| The single family Apodidae contains only two genera, Apus and its very near neighbour Lepidurus. |
| As already frequently stated, Apus and Branchipus are the two living arthropods which most nearly resemble the extinct trilobites. |
| The maxill of Apus are also much the more specialized and reduced. |
| The trunk limbs of Apus are supposed to be the most primitive among the Branchiopoda, and comparison will be made with them. |
| Food composition of the endemic Plain Swift Apus unicolor in the Canary Islands. |
| So serious is this heat that it can distort a major APUS engine component, the rotor shaft, and cause significant damage. |
