Circuli should have preferred name "circulus" which is the singular form. Definition should also be changed accordingly.
def: "Fine ridges on surface of scale, often parallel to the circumference of scale." [TAO:curator]
is_a: ZFA:0001689 ! anatomical line
relationship: end ZFS:0000044 ! Adult
relationship: part_of ZFA:0000277 ! scale
relationship: start ZFS:0000000 ! Unknown