from the region of the Straits of Gibraltar . 391 



Margarodes unionaUsy Hiibn. — Not rare at Gibraltar, 

 at ivy-blossom and light in the autumn ; also at Tangier 

 and Be'nzus Bay. 



Metasia suppandalis, Hubn. — Taken amongst wild 

 thyme at San Roque, June, 1888. 



Stenia hriigierialis, Dup. — At Campamento in Sep- 

 tember, 1887. Apparently rare. 



Myelophila cribrella, Hiibn. — Not uncommon among 

 thistles, &c., at Campamento in May. 



Ancylolomia tentaculella, Hiibn. — In grassy places ; at 

 San Roque and Campamento, September and October. 



In addition to the preceding one or two species of 

 Geometrce and several Pyrales and Crambites still remain 

 undetermined, being in most cases represented by single 

 examples in indifferent condition. 



I have to acknowledge the kind assistance afforded me 

 by Mr. A. G. Butler and Mr, W. Warren in working out 

 many of the more obscure and difficult species noticed 

 in this paper. 



