258 [December, 



angle of this stripe is yisibly toothed, but this is not constant. The hind-margin of 

 the fore-wing has a distinct dark brown border, and the fringes are grey, slightly 

 shining, with a dark dividing line. The hind-wings are pale grey, having a darker 

 border with almost white fringes. Head and central part of thorax white. Palpi 

 brown ; white above. Patagia very pale buff. Body similar to hind-wings. 



Britisli specimens of tins insect often differ considerably from 

 those taken on the continent, insomuch, that in his "Genera et Species 

 Chilonidarum and Cranibidarum," Zeller says, " Varietas anglica tarn 

 singularis est, ut pro specie distincta habuerim ; Stainton (Manual ii, 

 p. 183) earn non distinguit," the hue of the fore-wings being almost 

 unicolorous ochreous-brown, Avith the hind-wings much darker grey, 

 this latter feature being particularly noticeable in some specimens I 

 have from the English lakes. I have, however, some sent me from 

 Perthshire, which present very little difference from continental 

 examples. This species is very generally distributed throughout 

 Switzerland : we have taken it at Aigle, in the Uhone Valley, on June 

 24th, 1880, and it is by no means uncommon in a little salt-marsh 

 near the lake of Thun. 



PTRAMiDELLUS, Tr. (27 — 30^ mm.). 



Tills very fine Cramhus is the largest of Divisions C and D. The ground-colour 

 is ochreous-cinnanion, almost unicolorous, with a shining, white, longitvidinal stripe, 

 increasing in width as it approaches the hind-margin, the basal half being of 

 moderately uniform width, but near the middle it suddenly diverges towards the 

 inner margin and widens very considerably to its termination, which is less oblique 

 than in niargaritellus, being of a rather rounded form ; its anal angle is also some- 

 times toothed. Above this stripe, near the apex of the wing, there is an indistinct 

 dark dash, above which, on the costa, is an indication of a light tooth. The basal 

 half of the inner margin of the wing is bordered by a fine white line, reaching 

 nearly to the centre. The hind-margin is darkly dotted, and the fringes are brown, 

 intersected with white, and having a dark dividing line. The hind-yings are 

 brownish-grey, lighter towards the base, the outer margin is bordered by a darker 

 line. The fringes are whitish, with the usual dividing line. 



Head, collar, and central thoracic line white. Palpi brown, white above. 

 Patagia same hue as fore-wings, body similar to hind-wings. 



I have never taken this handsome species myself, but it is by no 

 means uncommon among the Swiss Alps, whence all my specimens 

 were sent me. 



LATisTRius, Hw. (24 — 26 mm.). 



The fore-wings are shining ochreous-brown, tinged with red, with tlie sliining 

 white stripe reaching to the extremity of the fringe, bordered above by a dark line, 

 the ground-colour is paler by the inner margin, and the liind margin is darkly dotted. 

 The fringes are grey, intersected with white, having a darker divisional line. The 

 hind-wings are greyish-white, with white fringes tliat have an indistinct dividing line. 



The head, palpi, collar, and central part of thorax are whitish, the patagia are 

 similar to fore-wings, but paler, and tlie body as the hind-wings. 



