108 Dr. Arthur G. Butler on 
that the two extremes belong to one species in which the 
border of the secondaries is sometimes lightly and some- 
times heavily marked, as in A. anacreon. As with that 
species also there are no constant differences of pattern on 
the under surface of the wings. 
(5). A. doubledayi, Guér. = A. dircra, Westw. 
Westwood’s description agrees well with the insect 
which I identified as that species, and which, I have no 
doubt, is a seasonal form of A. doubledayi. Mr. Marshall, 
however, when in England, informed me that he haa 
seen Westwood’s type and found it identical with 
A. caldarena, Hew.; this was sufficient for me, and I 
immediately altered the identification. In his paper, 
however, Mr. Marshall speaks of Westwood’s insect as a 
seasonal form of A. caldarena, which can be hardly 
possible, since Westwood says that it is “allied to Aer. 
oncea, but with a very well defined broad black apex to 
the primaries”; this exactly tallies with the form of 
A. doubledayi (=oncexa) which I identified. Of the latter 
we now have additional examples linking it to typical 
A. doubledayi beyond all question, and received in the 
same collection with the white-banded female of that 
species. Mr. Marshall’s recently published statement 
has made me feel that I should like personally to compare 
Westwood’s type both with A. caldarena and the form of 
A. doubledayi with black apex. 
(4). Acrea stenobea, Wallengr. = A. caldarena, Hew. 
Of this identifivation I never felt very certain, because 
we have a wet development of A. stenobea in A. cecilia of 
the West Coast. Both A. cxcilia and A. stenobea occur 
rather commonly in §.-W. Africa. 
When Mr. Marshall made his remarks respecting my 
“ Jamentable confusion as to what are real specific differ- 
ences in Acrza,” “the fallacy of my supposition,” etc., he 
had not had the advantage of studying our very fine series. 
Had he done so he would have discovered that A. lygus, 
Druce (= albomaculata, Weym.) was a form of A. stenobea 
varying in the direction of A. cecilia, and occurring with 
it on the Congo. Mr. ‘l'rimen’s description does not 
accurately describe it, inasmuch as the basal blackish 
suffusion is more pronounced on the forewing in typical 
A, lygus, than in any other form of that variable species, 
A. cecilia. The examples from the “ Hastern extremity 
of Cape Colony and Basutoland,” if such examples of 
