(..cxx } 
“These butterflies were caught in Brazil this year, during 
the last week of January and the first week of February, but 
as I was there on other business time was very limited for 
collecting. Also I am a novice in the art and am indebted to 
Prof. Poulton for the following facts. 
“The larger swallowtail, which is the model, is Papilio 
chamissoma f{. chamissoma, Eschsch., belonging to Section I of 
the great Papilio group, called ‘ Aristolochia Swallowtails,’ 
Roths. and Jord., or ‘ Pharmacophagus Swallowtails,’ Haase. 
“The smaller one, mimicking the larger in almost every 
detail, is Papilio (Cosmodesmus) lysithous, f. lysithous, Hibn., 
and belongs to Section III, known as ‘Kite Swallowtails,’ 
Roths. and Jord., or ‘ Cosmodesmus Swallowtails,’ Haase. 
“ The city of Sao Paulo lies about 2,500 ft. above the sea 
in a country of hill and forest. The immediate surroundings 
of the town are cleared, and large areas are partially mapped 
out for future building. It was on this at present waste and 
undeveloped land that I caught the swallowtails and other 
butterflies. The gardens and houses of the finished streets 
were on the upper side of a large open space sloping downwards 
into the country, and the trees were mostly in the gardens. 
One tree particularly, Vochysia tuscanorum, M. and G., with 
its mass of golden blossom, was most attractive to butterflies, 
and it was in that neighbourhood that I did most of my 
catching. These particular swallowtails were by far the 
commonest things on the wing. They would hover high up 
round the yellow blossoms and then fly down and out into the 
more open ground. They seldom settled, but fluttered slowly 
and rather sleepily so that they were easy to catch. Un- 
fortunately at the time I did not know I had a case of mimicry 
under my eyes or I should have taken more trouble to make 
exact observations. 
“On January 31, I caught two specimens of P. lysithous, 
on February 2, three of P. chamissonia, and on February 4, 
two of each species. My impression is that the numbers flying 
were usually about equal. I should say the mimics were 
quicker and more alert flyers, but both kinds were easy to 
catch, and very common. They often annoyed me, too, by 
‘ resurrecting.’ I always pinched the thorax and then put 
