LITHOSID.^Z. 221 



the rocks or undercliffs within a few yards of high- water 

 mark. First found in these islands in 1864, when a worn 

 specimen was taken at Torquay, Devon ; and several speci- 

 mens, by myself, at the lighthouse on the rocks of the Hill 

 of Howth, Dublin. In this last locality it proved to be 

 tolerably common, and was freely collected and reared by the 

 late Mr. E. Birchall, and continued to be found, in fair 

 numbers, until between 1870 and 1875, when so vigorous an 

 onslaught was made upon it by professional collectors that 

 it was not again seen there until 1890, when a specimen 

 was taken by Mr. G. V. Hart. The only other Irish 

 locality of which I am aware is Tramore, Waterford, where 

 specimens were obtained in 1866. Meantime, it has been 

 found, though not commonly, in various places on the 

 English coast — Torquay, Dartmouth, Torcross, Bolt Head, in 

 Devon ; near Rye, Sussex ; and at Romney Marsh, Kent ; 

 and I again found it, though rarely, in two places close to 

 the sea, at the foot of cliffs, in South Pembrokeshire ; whence 

 it seems probable that close search only is required to obtain 

 it in other similar places. Abroad it is common in Central and 

 Southern France, Spain, Italy, Austria, the Tyrol, Carniola, 

 and Dalmatia. 



6. L. complana, Z. — Expanse, 1| to If inch. Fore wings 

 shining slate-grey, spotless ; costa broadly yellow to the apex ; 

 hind wings yellow, sometimes shaded with pale grey. 



AntennEe threadlike, slightly fringed, in the male, with 

 delicate, rather distant, bristles ; grey. Head and front of 

 thorax rich orange-yellow ; back of thorax slate-grey ; abdo- 

 men shining grey with the last three segments tinged with 

 yellow or else wholly yellow ; anal tuft yellow. Fore wings 

 long, narrow, of fairly even width ; costal margin very slightly 

 curved, and having a sort of fold of scales beneath ; apex 

 blunt and squared ; hind margin nearly straight ; dorsal margin 

 almost straight from near the base ; shining slate-grey with 

 a rather broad, sharply-defined, deep yellow stripe along the 



