A CATALOGUE OF THE LEPIDOPTERA OF IRELAND. 123 



from widely distant localities, and not localised. A dark brown 

 specimen from the Bog of Allen, near Banagher, has exactly the 

 coloration of H. adusta, and approaches Mr. Tutt's description 

 of his var. suffma, but the markings are not suffused but 

 blotched with black, especially on the inner margins of tlie 

 broken subterminal line and between the stigmata. 



Hadena thalassina, Rott. — Common. Two Scandinavian 

 examples from the collection of Sven Lampa show a warm 

 greyish brown ground colour, with the pale strigae and stigmata 

 very slightly represented, but on one the dark ^ trait and stig- 

 matal outlines darkly marked. Their special characteristic is, 

 however, the almost total absence of the whitish basal patch, 

 though the black forked streak below it is retained. This pale 

 patch, distinguishing this species usually from every form of 

 R. adasta, is here obsolete, except for perhaps a faint pallor of 

 the ground colour. With this exception identical greyish forms 

 (var. humeralis, Haw.) occur in Ireland, but rarely. One from 

 HoUybrook, near Boyle, is almost of a unicoiorous grey, marked 

 only by the white and black basal traits, and some traces of the 

 subterminal pale line. Var. achates^ Hb., occurs rarely, as at 

 Sligo, and Favour Koyal, Tyrone. The normal forms of Irish 

 H. thalassina are very bright and strikingly marked, being in a 

 series far handsomer than such as I have seen from England. 

 That this is so, the frequently distinct delineation of the dentate 

 mark (which Mr. Tutt, in describing H, contigua, notices as 

 absent in H. thalassina) is evidence. Their ground colour varies 

 from a rich brown madder to the cold bistre brown of H. adasta. 

 The stigmata are often ringed with white, and sometimes filled 

 in with grey, and the black and white strigse and blotches vivid 

 and distinct. The most striking form I have ever seen has the 

 ground of brownish grey, with large white stigmata (except the 

 lower part of the renilorm), dentate mark, costal dashes, and 

 strigse. Throwing these into relief are sharply pencilled black 

 markings and the ^ trait, producing a very chequered appear- 

 ance. Another form, of a warm brown ground, has the stigmata 

 and dentate mark of paler tone, fused together, and with suffused 

 outlines. The elbowed and basal lines are twice as broad as in 

 most specimens, and shaded off at the edges. 



Hadena contigua, Vill. — Local, and sometimes abundant. 

 Very bright and handsome forms are found on the mountains 

 bordering L. Gill, Sligo, and (but rarely) among those among 

 which the E. Eoughty takes its rise above Kenmare, probably 

 approaching the form which Mr. Barrett noticed at Cannock 

 Chase. They are suffused with a bright pink on the areas of the 

 stigmatal and dentate and costal base marks, and when fresh 

 are the most beautiful of all the genus Hadena. In one light 

 Sligo example the whole ground colour (except a white patch of 



