You have to scan up and down to see al the species...
https://books.google.ca/books?id=JM1SDwAAQBAJ&pg=PT520&lpg=PT520&dq=chameleon+tarsal+spurs&source=bl&ots=RKioCEzivL&sig=ACfU3U0R3ap21NGuof3mjuKtxF_mNiT5gA&hl=en&sa=X&ved=2ahUKEwj6zce72s_oAhUJac0KHXt5A9sQ6AEwFnoECAMQAQ#v=onepage&q=chameleon tarsal spurs&f=false
One more...
http://reptile-database.reptarium.cz/species?genus=Chamaeleo&species=chamaeleon
Common chameleon of southern Italy...
https://www.tandfonline.com/doi/full/10.1080/11250003.2016.1186236
https://books.google.ca/books?id=JM1SDwAAQBAJ&pg=PT520&lpg=PT520&dq=chameleon+tarsal+spurs&source=bl&ots=RKioCEzivL&sig=ACfU3U0R3ap21NGuof3mjuKtxF_mNiT5gA&hl=en&sa=X&ved=2ahUKEwj6zce72s_oAhUJac0KHXt5A9sQ6AEwFnoECAMQAQ#v=onepage&q=chameleon tarsal spurs&f=false
One more...
http://reptile-database.reptarium.cz/species?genus=Chamaeleo&species=chamaeleon
Common chameleon of southern Italy...
https://www.tandfonline.com/doi/full/10.1080/11250003.2016.1186236
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