Bulimus knorri Pfeiffer in Philippi 1846

Breure, Abraham S. H. & Ablett, Jonathan D., 2014, Annotated type catalogue of the Bulimulidae (Mollusca, Gastropoda, Orthalicoidea) in the Natural History Museum, London, ZooKeys 392, pp. 1-367 : 83

Bulimus knorri Pfeiffer in Philippi 1846 Figs 51D-F , L32iii

Bulimus knorri Pfeiffer in Philippi 1846 [1845-1847]: 115, pl. 4 fig. 3; Pfeiffer 1848b: 95; Reeve 1848 [1848-1850]: pl. 43 fig. 270.

Type locality.

"La Guayra".

Label.

"La Guayra", taxon label in Pfeiffer’s handwriting. M.C. label style I, V.

Dimensions.

"Long. 18, diam 6 ´´´ [H 39.2, D 13.1 mm]"; figured specimen herein H 34.1, D 17.1, W 6.5.

Type material.

NHMUK 20100654, three possible syntypes (Cuming coll.).

Remarks.

Pfeiffer did not describe on how many specimens his description was based. The lot found has the taxon label in Pfeiffer’s handwriting and the locality corresponds to the original one; it is not know whether this locality lies in the Colombian or Venezuelan part of La Guayra. The largest specimen is smaller than indicated in the original description; the specimens are considered as possible syntypes. Given the shell shape, and the expanded lip this taxon may be better placed in Drymaeus s. str. At species level the current systematic position is according to Richardson (1995: 187).

Current systematic position.

Bulimulidae , Drymaeus (Drymaeus) trigonostomus (Jonas, 1844) (comb.n.).

Figures

Figure 51. Drymaeus species. A-C Drymaeus (Drymaeus) expatriatus (Preston, 1909), lectotype NHMUK 1975201 (H = 28.1) D-F Drymaeus (Drymaeus) trigonostomus (Jonas, 1844), possible syntype of Bulimus knorri Pfeiffer, in Philippi, 1846 NHMUK 20100654 (H = 34.1) G-I Drymaeus (Drymaeus) fenestrellus (Martens, 1864), lectotype of Bulimus (Mesembrinus) geali H. Adams, 1867 NHMUK 1867.1.9.20 (H = 26.4) J-L Drymaeus (Drymaeus) fenestratus (Pfeiffer, 1846), lectotype NHMUK 1975525 (H = 44.0). All enlarged.

Figure L 32. Labels. i Bulimus keppelli Pfeiffer, 1853 ii Bulimus lactifluus Pfeiffer, 1857 iii Bulimus knorri Pfeiffer in Philippi 1846 iv Bulimus koppeli Sowerby III, 1892 v Bulimus laetus Reeve, 1849.