26 The Scottish Naturalist. 



M. allionella. — Plentiful on heather and Vaccinium among 

 scattered birches at an altitude of 600 feet. I have observed the 

 heather-blossoms perforated by some small larvae in that neigh- 

 bourhood, but have failed to trace them. 



M. piirpurella, M. semipurpiirella, M. iinimaculellay and M. 

 sparmanella, may all be beaten off birch at all altitudes in April 

 and early in May. 



M. suhpurpiirella. — Plentiful on oak. In windy weather I 

 have seen the grass below the oak-trees alive with specimens. 



Swammerdamia apicella. — Not uncommon in June. From 

 the localities in which I find this insect, I presume it feeds on 

 blackthorn as well as on plum. 



S. ccBsiella. — Not uncommon near old thorn-trees and hedges. 



S. griseocapitella. — Common among birch through the summer 

 months. 



Hypotiomenta padellus {variabilis). — One of my sons beat a 

 specimen of this insect off an apple-tree in my orchard in August 

 1876. No other specimen has been observed here before or 

 since. 



H. padi {eiionyjfiella). — This insect occurs in one locality here, 

 where I have beaten it off bird-cherry, and taken it on ragwort- 

 blossom. 



Prays airtiselliis. — Plentiful among the ash-trees. I have never 

 heard of the dark variety being taken here. 



Plutella critciferaruin. — Plentiful everywhere. Varies con- 

 siderably in size and in the colour of the dorsal streak. Those I 

 take at the higher altitudes among the heather are larger and 

 more richly marked — i.e.^ more rosy — than those that frequent the 

 fields below, which usually have white or yellowish dorsal mark- 

 ings. It appears in May, and is flying still in numbers, Oct. 

 19, 1878. 



P. porreddla. — Plentiful among a large bed of Hesperis mat- 

 ronalis, which grows on and under the rocks on Moncreiffe Hill. 

 Flies in May and on through the summer. 



P. dalella. — Common and generally distributed. I presume 

 this insect hybernates, as I have taken it at sallow-blossom in 

 the month of April. 



Cerostoma vittella. — C om m on. 



C. radiatclla (variclla). — This common insect may well be 

 called variella, as it varies here from black to white, brown and 

 yellow, and the markings are just as variable as the ground 

 colour. 



