DELIAS. 



421 



Delias flavalba, Marsliali, Proc. Zool. Soc. Lond. 1882^ p. 759. 

 Delias belladonna, var. adebna, Mitis, Iris, 1893, p. 130. 



" Uppersidc white : fore wing with the veins and veinlets broadly clouded with black, leaving 

 only a row of lanceolate white spots on the outer margin, and another row of more linear 

 marks extending across the disc ; hind wings with the veins and veinlets sharply defined with 

 black ; discoidal and median veins clouded with black, the latter broadly so ; also a marginal 

 row of angulate lunar marks ; anterior base and anal angle bright yellow. 



" Underside : fore wing as in the upperside, but the white markings more clearly defined, those 

 near the anterior angle being yellowish ; hind wing with the dark colour broader, and the 

 white spaces nearly covered with yellow. Shape of wings as in P. helltdonna. 



"Expanse 3^ iu. Darjeeling." {Moore, Cat. Lep. E. I. C.) 



This species is represeated in China by two very distinct local races which 

 I describe as follows : — 



Yar. subnubila, var. nov. (Plate XXXVII. figs. 7 cJ , 8 5 .) Male. Primaries heavily 

 suffused with black ; there are some elongate internervular patches of the ground-colour on 

 the central area, and a streak iu submedian interspace ; marginal spots whitish and tri- 

 angular. Secondaries whitish suffused with blackish, the ground-colour showing as inter- 

 nervular patches and a streak in the cell ; abdominal margin broadly whitish merging into 

 bright yellow towards anal angle. Under surface as iu the type, bi;t there is less white on 

 primaries. 



Female. Darker ; markings on secondaries tinged with yellow, and with the exception of a 

 yellowish streak on its outer edge the abdominal margin is entirely whitish. 



Occurs at Moupin, Huang- mu-chang, and Pu-tsu-fong, Western China, in 

 July and August. 



Var. adelma, Mitis*. (Plate XXXVII. figs. 5 , 6 $ .) Male. Black with greyish streaks iu 

 the cell and between the nervules on all the wings ; the marginal spots are greyish and smaller 

 than in var. subnubila. Under surface similar to that of var. subnubila, but there is less white 

 in the markiugs. 



Female. Brownish black ; the abdominal margin is broadly whitish tinged outwardly with 

 yellowish. 



Occurs at Chang-yang, Central China, in June and July. 



D. snnaca appears to be even more variable than D. belladonna. Some 



* Seeing that Herr Mitis had recently described two forms of D. belladonna from China, I sent 

 him a proof impression of my Plate XXXVII., asking him to be good enough to say if either of the 

 figures thereon agreed witla the specimens he had named and described. In reply I am informed 

 that figures 5 and (J represent D. belladonna, var. adelma, Mitis, and that figures 3 and 4 agree 

 with D. belladonna, var. zdima. Herr Mitis is certainly in error in referring var. adelma to D. 

 belladonna, as it is undoubtedly a form of D. sanaca, whichmay bo readily seeu by the shape of 

 the yellow discoidal streak on under surface of secondaries. 



