Oll die larvae and pupae of some Nymphalinae 



and Heliconinae^). 



(Letter to Mr. Meldola.) 



The Secretary read the following extract from a letter from Dr. Fritz Müller 

 to Mr. R. Meldola: — 



"My brother, Dr. Wilhelm Müller, a young man of twenty-seven years of 

 age, has been with me for nearly a year, and is at present diligently studying 

 the larvae of our Nymplialince. He is likely to make some very interesting ob- 

 servations, and has already reared a considerable number from the egg to the 

 pupa. We now know the larvae of the following genera of Nymplialince: — 

 Protogoiiius, Paphia, Siderone, Prepona , Apatura (?; imago not yet bred), 

 Ageronia (five species), Myscelia, Epicalia, Didonis, Callicore (?; imago not yet 

 bred), Gyncecia, Heterochroa (ten species), Smyrna, Victorina, Junonia, Phyciodes, 

 Hypanartia, and Pyrameis. We also know the larvae of Dione and Colcenis ; 

 but these genera do not belong to the Nymphalinm, but are allied to Eueides 

 and Heliconius. 



"The larvae of several genera or even groups of genera of Brazilian Lepi- 

 doptera are confined to allied plants. Thus all our species of Heliconius (two), 

 Eueides (two), Colcenis (two), and Dione (two), feed upon Passiflorm ; Phyciodes, 

 Anartia, Junonia, and Victorina on Acanthacece; our five species of Ageronia 

 and Myscelia Orsis feed upon one and the same species of Dalechampia; our 

 species of Epicalia and Didonis feed upon Alchornea and Tragia respectively, 

 plants belonging to the same family (Euphorbiaceo') , and our two species of 

 Siderone feed upon the same Casearia. On the other hand, larvae belonging to 

 other genera feed on plants belonging to very different families. Thus some of 

 the species of Paphia feed on Piperacece (like Protogonius), and others on Lattri- 

 necB; those of Prepona feed on Leguminosce (Juga), Monimice, &c.; the larvae of 

 Heterochroa feed on Rubiacece (five species), Cecropia (two species), Melastomece 

 (one species), Rubus (one species), and Malpighiacece (one species on Tetrapterys). 



"Many young larvae of the genera Protogonius, Paphia, Siderone, Prepona, 

 Ageronia (except the gregarious larvae of A. Amphinome and A. Fornax), Mys- 



1) Proc. Em. Soc. London 1884. p. XXIII— XXIV. 



