firth ; some lovely rich orange-brown ^s occurring among the ordinary dark ones ; 

 the ? s were also remarkable for their pale ochraceous colour with bluish-grey fascise. 

 L. ceesiata occurred, from the ordinary pale form to a dark brown black, the latter 

 being very difficult to see in the gloaming ; a few specimens were taken almost black. 



Emmelexia albulata, var. thulex. — This occurred in the damp meadows, and, in 

 fact, wherever its food-plant occurred ; we did not see any specimens exactly the 

 same as those taken in the south, the markings being much more distinct, often 

 banded together so as to form a fascia, while in many the colour was of a dull leaden 

 or tarnished silver-grey. 



Eupithecia venosata. — We succeeded in getting a number of larvae of this 

 species in the flower-heads of campion. E. Curzoni was taken in small numbers 

 in three different localities. 



Melanippe montanata was not uncommon on the hills ; the contrast of colour 

 between the markings and ground-colour being much greater than seen in specimens 

 from the south ; the var. .ihetlandica was very scarce, not a dozen specimens falling 

 to our three nets. M. fluctuata. — This species was taken at odd times near the 

 houses at Balta Sound. 



Coremia munitaia was very rare, in striking contrast to Mr. King's experience 

 in 1889 ; the specimens taken varied much from the ordinary type, all being more 

 or less suffused with yellow, and the markings duller and less distinct. 



Cidaria immanala was to be had in fair numbers in one glen near Burrafirth 

 towards the end of August. C. testata. — One specimen occurred at sugar near 

 Balta Sound. 



Leucania pallens* — One specimen was taken flying off sugar near Balta Sound 

 late in August. 



CharcBas graminis was taken from the middle of July, right on till the end of 

 August ; some nice forms were seen of a rich tawny colour with strong markings. 



Crymodes exulis was our best capture, and by no means common, even for the 

 time and trouble expended upon it ; the specimens taken varied tremendously, but 

 curiously enough a large proportion were of the beautiful yellow form, and all were 

 males. 



Mamestra furva was taken in fair numbers while searching for the above. 



Agrotis suffusa was taken in rather worn condition near the lower end of 

 Loch of Cliff. A cursoria. — Towards the end of August a few specimens of this were 

 taken on the Burrafirth Sands, they were all rather dark, and varied considerably 

 from those seen in the south. A. porphgrea.—We took both pupae and imagos of 

 this species not uncommonly ; the specimens were very large and beautifully marked, 

 but much darker than the ordinary form ; a few specimens had the colour of the 

 ground a peculiar greenish tint. A. lucernea. — The few specimens of this had the 

 colour of the wings a glossy blue-black, giving the insects a very rich appearance. 



Noctua glareosa. — The ordinary type was very scarce, but in its place was to be 

 seen the northern dark form, which may be described as a dark mahogany-black with 

 pale markings ; it was fairly common near Balta Sound flying over the heather ; 

 sugar did not seem to have much attraction for it, as only a few were taken by this 

 means, while numbers might be found in copula, on the wires stretched between the 

 sugared posts ; searching for it was rather hard work, as owing to the expense of 

 wood the posts were not very liigh, and thus one has to bend down pretty hiw to 



