344 Mr. H. J. Elvvcs on the 



colour, or nearly so, as the rest of the hind-wing. The 

 friufres of thcano are distinctly white when fresh, chequered 

 with brown at the ends of the veins, whilst in maurisins 

 they are unchequered and usually dark. In my Inst 

 Revision of EnMa (Trans. Ent. Soc. Lond., 1898, Pt. II, 

 pp. 175 and 188) I treated stuhhendorji as a form of 

 maicrisms, whereas by these characters there is little doubt 

 that it is a var. of theano, though the marginal and basal 

 markings of both wings below are much less developed and 

 sometimes entirely absent. I did not see this form in that 

 part of the Altai which I visited. Pcaoloioslcyi, on the other 

 hand, I have little doubt is an Eastern form of maurisius ; 

 I have specimens collected by Leder in the East Sayansk 

 mountains which arc absolutely intermediate, and some of 

 the females cannot be distinguished from Altai specimens. 

 This variety is more distinct in the Chamardaban Moun- 

 tains south-east of Lake Baikal, and extends in a small 

 arctic form, in which the spots of both wings above and 

 below are much reduced in size, as far north as the Olenek 

 river within the Arctic Circle, where it was collected by 

 Czekanowsky. As it was described from the Yakutsk 

 district, this small form is probably the typical one. 

 The species will now stand as follows : — 



Maurisius, Esp. Altai, 5, 8000 feet = kindermanni, 

 Stgr. 



var. horealis d oricntalis, pawloujshyi, Men. East Sayansk 

 Mountains, Chamardaban Mountains, N.-E. Siberia. 



var. occidentalis, haberhaiceri, Stgr. Tarbagatai Moun- 

 tains. 



Theano, Tausch. Altai, 3, 6000 feet. 



var. stuhhendorji, Men. S.-W. Altai, (? Semipalatinsk 

 district). 



123. E. kefersteini, Ev. Plate XI, fig. 8. 9 <? 10 $ 

 (fig- 7 ?). 



Next to maurisius, this was the most abundant Erehia 

 in that part of the Altai which I visited, from about 5500 

 — 7500 feet, and is extremely variable, as will be seen by 

 the four figures in my Plate. I cannot say that either of 

 these four figures can be considered typical, three 

 representing rather the extreme variations in either 

 direction, one (fig. 10) with well-developed ocelli, another 



II 



