Clypeomorus tjilonganensis (K. Martin 1899)

Clypeomorus tjilonganensis (K. Martin)

Cerithium (s. str.) tjilonganansis [sic] K. Martin, 1899:197, pl. 31: fig. 454 [holotype: RGM 10353, 32.1 mm long; type-locality: Miocene of Selatjan, Tji Longan, Java].

Cerithium (Vulgocerithium) tjilonganense.—K. Martin, 1921: 470, pl. 3: figs. 63–64.—Cossmann, 1906:80.

DESCRIPTION (Figure 61).—Shell fat, pupiform, comprising 10 inflated whorls sculptured with 2 dominant spiral cords bearing sharp nodes and numerous finer spiral lirae, the most anterior of which is beaded. The first dominant spiral cord is anterior and adjacent to the suture and the second is on the middle of the whorl. The spinose beads are not axially aligned. Former varices are present, the largest being opposite the outer lip of the aperture. Suture distinct, somewhat wavy. Protoconch unknown. Body whorl large with numerous spiral cords, some beaded and aside from the two dominant cords, more distinct at the siphonal constriction. Columella concave with distinct plait adjacent to anal canal. Moderate columellar callus present. Outer lip unknown.

ETYMOLOGY.—Named after the type-locality, Tji Longan.