The 5th interstice has similar tubercle on posterior declivity. The additional anion vacancy resides in the tetrahedral interstice between adjacent B-site cations. Subsequently, the band recorded the EP "Shoot" (initially planned to be called "Interstice"). AHC has announced that they will additionally release an EP entitled "Interstice" through the label. The space in between where the grout goes is an interstice. An interstitial space or interstice is a space between structures or objects. The scale-like motile staminodes sandwiched by pistillate and staminate flower zones are called interstice staminodes.