Hybrid 1 Cross
X. helleri x (X. maculatus x X.helleri)

Hybrid 4 Cross
(X. maculatus x X. andersi) x X. andersi

Hybrid 5 Cross
The Classical "Gordon-Kosswig" Crossing Scheme

Hybrid 7 Cross
X. couchianus x (X. maculatus x X. couchianus)

Hybrid 8 Cross
(X. maculatus x X. couchianus) x X. couchianus

Hybrid 9 Cross
(X. nezahualcoyotl x X. variatus) x X. nezahualcoyotl

Hybrid 10 Cross
(X. maculatus x X. andersi) x X. andersi

Hybrid 15 Cross
X. helleri x (X. helleri x X. variatus)