( 488 ) 
nearly a month’s time, shortly after which the whole party started 
back for La Paz by way of the Pelechuco Pass and Puno on Lake 
Titicaca. The town of Pelichuco, situated at an altitude of 11,500 
ft. seemed to be in one of the finest regions for botanical collecting 
noted on the entire trip, but owing to lack of time and necessary 
outfit but comparatively few specimens were obtained. La Paz 
was reached the second time near the end of May, 1902, when the 
party broke up. Dr. Evans returned to London by way of the 
Amazon, Mr. Whatney crossed Peru to the coast and up to Panama 
by the route we had entered, while Mr. Turle and the writer re- 
turned to Apolo at the request of the company, where we remained 
until September. On this second trip to the interior we went from 
La Paz to Sorata as before, but after leaving that place kept some- 
what to the left of our first route and quite near to the Sorata 
river, passing through the towns of Tacacoma and Consata and 
striking the Mapiri-Apolo trail some fifteen miles from Mapiri, at 
Achiquiri. Reaching Apolo the second time, June 20, we remained 
until about the middle of September, exploring the adjacent region, 
especially that about Aten to the southwest and Santa Cruz to 
the northward. September 13 we again started for La Paz by 
way of the Sorata~-Mapiri trail, over roads already essentially 
traversed. The altitudes given are largely estimates to be con- 
sidered as only approximately correct 
R. S. Witirams. 
List of Species 
BroMELIACEAE 
Pitcairnia robusta sp. nov. 
Thinly ai stem ae stout, leafy; leaves reaching 7 dm 
wae 15-18 mm. broa — the bas se, ae ng thence ieee 
clasping bases; bracts of the eee very broadly ovate, acuminate, 
strongly many-nerved, the margin finely ene rachis 
long, very stout, purple, bearing about 10 branches on each side, 
these abou 5-8 cm. long, stout and about 8~12-flowered; bracts 
of the flowers 12-15 mm. bee broadly ovate, acute, thick and 
rigid, keeled and coarsely nerved; sepals 2 cm. long, very thick 
and rigid, keeled and strongly nerved, acuminate; withered remains 
of the corolla exceeding the calyx b 6 mm. capsule 1 
8 mm. broad, splitting at length into 6 ae recs lanceolate, 
