Papuina trochiformis
| Papuina trochiformis | |
|---|---|
 | |
| Original image of a shell of Papuina trochiformis | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): | clade Heterobranchia clade Euthyneura clade Panpulmonata clade Eupulmonata clade Stylommatophora informal group Sigmurethra |
| Superfamily: | Helicoidea |
| Family: | Camaenidae |
| Subfamily: | Camaeninae |
| Genus: | Papuina |
| Species: | P. trochiformis |
| Binomial name | |
| Papuina trochiformis H.B. Preston, 1903 | |
Papuina trochiformis is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Camaenidae.[1]
Distribution
The type locality for this species is described as Mafor Island, New Guinea.
Shell description
The height of the shell attains 19 mm, its maximum diameter is 23 mm, minimum diameter 19 mm; aperture: diameter 9 mm, height 9 mm.
(Original description) The conical shell has an acute spire. It contains 5-6 whorls The last is sharply keeled, the upper whorls show a much greater convexity in proportion than the last two. The suture is shallow. The aperture is oblique, having a distinct callosity, presenting a somewhat heliciniform appearance, The peristome is expanded and reflexed. The columella is stout, with a protuberance at its base. The umbilicus is very narrow, partly concealed by reflexion of the lip. The shell is striated with somewhat coarse growth lines, otherwise it is destitute of sculpture. The colourof the shell is pale whitish yellow, deepening on earlier whorls.[1]