100 



variation ; other species are confined within certain portions 

 of it. 



"The species exhibited are E. manto from the Val Tuoi, 

 lower Engadine. Few of these are as fully marked as the 

 average of these taken at St. Anton, a spot some thirty miles 

 to the north. The most frequent form has two rusty dashes, 

 with a black spot each. Sometimes there are one or two 

 more brown dashes, and one on the hind wing is very 

 exceptional. In some specimens the rusty dashes persist and 

 the spots are wanting ; in others the spots persist with hardly 

 a trace of rusty spots ; in some both are wanting. 



" E. epipliron, the series is short, but no two specimens are 

 precisely alike. 



" E. melainpus, a specimen with comparatively little varia- 

 tion. Two of the specimens are almost without the black 

 dots. 



" E. phavte, there is considerable range in the amount of the 

 rust-coloured dashes. None approach the well-marked forms 

 taken in Carinthia. The dashes are reduced in one or two 

 specimens to two mere points, so that a spotless form 

 probably occurs at this locality. 



" £. gorge ; those from Val Tuoi are chiefly the usual form 

 varying from spotlessness to var. triopes, both rare. At 

 Pontresina triopes was abundant, type-form rare, and any 

 further approach to spotlessness was not met with. 



" E. innestra, the spotless form the more usual. One from 

 Val Tuoi is distinctly tending to the loss of the rusty 

 blotches. 



" The close resemblance of some of the manto and pharte is 

 very striking, and is to be taken with the fact that they flew 

 abundantly together on the same ground, and could rarely 

 be distinguished on the wing." 



Mr. J. P. Barrett exhibited (i) to show variation in size, 

 Colias hyale, a specimen exactly two inches and one eighth 

 in expanse, and another exactly one inch and a quarter. 

 Both were captured in the same field at Margate (where 

 they were undoubtedly bred) on August 17th, 1900. Also 

 Ennomos alniaria {autumnaria), one specimen two inches and 

 one eighth, and another one inch and five eighths. Both 

 were females, from a similar batch of eggs, and similarly 

 treated as to food, etc. 



2. A variety oiAspilates citraria {pchrearia) , a male specimen, 

 pure yellow, with no lines ; the only variety noticed this 

 season amongst hundreds taken. A gratis putris, a specimen 

 of the spring brood. 



