My male Psammophis (about 130 cm TL, origin unknown) looks exactly like this one; other features are one thin line on each side of the otherwise plain, cream-yellow underside. He was sold to me as a sibilans by a keeper who bears a particular interest in the tribe Psammophiini. It sould be mentioned, however, that the female - admittedly same species - is patternless but for the (attenuated) black speckling on the back. I have also to mention a reliable book about snakes of Western and Central Africa, reading that sibilans would not occur in Ghana...

The black snake is a Thrasops.

Best regards,

Benjamin