some British East African Btitterfiies. 503 



centred combination (see pp. 511,512). The under side is 

 of course procryptic, so that it can hardly be regarded as a 

 distasteful insect. Professor Poulton has pointed out (see 

 p. 505) that there are certain features in the markings of 

 the fore-wing which are apparently secondarily associated 

 with the Pseicdacr^ea and Eurcdim of this combination. 



1. The Relative Abundance of the memhers of the Amauris 



ochlea-centred Combination. 



The relative abundance of the members of this combina- 

 tion varies a good deal in different localities and stations, 

 as was seen to be the case with regard to the A. niavius 

 doviinicanus combination. At Rabai the two Euralias 

 predominate in the wooded country, and are even more in 

 evidence than the primary model, whilst on a tour further 

 north in the Giryama country I found F. lucrctia expansa 

 the most numerous member, especially at Mangea.* 



[^Rabai, August 29, 1908. I am sending you two 

 Euralia Icvrbyi and one Psettdacnea lucretia, taken in Dida 

 Forest, which is a large area of low dense forest, a little 

 south of Kaembeni on the way to Jilore. The Eurcdia 

 was quite common, and I netted other specimens which 

 were not good enough to keep, but for the Avhole distance, 

 some 8 miles, I never saw Amauris ochlea at all. In fact, 

 I have found that both the Amauris are more local than the 

 Euralias, though very abundant in places. Moreover, I 

 have seldom seen them flying with either the Euralia or 

 the Pseudacrma, which is of considerable interest in view 

 of the fact that the mimics resemble each other more 

 closely in some respects than either does the primary 

 Danaine model.] 



2. Secondary Resemblance betiveen the Ni/mphaline members 

 of the Amauris ochlea-centred Combincdion. E. B. P. 



I have been much struck with the apparently strong 

 secondary likeness between Pseudacraia lucrctia expansa, 

 Eurcdia deceptor, and E. hirbyi so often taken by the 



* [A considerable number of the members of this and the domini- 

 c«n?<s-centred combination from Coast localities N. of Rabai, and 

 also from Taveta, and a few from Taita and Kilimanjaro, have been 

 presented by the author to the Hope Department. It has not been 

 thought necessary to tabulate them in view of the more complete 

 records from Rabai printed on p. 496 ; but it is well to point out 

 that these specimens from additional localities also afford strong 

 evidence that the species occur at the same places and are often seen 

 upon the wing together. E. B. P.] 



