This page covers folk instruments of Portugal and Spain and their former colonies.

Bandola

Bandolin

There are several instruments called bandolin, but the Equatorian bandolin with five triple courses is the normal meaning.

Banduria

The banduria or bandurria is a steel-stringed, twelve-stringed instrument, part lute and part guitar, in six double courses  A version used in the Philippines has fourteen strings, while the baroque version had ten gut strings. Nylon string versions also still exist. There are varieties of banduria by the names of laud, Cuban laud, laudón, tenor lute and bass lute.

Cavaquinho

Guitarron

http://www.juststrings.com/guitarron.html

Requinto

http://www.juststrings.com/requinto.html

Sistil

http://www.juststrings.com/sistil.html

http://larkinthemorning.com/product.asp?pn=MIS106&ss=sistil

http://en.wikipedia.org/wiki/Sistil

Tres