278 THE entomologist's record. 



T. histnrtata (1st brood) : ova of T. histnrtata (2nd brood) : ova of 

 T. hiundularia : ova of hybrids, 2nd generation : : 4-25 : 3-75 : 8'5 : 3. 

 The ova of the Perth T. histortata were of about the same 

 dimensions as the largest Clevedon ova, i.e., -785 mm. (long axis), 

 and -556 mm. (short axis). Some of the differences of colour I 

 described in the Ent. Record, vol. ix,, p. 150. The ova of the Perth 

 T. hiMortata were a brighter green than those from Clevedon, and 

 mottled in assuming the pale yellowish-green tint, a mottling I had 

 not seen in any of the other ova. The ova of the 2nd generation of 

 hybrids varied, some were deposited pale yellowish-green, others a 

 brighter green with faint bluish tinge. I noted no other differences 

 in the ova, either in shape or surface. The variation in colour and 

 intensity of the markings of the larvae was as great in all the broods 

 as I found in 1896, but I ascertained that the deeper coloration and 

 markings were not characteristic of the later broods as appeared last 

 year, as they were prevalent in the early brood of T. Jii-stortata, and 

 were less developed in the brood of T. binndularia, Avhich showed a 

 large proportion of pale putty-coloured larvi^. The Perth larvje ■were 

 full sized, and very strongly marked with dark brown, black and 

 reddish, and presented very few of the paler forms. I examined the 

 characteristic V marking of the Tephrosias in the 3rd stage, carefully, 

 but cannot agree as to any constant difference existing in this mark. 

 I find it varies from a complete V to almost obliteration at the apex, 

 in every degree, in all the broods indiscriminately. I think, it the 

 larvae are examined in sufficient numbers, it will be found that none 

 of the major markings show any constant difference. The size of 

 the larvae of the two Tephrosias did not appear to vary as much as 

 in 1896, though the early brood of T. histortata seemed somewhat 

 larger on the average, a result probably connected with the length 

 of the feeding period. The ova of the hybrids mentioned in the Knt. 

 Eecord, vol. ix., p. 150, hatched April 21-29th. and the larvfe pupated 

 between June 1st and 14th, except a few laggards. Some of the 

 imagines began to emerge on June 11th, and have continued doing so 

 to the present time (July 15th), but only sparingly the last few days. 

 Between June 13th and 16th I paired the following hybrids :- — 

 <y T. histortata -\- ^ T. ab. delamerensis, ^ T. histortata -\- J T. 

 hiundidaria, ^ {S T. histortata + J T. ab. delamerensis) with J 

 {$ T. ab. delamerensis + $ T. histortata), ^ (^ T. hiiindularia + 2 

 2\ histortata) with $ {3 T. histortata -\- $ 1\ hiundidaria), a.iad <? 

 ((J T. histortata + ? T. biiindid aria) vfith $ (g T. biundularia -\- 

 $ T. histortata), 12 pairings in all. Each yielded ova, except one 

 pairing of 3" T. histortata + ? T. ab. delamerensis, which two I 

 found in eopnld, and as they remained so over two days, forcibly 

 separated them. The batches seemed to be a little smaller, for the 

 most part, than those of the 1st generation, numbering between 100 

 and 200 ova. The ova were similar in shape and superficies to those 

 already described, but smaller and variable in colour, as stated above. 

 They are now hatching, some larvfe having appeared on July 1st. 

 The characteristics of the hybrid imagines are — small size, 1" 2'" to 

 1" 5'" , only two or three reach 1" 6'" , and most are 1" 3'" or 1" 4'" , 

 and a blending of the facies of the parents in variable degrees, which 

 renders definition impossible, except in those sprung on one side 

 from var. delamerensis, which show a large proportion similar • to, 



