Popis
Autor: Jan Delsing
Text ID: 80980
Text Type: 1
Page: 0
Založeno: 11.11.2015 16:25:24 - Uživatel Delsing Jan
Language: EN
Odkazová funkce: [[t:605623,textblock=80980,elang=EN;Popis]]
Shell small, solid, biconical. Colour uniform pale buff. Whorls seven. Protoconch of two small smooth helicoid whorls. Sculpture: First adult whorl with numerous small radial riblets; on subsequent whorls the ribs are spaced seven to a whorl; they are continuous, perpendicular, and elevated ; the spirals are prominent cords which project at the intersection of the ribs, two on the upper whorls and twelve on the last one, evenly distributed from the shoulder to the anterior extremity. Aperture: Mouth narrow ; varix broad and high, of the same calibre as the ribs; sinus small and shallow ; within the aperture is a small denticule at each side of the sinus, and a small deeply-seated fold on the columella; canal short and wide. Length 4 mm., breadth 1.5 mm.
Hedley, 1922. Original description
Možné záměny
Autor: Jan Delsing
Text ID: 80982
Text Type: 19
Page: 0
Založeno: 11.11.2015 16:26:45 - Uživatel Delsing Jan
Language: EN
Odkazová funkce: [[t:605623,textblock=80982,elang=EN;Možné záměny]]
In general appearance, by short stature and conspicuous spirals, this form recedes from typical Pseudorhaphitoma towards Heterocithara.