150 BRITISH BUTTERFLIES. 



Butterflies, p. 108, fig. 3). There is, however, a still more remark- 

 able aberration in the British Museum Collection, labelled "w-album 

 var., Konigsberg (Sauter). ' Zell. Coll., 1884.' " This form we may 

 call: 



j8. ab. semialbovirgata, n. ab. — The right wings (considered from the upperside) 

 with the white markings below almost normal, except for a slight widening towards 

 the costa of forewing (making the marks somewhat wedge-shaped) ; the left pair of 

 wings, with the white marks much modified, those of the left fore wings greatly extended 

 in the direction of the outer margin, towards the costa, and those on the hindwings, 

 filling up the whole area between the outside stroke of the W and the internal black 

 edging to the orange band on the hindwings, so that the outer half of the hindwing 

 has a broad white band from the costal margin to the first bend of the W, with the 

 brownish nervures crossing it. 



The appearance of this aberration, of the albovirgata form on one side 

 (see pi. i., fig. 4) and typical on the other (see pi. i., fig, 5), is very 

 remarkable. 



There are also examples in the British Museum Collection, 

 from Sutschan, in one of which the orange band on the underside 

 of the hindwings is particularly incomplete towards the costa, but with 

 specially heavy white scaling in the black marginal arches towards the 

 anal angle of the hindwings. One doubts whether these Sutschan 

 examples are not a distinct species, and we observe a note against the 

 examples in the British Museum Collection, by Elwes, also expressing a 

 doubt as to whether they do not constitute a separate species. At any 

 rate, they must be considered a strong local race, and may be 

 described as : 



y. var. sutschani, n. var. — Black (with a greyish tinge) ; fringes white ; large, 

 oval, grey androconial patch ; tails similar to those of w-album, well-developed in 

 both sexes ; smallest possible trace of orange dot at anal angle ; $ larger than J ; 

 underside rather lighter and greyer than ic-album, white line continuous, and 

 strongly developed from costa to inner margin of forewing ; hindwings also strongly 

 marked with white ; orange band, obsolete beyond middle, very bright in colour, 

 margined on upper edge with black and then white ; a large grey spot near anal angle ; 

 intensely black spot at anal tip, another conspicuous black spot at base of lower 

 caudal appendage, also a very strongly-developed white marginal line. <5 and 2 . 

 Sutschan. Captured by Dorries. 



Staudinger notes (Row. Mem., 1892, p. 147) that " a couple caught 

 by Christoph, at the end of July, near Vladivostok, and one small $ 

 found by Dorries in Askold, tally almost exactly with German specimens 

 of this species, as also do examples reared by Dorries on the Bikin. 

 In a $ reared by Dorries from a larva found at Sutschan, however, the 

 W mark on the underside of the hindwing is almost effaced." This 

 is remarkable when one considers how heavily the Sutschan examples 

 are usually marked with white. He adds that " the Corean form, 

 eximia, Fixsen, consists of large specimens," and he " also received 

 a smaller example from north China." We have no doubt whatever 

 that eximia, Fixsen, is a quite distinct species as treated later by 

 Staudinger in his Catalog, 3rd ed., p. 69, and we do not consider that 

 eximia, Fixs., belongs strictly even to the w-album- group. Staudinger 

 also notes (I J or. Soc. Knt. ii'o.s-s., vii., p. 304) that the examples taken 

 on the Parnassus are larger than, but otherwise not differing from, 

 German examples (antea, p. 149). Ruhl states that, "on the underside of 

 the hindwings, a grey or light blue line edges interiorly the fulvous 

 band, whilst, at the anal angle, the ' eyespot ' is of a deep dark blue ; 

 besides this there is a light blue spot, followed by a black one." This 



