428 Professor E. B. Poulton on 



Very beautiful drawings of both surfaces of the hij^po- 

 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. Whelpley. I desire to express my warm thanks to 

 her for this beautiful work and tlie great care and skill 

 reipiired 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 painting on the reduced scale which 

 was unfortunately necessary. The Danaiue models were 

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

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

 the parents of these I'amilies. 



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, sul'.sp. cenea, at durban. 



The one striking result which is evident on a glance at 

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

 form in the offspring of each of these families. Whether 

 the parent be ecncn itself or the very different ]iip2:iocoon 

 or tro2)honius, ccnea 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 ccnea are very 

 concordant — in both cases a vast preponderance of cenea, 

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

 coon. When troplionins was the parent only very small 

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

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

 cenea with a single to'ophonius when they are larger. The 

 results yielded by Mppocoon were, on the other hand, 

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

 other the highly remarkable Family 4 with a larger pro- 



