Ampullaria globosa var. minor Nevill, 1877

Tripathy, Basudev, Sajan, Sheikh & Cowie, Robert H., 2019, Illustrated catalogue of types of Ampullariidae Gray, 1824 (Mollusca, Gastropoda) in the National Zoological Collection of the Zoological Survey of India, with lectotype designations, Zoosystematics and Evolution 96 (1), pp. 1-23 : 1

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.

Figures

Figure 8. Lectotype of Ampullaria globosa var. minor Nevill, 1877; NZSI M. 2445.

Figure 14. Collection labels. Ampullaria globosa var. minor Nevill, 1877; NZSI M. 2445.