Ampullaria globosa var. minor Nevill, 1877 Figs 8, 14

Ampullaria globosa var. minor Nevill, 1877. Cat. Moll. Ind. Mus. Fasc. E: 4.

Current taxonomic status.

Pila globosa (Swainson, 1822), junior synonym.

Type locality.

"near Dum-Dum, Calcutta" [= Dumdum, Kolkata, West Bengal, India] (Prashad 1925: 74: pl. 13, fig. 8); Major L. W. Wilmer, leg.

Type material.

Lectotype, by designation of Prashad (1925: 74: pl. 13, fig. 8): NZSI M.2445 (registered 10 January 1894). Paralectotypes: NZSI M.25082/5 (registered 24 September 2001, 2 spms); 7 additional specimens noted by Nevill (1877: 4), not found in NZSI in 2014 (Cowie 2015: 52).

Shell dimensions.

Lectotype: SH 35.6 mm, SW 29.9 mm, AH 25.1 mm, AW 19.6 mm. Paralectotypes: SH 27.0, 33.2 mm, SW 24.4, 27.7 mm, AH 20.3, 23.0 mm, AW 16.3, 18.9 mm.

Remarks.

Nevill (1877: 4; 1885: 2) listed eight specimens from "Near Dum-Dum" collected by Major L. W. Wilmer and two specimens from “Siliguri” collected by Colonel G. B. Mainwaring. Prashad (1925: 74, pl. 13, fig. 8) subsequently unambiguously selected one of the syntypes from Dumdum as the “Type-specimen”, thereby designating the lectotype and restricting the type locality, as above (Cowie 2015: 42). Only two paralectotypes were found in NZSI in 2014. Nevill (1877: 4) considered the shell to be almost intermediate between A. globosa and A. maura but Prashad (1925: 74) considered it "as closely allied to P. conica ". It does not seem appropriate to treat it as a distinct subspecies (Code, Art 45.6.4), and therefore, following Cowie (2015: 42), who followed Prashad (1923: 587), we here treat it as a junior synonym of Ampullaria globosa Swainson.