4^8 Professor E. B. Poulton on 



Very beautiful drawings of both surfaces of the liippo- 

 coon, F., parent of Family 4 and of an example of each 

 mimetic form among its female offspring, as well as of 

 their Danaine models, have been made by my friend Mrs. 

 P. P. Wlielpley. I desire to express my warm thanks to 

 her for this beautiful work and the great care and skill 

 required for its production. Mr. Abbott H. Thayer, who 

 saw the painting, assured me that the colouring was as 

 perfect as it could be made. Messrs. Andre & Sleigh 

 have devoted great pains to Plate XXIII, containing a 

 reproduction of the jminting on the reduced scale which 

 was v;nfortunately necessary. The Danaine models were 

 all captured by my kind friend Mr. G. A. K. Marshall 

 within a few miles of the localities where Mr. Leiiih took 

 the parents of these families. 



Hereditary influence upon the details of pattern is 

 especially well studied in Family 5, of which all the signi- 

 ficant members are reproduced in half tone on Plate 

 XXIV, prepared by Messrs. Witherby from a beautiful 

 photograph by Mr. Alfred Robinson of the Oxford 

 University Museum. 



Section I 



Hereditary relationship of the female forms of 

 P. dardanus, sucsp. cenea, at Durban. 



The one striking result which is evident on a glance at 

 the table on p. 429, is the predominance of the ccnca female 

 form in the offspring of each of these families. Whether 

 the parent be cenca itself or the very different liippocoon 

 or tro2)ho7iius, cenea is invariably most, numerously repre- 

 sented in the offspring. In two cases no other form 

 appeared, and in two more only a single example of 

 another form. 



The results obtained by breeding from cenea are very 

 concordant — in both cases a vast preponderance of cenea, 

 and in one case 1, in another 3 examples of Mppo- 

 coon. When irophonnis was the parent only very small 

 numbers of offspring were reared, but the results are con- 

 cordant : — only ccnca when the numbers are very small ; 

 ccnca with a single troplwnius when they are larger. The 

 results yielded by hippocoon were, on the other hand, 

 astonishingly different : — in one case only cenea, in the 

 other the highly remarkable Family 4 with a larger pro- 



