3S8 Mr. G. T. Betliune-Bakcr on 



races or constant varieties would without doubt keep tlie 

 four forms separate with tlieir individual names. 



The authors, however, state in their })reanible to the 

 .cpecies : " The original descriptions and plates provide some 

 evidence tiiat the tj'pe examples . . . came from Moreton Bay 

 (lirisbane) ; the type is purple with distinct black margins. 

 The type iemale (Hewitson's Oyi/ns geiwveva) is described 

 as blue, but figured as green." This is pure guess-work on 

 their part. We have no evidence at all that the original 

 three species come from Mor»ton Bay ; in fac^t, we have rather 

 evidence to the contrary, for when, years later on, he 

 (Hewitson) received a specimen from that district he 

 definitely so labelled it and gave exact localities (as, Swan 

 Eiver) whenever possible. Hewitson's type male has dark 

 margins (not black), but by no means distinct on their inner 

 edge and the j)urple is very dull in tone. The type female is 

 the same colour as the male ; this, as already mentioned, I 

 stk'Cted in my monograph in 1906, and our authors have not 

 the power or right with a stroke of their pen to alter that 

 selection — as firstreviser, my selection must stand. Hewitson's 

 original material, dealt with in his Exot. Butterflies, con- 

 sisted of a pair ( (^ and ? ) of the dull purple form, and a 

 bright |jale blue $ (the genoveva ? ). I have made a special 

 search at the British Museum (Natural History), and there 

 is not any evidence whatever to enable us to say from what 

 part of Australia those specimens came ; the pur})le ? is 

 apparently identical with what Waterhouse and Lyell have 

 renamed tijphon iberia, which therefore must sink as a 

 synonym to zosine zosine, as I had already restricted the 

 type $ to that form. Subsequently, Hewitson received 

 another male specimen from Moreton Bay (it is labelled in his 

 own handwriting). There can be no doubt that he (Hewitson) 

 knew exactly what he was doing when he described the 

 species. He had a male and female, dull purple, which 

 he called zosine, and he had a second female very pale 

 lustrous blue, which he thought was another species and 

 which he called ^e«oyeya. This he indicates in his letterpress, 

 so that, when I selected the adult pur|)le female as the type 

 female form of zosine zosine, I was not only acting legiti- 

 mately, but I was carrying out the original intention of .the 

 firtit describer of the species; and it is contrary to the Code 

 for a subsequent author to nullify the selection, and would 

 also be very detrimental to progress. Taking up now the 

 forms Waterhouse and Lyell mention, we have : — 



