70 
i. Head rounded in 1st stadium, 7th oblique stripe 
strongly developed, Mimas tiliae. 
ii. Head variable in 1st stadium, 7th oblique stripe 
strongly developed, Smerinthus occllata. 
iii. Head triangular in 1st stadium, 1st and 7th oblique 
stripes strongly developed, Amorpha populi. 
(II.) Larva? with slightly tumid and translucent-looking thoracic 
segments in later stadia ; forked hairs ill-developed, if 
present. 
(o) With stiff-pointed curved caudal horn. 
i. Markedly forked in 1st stadium, Hyloicm pinastri. 
ii. Not markedly forked in 1st stadium, Sphinx lif/ustri. 
iii. A;/rius convolvuli. 
( b ) With peculiar downward-curved rough horn, Mamluca 
atropos. 
AN EASTER HOLIDAY IN SOUTH AMERICA. 
(Communicated by A. F. BAYNE, November 18tli, 1902.) 
I had really intended to write you before a few short notes on my 
Easter holidays this year, my ten days’ absence being to a certain ex¬ 
tent occupied with entomology, in case they might interest you. I 
left here about a week before Good Friday, and travelled via Mendoza 
to Puente del Inca. The journey from Buenos Ayres to Mendoza is a 
tedious one, taking two nights and a day, the train leaving here at 
about ten p.m. Until the middle of the next day no trace of a hill 
and hardly, even, a rise in the ground is to be seen—nothing but the 
open “ pampa ” and “lagunas” (large shallow pools), the latter 
crowded with waterfowl, swans, geese, flamingoes, with ducks and 
moorhen innumerable. On nearing Villa Mercedes, however, solitary 
“kopjes” appear, and then, in the distance, the line of the Sierras 
extending northwards towards Cordoba. On arriving at Mendoza, 
where I joined my brother Will, on the second morning, the scene 
changes, and as the sun rises you see first the foothills near the town, 
then the Uspallata range, and beyond a glimpse of Aconcagua and some 
of the other high peaks of the Andes. The Transandine from Mendoza 
to Puente del Inca is a narrow gauge line, constructed, in the steeper 
gradients, with a central toothed rail, it follows the valley of the 
Rio Mendoza, which it crosses and recrosses many times, through the 
Uspallata by a narrow gorge, and then into the main chain of the 
Cordillera. With the exception of a far off view of the high lands 
near the Brazilian coast, this was my first experience of mountains. 
1 have not been in the Alps, but the Andes between Mendoza and the 
