4 
Indiana University Studies 
were found : Mugil rammelshergi and Basilichthys semotilus. 
Both species had been reported by Steindachner. 
On the way to Puno on Lake Titicaca a stop was made- at 
Sumbay, altitude about 13,500 feet. A tributary of the river 
Chili flows here in a very narrow, rock-lined gorge. An at- 
tempt to poison the river gave no results. On July 1, I joined 
the Mulford Expedition in La Paz. 
1. Rapids of the Rio Bopi below Espia 
Descending hurriedly the eastern slope of the Andes by 
way of Eucalyptus, Quime, Suri, and Cahamina, the first fish- 
ing w r as done at Espia, altitude 3,080 feet. Espia, a place in 
name only, is at the junction of the La Paz and Miguiila 
rivers to form the Rio Bopi. 5 With great difficulty balsa 
rafts can be brought up thru the rapids to this point during 
the dry season, June to October. High and turbulent waters 
in the rainy season prevent balsa navigation. 
Eight species of fishes were taken at Espia. Of these three 
5 Markham, Proc. Royal Geog. Soc., No. VI, June, 1883, published a map of this 
region from the original surveys of Dr. E. Heath. Another map is now going thru the 
press for the American Geographical Society. 
