===========================================================+=====+===== Double Canals of Mars | | arranged according to Latitude | A | B -----------------------------------------------------------+-----+----- | | Between 30° S. and 20° S. Tithonius, Nectar, Laestrygon | 2 | 3 | | Between 20° S. and 10° S. Jamuna, Ganges, Gigas, | | Laestrygon, Cyclops, Titan, | | Tartarus, Polyphemus, Tithonius| 7 | 9 | | | | Between 10° S. and 0° Jamuna, Ganges, Gigas, | | Laestrygon, Cyclops, Cerberus | | S, Aethiops, Lethes, Amenthes, | | Triton, Phison, Euphrates, | | Titan, Tartarus, Adamas, | | Typhon, Vexillum, Asopus, | | Naarmalcha, Polyphemus | 15 | 20 | | Between 0° and 10° N. Gihon, Djihoun, Jamuna, Ganges, | | Gigas, Laestrygon, Cerberus N, | | Cyclops, Cerberus S, Eunostos, | | Aethiops, Lethes, Amenthes, | | Triton, Nepenthes, Phison, | | Euphrates, Sitacus, Hiddekel, | | Tartarus, Adamas, Asopus, | | Typhon, Vexillum, Cocytus, Is, | | Avernus N, Naarmalcha, | | Polyphemus | 21 | 29 | | Between 10° N. and 20° N. Gihon, Djihoun, Jamuna, Nilokeras| | I and II[4], Nilokeras I, Ganges,| | Gigas, Eunostos, Aethiops, | | Lethes, Amenthes, Thoth, | | Astaboras, Phison, Sitacus, | | Euphrates, Hiddekel, Adamas, | | Asopus, Gelbes, Avernus N, | | Erebus, Naarmalcha, Vexillum, | | Is, Dis | 18 | 26 | | Between 20° N. and 30° N. Gihon, Djihoun, Jamuna, | | Nilokeras I & II,[4] | |