33 



ing Z. Iiippocrt'iiidis, Steph., from N. Wales and Co. Clare, and a 

 yellow Z. tilipenditlae from N. Kent. 



Mr. T. H. Grosvenor read the following notes on his 

 exhibit : — 



" The Z. fili/ifndiilae exhibited principally come from the 

 North Downs, showing various minor forms of variation, a 

 common form being a ^ with spot six reduced in size and 

 with the border of secondaries considerably broader than 

 normal ; this may be found on the chalk hills in July, and 

 corresponds exactly with the marsh form occurring in June. 

 A feature of Z. hippocrepidia, Steph., is said to be a green nervure 

 running through spot six; this feature is also conspicuous in those 

 specimens taken in July. The ? is not found with spot six reduced, 

 in fact this spot is generally the most developed. It is impossible 

 for this small-spotted form to be a hybrid, as Z. trifaUi does not 

 occur in the district. The typical ground colour of the primaries 

 is dark blue in the $ and bronze green in the ? , but these may 

 be reversed, although such variation may be looked upon as a rare 

 form. The result of breeding between 2,000 to 8,000 during the 

 past season. produced 1 $ bronze green and 2 5 blue; but one <? 

 had the left primary blue, and the right bronze green. A similar 

 2 was found, but in this case the left primary is bronzy blue and 

 the right steel blue ; this may have been the result of some injury, 

 as the left secondary is perceptibly smaller than the right. 

 Confluent forms in this species are of rare occurrence. Pathological 

 and teratological forms are abundant, and probably the two $ s 

 shown come under this group, having the scaling thin and the 

 red colour of the typical form replaced by a pinkish colour. 



" In Z. trifalii, the commonest form of variation is confluence, 

 especially in the J ; there is also considerable variation in the 

 breadth of border. This species was taken flying in company with 

 Z. Itippocreinditt, Steph., or Z. filipeudiilae, and on one or two 

 occasions in past years cross pairings have been found. Last 

 season the pair exhibited were found paired, and produced a large 

 number of fertile ova, which in due course hatched and are at 

 present just starting to feed. 



" There was also a specimen with a minute sixth spot and with 

 normal border to secondaries. This might possibly be the result of 

 a cross pairing, or Z. trifolii with a sixth spot, or Z. liippucrepidiH, 

 Steph., with the spot very nmch reduced, in fact it very much 

 resembles ?i 3 Z. filipindulae shown by Mr. Tonga taken at Reigate. 



