LARENTin.K—CORKMIA. 149 



triangular spot, followed by a, very Hat sub-apical black 

 spot ; of this a very beautiful specimen was taken by Mr. 

 C. W. Watts in London. Another variety, taken at King's 

 Lynn by Mr. E. A. Atmore, has the costal blotch sc|uared 

 and very curiouslvr formed. Another, in Mr. Sydney Webb's 

 collection, has the margin of the basal blotch and central 

 complete band black, but their middle area as pale as the 

 ground colour ; and one of his mdondu^ forms has a most 

 exquisite series of minute black dashes dovvn each of the lines. 



Another constant form of variation is in the ground colour 

 and in its rippling of slender transverse lines. In thu South 

 of England and in lowland districts northward, and even to 

 the Orkneys, the ground colour in many specimens is white, 

 often verv clear bright white, with but little rippling of dark 

 lines, or with these merely represented by dots ; or, in rarer 

 instances, entirely absent, leaving the paler areas chalky- 

 white. In hill districts, especially throughout the Midlands, 

 West and North of England, the ground colour is apt to be 

 more tinged with grey, and the lines to be more distinct, or 

 else more clouded, so as to produce a darker effect, which 

 in Scotland is still further extended by very considerabk 

 blackening of the whole surface ; while in the North of 

 Ireland the rippled lines become so much blacker and more 

 distinct as to produce a really beautiful eifect. This occurs 

 on the white as well as on the grey ground colour. In the 

 South of England it occurs rarely that the ground colour is 

 tinged with brown instead of grey, and this also seems to be 

 noticed in the East of Scotland. 



A specimen in my own collectiou, taken in South London 

 some years ago by my eldest son, shows a singular transposi- 

 tion of colours, its central band is dusky niiiir, except a large 

 discal black spot ; but the usually pale areas are all smoky- 

 black, except an unusually broad white subterminal line. 

 Another has no definite markings except the basal blotch, 

 the rest being suggested only by faint smoky clouds ; and a 

 third has a black central baud, but both inner and outrr 



