CATAlOStJE OF MOTSS. 129 



on-Tyne. The larva feeds in birch leaves, causing a blotch 

 in them. 



54. M. salopiella, Staint. 



Micropteryx salopiella. Staint. Man., vol. ii., p. 303. 



„ ,, Meyr. Hdbk. Brit. Lep., p. 803. 



Rather a local species, and not extending very far north. 

 Our only record is that Mr. Sang took larvae of it at High 

 Force in August, 1877. Like the last it makes a blotch in 

 birch leaves. 



55. M. semipurpurella, Steph. 



Micropteryx semipurpurella. Staint. Man,, vol. ii,, p. 304. 

 „ „ Meyr. Hdbk. Brit. Lep., p. 804. 



A common species, notwithstanding the paucity of records. 

 It is marked in the "Manual" as occurring regularly at 

 Newcastle-on-Tyne. It is common in Hezleden Dene, and Mr. 

 Gardner tells me it is also common in Upper Teesdale. 



56. M. sangii, Wood. 



Micropteryx sangii. Meyr. Hdbk. Brit. Lep., p. 804. 



Discovered since the publication of the "Manual," and only 

 taken here by Mr. Sang, after whom it is named. He found 

 larvse on the railway banks near Darlington on 7th June, 1866. 

 Meyrick, however, appears to doubt its occurrence in Durham, 

 giving, as its habitat, " South of England to Herts and Here- 

 ford," and mai'king Durham with a " ?." 



57. M. unimaculella, Zett. 



Micropteryx xmimaculella . Staint. Man., vol. ii., p. 304. 

 ,, , , Meyr. Hdbk. Brit. Lep., p. 804. 



Another insect generally common, but scarcely recorded here. 

 The " Manual " gives it as of regular occurrence at Newcastle- 

 on-Tyne, and in Durham Mr. Gardner has found it in Upper 

 Teesdale. I know of no other notices of its appearance in 

 these counties. 



