490 MR. A. 6. BUTLER ON [Nov. 4, 



nebula being present upon the primaries : this I propose to regard 

 as a variety of T. acaste, modified in colouring by crossing with T. 

 ccelestis. 



Intergrade 1 = T. coelestis, var. 

 d, Aden, 2nd March, 1883; 5, 10th April, 1884; ?, 1st 

 July, 1883. 



Intergrade 2= T. acaste, var. 

 d 2, Aden, 26th February, 1884, in coitu (two pairs). 



26. Teracoltjs acaste. 



Pontia acaste, Klug, Symb. Phys. pi. 7. figs. 16, 17 (1829). 



d, Aden, 27th March, 10th April (from chrysalis), 1884; $, 

 3rd Juue and 5th September, 1883. 



In Hewitson's collection two females of T. acaste stand under T. 

 halimede, whilst T. acaste is represented by four females of T. 

 pleione and one of T. acaste, T. pleione consisting of one typical 

 male and three males of the variety T. miriam ; one of the females 

 labelled " Red Sea " corresponds more closely with Klug's figures 

 than those in the present collection, but is evidently referable to the 

 same species. 



As T. acaste appears to have a wider range than T. coelestis, it 

 would be at any rate premature to regard them as mere sports of one 

 variable species. 



27. Teracolus protomedia. 



Pontia protomedia, Klug, Symb. Phys. pi. 8. figs. 13, 14 (1829). 



d 2 > Haithalkim, 4th and 5th April ; $ , Lahej, 6th April ; 

 d 2 > Shaik Othman, 20th April and 1 1th May, 1884. 



It is a curious thing that specimens of this species almost in- 

 variably arrive in a more or less broken condition ; of the ten 

 examples before me only two males came to hand in anything like a 

 perfect state ; possibly their brilliant colouring may render them 

 especially attractive to birds. The species is an interesting one, since 

 it links the T. hewitsoni and T. halimede groups. 



28. Teracolus miles. 



Teracolus miles, Butler, Ann. & Mag. Nat. Hist. ser. 5, vol. xii. 

 p. 105 (18S3). 



d, Aden, 11th July, 1883. 



The example does not perfectly agree with the type from the 

 Victoria Nyanza, but is too close to render it safe to separate it 

 upon a single specimen. Major Yerbury says that he has only seen 

 two examples, " one on the 7th July and the other a few days 

 later." 



29. Teracolus epigone. 



Anthopsyche epiyone, Felder, Reise der. Nov., Lep. ii. p. 186, 

 n. 180. 



d 2 , Haithalkim, 4th and 5th April, 1884. 



