Chmamalycaeus canaliculatus ( Moellendorff , 1894)
Alycaeus canaliculatus Möllendorff , 1894: 154-155, pl. 16, figs 22, 23.
Alycaeus (Chamalycaeus) canaliculatus - Kobelt 1902: 353.
Chamalycaeus (Chamalycaeus) canaliculatus - Zilch 1957: 142, pl. 5, fig. 4.
Dicharax canaliculatus - Páll-Gergely 2017: 25, fig. 15C.
Type locality.
"Samui Islands, Gulf of Siam" (from the title).
Material examined.
Golf von Siam: Koh-Samui, coll. Möllendorff , SMF 109468 (lectotype, designated by Zilch 1957); Same data, SMF 109469 (4 paralectotypes).
Remarks.
Protoconch low, rather matte, very finely granulated, without spiral lines; R1 densely, rather regularly ribbed, the ribs are quite sharp, there is a hardly visible spiral striation between each of the ribs; R2 short, with ribs curved towards the aperture.