378 Mr. Roland Tiiinen on 



Genus PiERitJ, Schrank. 



rieris Mesentina. 



PajJilio Mesentina, Cramer, Pap. Exot. iii. 140, pi. cclxx. 

 f. A, B (c?). 



Several males from Koro-Koro and Maseru agree in all 

 respects with specimens of the same sex from other parts 

 of South Africa. African S specimens generally, as far 

 as I have observed, differ from the Asiatic ty])e-form in 

 having all the black markings narrower and fainter (in 

 which respect they approach P. Gidica) and also, as 

 Hopffer has pointed out (Peters^ Reise nach Mossam- 

 bique, Ins. p. 352) , in having the underside of the hind- 

 wings white, or Avhitish with some few yellow streaks, 

 instead of uniformly yellow. In the ? also, the hind- 

 wings though yellow on the underside, are not of so deep 

 a tint as is general in Indian and Cingalese examples. 



Mr. Bowker notes this butterfly as '' very numerous all 

 over the country, constantly flying to the Eastward." 



Wallengren (Sv. Akad. Handl. 1857, p. 8), and Wallace 

 (Tr. Ent. Soc, 3rd ser., iv. 329) have noted, that in 

 Mesentina, Severina, and a few allied species, the first 

 subcostal nervule anastomoses with the costal nervure 

 in the fore- win f>:s. 



Pier is Hellica. 



Papilio Hellica, Linn, S. N. ii. 760. 



Specimens of this very constant and abundant species, 

 which is a near relative of P. DaiAidice, were sent by 

 Mr. Bowker from Maseru. 



I found the species to be common in the higher lands 

 of Natal, particularly near Pietermaritzburg and Grey- 

 town. In the Malmesbury division, which adjoins that 

 in which Cape Town is situate, Hellica was unusually 

 plentiful in September, 1809 ; and its abundance was 

 still greater about Port Elizabeth and Grahamstown, 

 when I visited those places in January and February, 

 1870. 



