only a few general notes were advanced (vide Kelley and 
Bonavia, 1963; Mangelsdorf and Camara-Hernandez, 1967), 
which are now being complemented with the present technical 
report on the botanical material. 
The present report, nevertheless, is a preliminary one. The 
work at Huarmey has not been concluded, and a final and more 
thorough study is in preparation. 
Up to this time, the site appears in the scientific literature 
with the denomination of Huarmey North 1, because a name 
was not known for that site. From now on we will call it Los 
Gavilanes, an old toponimic which the dwellers of the locality 
recall and its code will be PV35-1, according to Rowe’s nomen- 
clature. 
The locality of Huarmey is in the Valley of Huarmey, which 
is in the Department of Ancash, Province of Casma, District of 
Huarmey in the North Central Coast of Peru. The archaeologi- 
cal site which is being described is located in the lower part of 
the Valley, exactly at 78°10'21’’ longitude West and 10°02'45”’ 
latitude South. The site, which was originally located by Ed- 
ward Lanning, was a subject of interest of David H. Kelley, 
who made some test pits in the years 1957 and 1958. At the 
request of Paul C. Mangelsdorf, who at that time was Director 
of the Botanical Museum of Harvard University, in the year 
1960 Duccio Bonavia excavated two stratigraphic cuts at the 
site and returned to it on numerous occasions in order to effect 
further observations. However, it is only in 1974 that Bonavia 
was able to make a more detailed and thorough work, still 
regarded as preliminary, on account of the size of the site and 
the complexity that it represents. 
This site is located in a sandy area, removed from the culti- 
vated area of the Valley, and a small range of hills separated it 
from the sea, while in its northern limit the remains of a fossil 
lagoon can be traced. This lagoon was formed on the bed of an 
ancient river, which is now dry and as a consequence of the 
conformation of ocean beach lines. 
The site is totally covered by a layer of eolic sand and on its 
surface can be observed patterns of a series of structures, 
apparently circular, whose function is not yet clear. No ceram- 
ics are present on the surface, while lithic material is easily 
one 
