THE LEPIDOPTERA OF PERTHSHIRE. 75 



shire as an aberration. It is smaller and less ocellated even 

 than Laidion. 



Erehia Mthiops (Blandina) and E. Epiphron ( Cassiope), 

 the latter not occurring lower than 1,600 ft. ; both of these 

 species we probably obtain from the Alps. 



Polyom. Asfrarche, var. Artaxerxes. — Common wherever 

 Helianthenum vulgare grows in the district. This insect 

 is exclusively Scottish. These are the only native butterflies 

 which can be called Alpine; they are all found in Perth- 

 shire. 



Acronycta Myricce. — Exclusively Scottish and Iiish, un- 

 less we regard it as a variety of EuphorhicB. 



Crymodes Exulis. — A most interesting species, found also 

 in Iceland, Labrador and Greenland. It is suggested by Dr. 

 Staudinger that it may be a Darwinian species of diaillardi, 

 a native of the Alps, the Pyrenees and Norway, and that 

 this again may be a Darwinian species of Zeta, from the 

 Pyrenees. It varies very much; it would be interesting for 

 any one possessing genuine Scottish specimens to compare 

 them w^ith Zeta and Maillardi, as also with Icelandic ex- 

 am j)les of Exulis. 



TriphcBna Comes, abcrratio Curtisii. — This is such a 

 very different looking insect from Comes ( Orhona) that it is 

 well to di'aw attention to it. ]Mr. Newman (as Dr. White 

 mentions) regards it as a distinct species ; it is probably un- 

 known to Dr. Staudinger, unless it answers to his aberratio 

 prosequa, " obscurior, distinctius variegata." Mr. Norman 

 seems (Ent. Mo. Mag., April, 1872) to have finally settled 

 the question, and proved that Curtisii is only an aberration 

 of Comes, or, as it is more commonly termed, Orhona. 



Noctua Conflua, perhaps a northern and Alpine variety 

 or a Darwinian species of f estiva. 



Noctua Sobrina, an insect as far as the British isles are 



