
the spots are very conspicuous, and in one they meet across the central 
band. Of the 18 females, only three were without black spots or 
darkened strife, and one has the striae much blackened, and a strong 
black band running along the inner side of the second line, which 
gives it a very striking appearance. Another point brought out by my 
specimens is a certain degree of sexual dimorphism. In every female 
the ground colour of the fore-wings is of a soft brown, contrasting -with 
the orange colour of the hindwings. In the males, the upper wings 
are yellow, and even in the darker specimens, the colour is always 
different from the brown of the females. In Aberdeenshire I have 
taken similar brown forms -with the commoner yellow ones. In 
England, this species usually sits amongst the leaves of bushes, 
whereas here they were frequently exposed on the face of the rocks, 
and nearly always on the rocks, even though they were often under a 
ledge. This difference of habit may account for the darker, and less con¬ 
spicuous colour of the Sutherland form and especially for the browner 
females. 
As a whole the species which show r a tendency to melanism are not 
numerous, and some are actually paler than more southern races. 
To sum up, we took a total of 85 species, nearly all in the imago 
stage, 28 are probably new to the county list, and 3 doubtful. Of 
these 31, two are noctuae and 25 geometridae. 
List.— Pieris brassicae, P. rapae, P. napi, Polyomwatus a lexis, 
1 . icrticae (larvae), 1'. cardiii, Argynnis aglaia, Coentmymplia darns, 
Poecilocampa populi (larvae), Trichiura crataegi (larvae), Lasiocanipa 
querciis (larvae), Saturnia carpini (larvae), Platypterycc lacertinaria* 
Hepialus velleda, H. huinuli, Nenieophila plantaginis, Phraginatobia 
fuliginosa, Demas corxyli, Cymatophora duplaris, Acronycta leporina, 
