432 Dr. A. G. Butler on new African Pierinse 



secondaries bright lemon yellow with a marginal series of cordiform 

 dark brown spots terminating the nervures ; primaries below 

 ochreous with pale creamy costa, the cell suffused with saffron to- 

 wards the base, but not abruptly ; subapical grey band obsolete, 

 marginal black spots smaller than above, fringe black ; secondaries 

 butter yellow with deep saffron basi-costal area ; spots on margin 

 as above ; pectus creamy yellow ; abdomen flesh-tinted. Expanse, 

 59 millim. 



Hob. ANGOLA (Coll. Hewitson) . 



This is so strikingly distinct from everything else in the 

 genus that I do not hesitate to name it in spite of the fact 

 that it is a female; the male will probably be found to have 

 a broad blackish border to the primaries. In the genus 

 Belenois, of which I have recently completed the arrange- 

 ment, the seasonal forms are always tolerably well-defined. 

 Belenois, though nearly related to Phrissura, has a different 

 style of marking ; the males never have a pencil of hair 

 between the anal clasps as have those of Phrissura ; the 

 primaries as a rule are more produced, the costa being 

 longer, so that the wing-outline more nearly resembles that 

 of Appias ; there are however exceptions to this rule in a 

 few specimens which more nearly approach Phrissura in 

 outline. A few notes on some of the seasonal forms in 

 Belenois may perhaps be useful to the systematist ; they 

 follow the usual rules of variation which have, in many 

 cases, been more or less satisfactorily proved by collectors 

 and breeders of Pierinse ; so that there can be no reason for 

 refusing to accept them as facts. If they are rejected as 

 seasonal forms, they must be accepted as variations, inas- 

 much as (in nearly every case) the intermediate phase occurs. 



Belenois hedyle, Cramer. 



This is a wet-season phase, of which B. rhena is the 

 female of the dry phase. In the Museum there are six 

 males and one female of the wet phase in addition to five 

 examples in the Hewitson collection ; of a perfectly inter- 

 mediate phase we have five males ; of the dry phase we 

 have three males and two females, one additional example 

 being in the Hewitson collection. 



Belenois thysa, HopfT. 



The Angolan form of this species differs somewhat from 

 the more Southern and the Eastern type of the species, 



