Sinoennea stenopylis ( Benson, 1860 )

Páll-Gergely, Barna, Hunyadi, András, Grego, Jozef, Sajan, Sheikh, Tripathy, Basudev & Chen, Zhe-Yu, 2020, A review of the Diapheridae (Gastropoda: Eupulmonata: Streptaxoidea), with special emphasis on India and Myanmar, Raffles Bulletin of Zoology 68, pp. 682-718 : 709-710

Sinoennea stenopylis ( Benson, 1860)

Ennea stenopylis Benson, 1860: 460 .

Ennea (Huttonella) stenopylis — Nevill, 1878: 7.

Ennea (Indoennea) stenopylis — Kobelt, 1904b: 158, pl. 20, fig. 23.

Ennea stenopylis — W.T. Blanford & Godwin-Austen, 1908: 17.

Indoennea stenopylis — Peile, 1929a: fig. 7 (drawings showing the dentate juvenile shell).

Sinoennea stenopylis — Richardson, 1988: 161.

Ennea stenopylis — Ramakrishna et al., 2010: 191.

Type locality. “in vallibus Rungnu et Rimmau (alt. 4000 ped.) prope Darjiling”.

Material examined. 5 adult + 1 juvenile shells ( NHMUK 1909.3.15.90a), Khasi Hills.

Remarks. Aperture suboval, parietal callus well-developed, rounded, reaching or extending beyond half the height of the penultimate whorl. Basal swelling strong, situated relatively close to peristome. Depression between basal swelling and peristome deep and slightly elongated. Parietal lamella strong, outer part slightly bent towards columella, whereas inner part bent towards the palatal wall. Palatal wall with a ridge-like tooth that runs together with the outer part of the parietal lamella. A small denticle might present on the upper part of the palatal lamella, sitting on the base of sinulus. The lower parietal tooth is not distinguishable, it is probably part of the elongated parietal ridge. A blunt basal denticle sits in some distance from the peristome. Columellar lamella very strongly elevated, curved, sharp, deeply situated, oblique to the shell axis. Based on the aperture shape, the presence of a basal swelling behind the peristome, and the arrangement of the apertural barriers, this species belongs to Sinoennea .