THE ENTOMOLOGIST. 
Vou. XIIL.] SEPTEMBER, 1880. [No. 208. 
THE BUTTERFLIES OF PARAGUAY, AND LA PLATA. 
By POEL. Gossr, E-R.S- 
(WITH A COLOURED PLATE). 
For some time past I have been receiving from extra-tropical 
regions of South America, collections of Butterflies made by my 
friends, the MM. Richard, William, and Thomas Perrens, young 
Englishmen settled on Estancias on the W. bank of the River 
Corrientes, in the Province of the same name, in the Argentine 
Republic. One or other of them occasionally makes long 
journeys into the neighbouring State of Paraguay, and always 
uses his opportunities as a diligent entomologist. Latterly they 
have favoured me with brief notes of habits, seasons, localities, &c. 
The results I embody in the following List of species, which is, 
indeed, a double list, since I distinguish, in every case, the patrial 
habitat. This may be described as—l. South of the great 
westerly bend of the River Parana, to 30° S. lat. = Corrientes ; 
2. North of that bend, to 24° S. = Paraguay. 
I venture to hope that these Lists and Notes of Butterflies 
(Hesperidis omissis) may possess some interest for English 
‘Entomologists. 
PAPILIONID. 
Papilio Polydamas, Linn. Near Asuncion. Dec. to March. 
At edges of woods: not uncommon. I receive Polydamas from 
Jamaica, from Pernambuco in Brazil, from Paraguay, and from 
Corrientes. There are peculiarities in the last-named, which I 
do not see in the others. On the upper surface of the hind wings 
the yellow band has much more the character of an even-edged 
broad ribbon, than a series of arched spots. On the under surface 
2c 
