Cyclotropis carinata (Lea, 1856)
Lea (1857) original descriptions on Assiminea carinata – “Testa regulariter conicâ, luteâ, vittatâ, subcrassâ umbilicata, laevi; spirà ad apicera acutâ; suturis paulisper impressis, infrâ lineatis; anfractibus instar septenis, planulatis; aperturâ ellipticâ, subcanuliculatâ, iutus vittatâ; umbilico spiraliter carinato; columellâ incurvatâ ad basim subangulatâ.”
Brandt (1974) descriptions on Cyclotropis carinata – “Shell rather large with pointed apex and regularly conic spire. The whorls are almost flat and separated by a shallow, marginate suture. The 1 or 2 spiral bands around the open umbilicus are continuous, those on the periphery and below the suture are dissolved into brown patches. The colour of the periderm is opaque, that of the bands chestnut-brown. The umbilicus is surrounded by a sharp keel. There are no spiral threads or lines. Aperture and operculum typical.”
“The animal is grey with few black pigment spots dusted over head and back. Above the eyestalks are clusters of whitish pigment spots. The eyestalks are short, somewhat tapering towards the tip on which the eyes are placed. Foot truncate in front and rounded behind. The rostrum is broad and flap-like and shows a distinct notch in the middle of the anterior end.” (Brandt, 1974)
“Radula with rounded rhachis without basal cusps. There are 2 or 3 cusps on either side of the central cusp on the cutting edge. No accessory plates were found; laterals with the formula 2-1-4, inner marginals with 8, outer marginals with numerous cusps.” (Brandt, 1974)
Cyclotropis carinata – “Size: A 7-10 mm; D 4-5 mm.” (Brandt, 1974)
Type locality – “Siam” leg. S. R. House (Lea, 1857)
Distribution – “Tidal area of the coasts of Thailand, S. Vietnam, Malaysia, Sumatra, Java and Borneo.” (Brandt, 1974)
“This species lives amphibiously on plants above the surface or only submerged.” (Brandt, 1974)
“It feeds on fresh vegetation but also on decaying organic matter.” (Brandt, 1974)