Diplommatina goliath Vermeulen, 1996
“About half-way the continuation of the columellaris into the tuba has a slight notch in its crest. All other Bomean Diplommatina are distinctly smaller: shell 8 mm high at most. Diplommatina adversa (H. & A. Adams, 1851) is most similar, but has three longitudinal palatales.” (Vermeulen, 1996)
Vermeulen (1996) original descriptions on Diplommatina goliath – “Shell sinistral, fusiform, last two whorls widest; sides flat or slighdy convex. Whorls 6 3/8-6 7/8, slightly convex. Suture impressed. Constriction level with the parietal side of the peristome, with 1 parietalis, 2 longitudinal palatales, 1 transversal palatalis, 1 columellaris. Tuba 3/4 whorl. Radial ribs, often absent on the top whorls, not sinuous, low, thin, moderately spaced (3-7 ribs/0.5 mm on the penultimate whorl). Spiral striation absent. Umbilicus closed. Aperture hardly tilted with regard to the coiling axis; columellaris distinct, directed downwards. Peristome simple, widely expanding, palatal side not sinuous, without edge; basal edge not sinuous, rounded; peristome with a palatal lip, expanding but free and slightly erect on the columellar side, expanding (almost) up to the suture of the previous whorl on the parietal side.”
Diplommatina goliath – “Height 10.0-11.5 mm; width 4.3-5.0 mm; index 2.2-2.5. Height aperture 2.9-3.2 mm; width 2.9-3.3 mm.” (Vermeulen, 1996)
Type locality – “Borneo. Sarawak. 1st Div.: limestone hill mile NE of Pangkalan Ampat, 0.5 mile E of Temerang” leg. Wilford (Vermeulen, 1996)
Other localities – “Borneo. Sarawak. 1st Div.: G. Braang, NW foot, 22 miles S. of Kuching” leg. Wilford (Vermeulen, 1996); “Borneo. Sarawak. 1st Div.: G. Gayu 23 miles S. of Kuching” leg. Wilford (Vermeulen, 1996); “Borneo. Sarawak. 1st Div.: G. Saak 1 mile W. of Begu, 24 miles S. of Kuching” leg. Wilford (Vermeulen, 1996)