Report on the Raphitomidae Bellardi, 1875 (Mollusca: Gastropoda: Conoidea) from the China Seas Author Li, Baoquan Yantai Institute of Coastal Zone Research, Chinese Academy of Science, Yantai, PR China; Author Li, Xinzheng Institute of Oceanology, Chinese Academy of Sciences, Qingdao, PR China text Journal of Natural History 2014 2014-03-10 48 17 999 1025 journal article 21046 10.1080/00222933.2013.861939 31283f24-de4e-4e42-a292-6c43c8107a6f 1464-5262 4006801 Eucyclotoma sp. ( Figure 1H ) Material examined Xisha Is. 1 spec , CN 58 M-1542-1, Shu Island ( Xisha Is. ), 3 May 1958 . Description Shell oblong, rather thick and solid, 12.9 mm in length, 5.6 in width and 5.9 in aperture, with wide, sinuous aperture, expanded basally, base of columella slightly foreshortened; siphonal canal wide, deep and rounded, not indented; suture distinct, narrow but deep. Outer lip thickened, with coarse nodules edge; anal sinus openly and widely concave, parietal pad thickening of outer lip. Overall sculpture of dense spiral ridges, rendered cancellate and granulose by crossing of even denser axial ribs, spiral ridges different in thickness, two to three stronger spiral ridges in penultimate whorls, about three fine spiral ridges in the interval of two stronger spiral ridges, while, six stronger spiral ridges in the body whorl, and three to five fine spiral whorls in interval zone; axial ribs dense, narrow, suture to suture, about 20 in later whorls. Whorls six, early whorls with sub-median angle by strong spiral ridges, body whorl evenly convex. Protoconch rounded, smooth. Off-white, stained with brown. Distribution Only known from Xisha Is., SCS, China . Remarks The species is very similar to Eucyclotoma varicifera (Pease, 1868) in shell profile and cancellate, granulose sculpture, but differs from the latter by the thicker shell, while the holotype of E. varicifera is thin and slightly translucent.