Table 1.

Geochelone nigra subspecies used in this study

Subspecies	Locality	n
becki	Isabela–Wolf	2
microphyes	Isabela–Darwin	2 (2)
vandenburghi	Isabela–Alcedo	2 (3)
guntheri	Isabela–Sierra Negra	2 (5)
vicina	Isabela–Cerro Azul	2 (10)
darwini	San Salvador	2
porteri	Santa Cruz	2
abingdoni	Pinta	4*
ephippium	Pinzón	3
chatamensis	San Cristóbal	2
hoodensis	Española	6

N refers to the number of individuals whose 16S rRNA and cytb were studied; numbers in parentheses are the number sequenced for the D loop.  

^*One sample was from a live animal and three were from skins of dead animals.