Cinnabarine: [vermilion red].
Cinnamomeous: cinnamon brown [burnt sienna].
Cinema: see Thysanura, of which this forms a group including the bristle-tails, and for which it has been used as an equivalent.
Circinal: spirally rolled like a watch-spring or a butterfly tongue.
Circiter: about, or round-about.
Circular: round like a circle.
Circumgenital glands: small circular glands with an excretory orifice at tip, disposed in groups about the genital orifice in Diaspinae.
Circumoesophageal commissures: those cords or nerve fibres connecting the suboesophageal ganglion with the main trunk of nervous system.
Circumsepted: with a vein all around the wing.
Citrate: antennae with very long, curled lateral branches which may or may not be ciliated; see plumose.