The Myidae (Mollusca, Bivalvia) from Chinese waters with description of a new species Author Zhang, Jun-Long Author Xu, Feng-Shan Author Liu, Rui-Yu text Zootaxa 2012 3383 39 60 journal article 10.5281/zenodo.281734 43dab820-4818-4933-9e7b-c15187db9fb6 1175-5326 281734 Tugonia (Tugonia) huanghaiensis Xu, 1987 Figure 6A–K Tugonia huanghaiensis Xu, 1987 : 437 –438 & 441, fig. 1a—Bernard et al. 1993: 107; Xu 1997 : 230 ; Lutaenko & Xu 2008 : 52 , text-fig. 6E, pl. 5, figs. A–D; Xu & Zhang, 2008 : 257 , fig. 815; Xu, 2008: 590. Cryptomya (Venatomya) semistriata ( Hanley 1842 ) — Huber (2010) : 766 . Material examined. MBM no.73M-030 ( Holotype ) (1 articutate shell), Jiaozhou Bay , China , collected by Qi Zhong-yan, on October 30th, 1973 ; MBM no.57M-101 (not no.56M-101 by Xu 1987 ) ( Paratype ) (1 articutate shell), in sand, Rudong, Jiangsu Province, China , collected by Ma Xiu-tong, on June 10th, 1956 . Distribution and habitat. Recent. Jiaozhou Bay , China ; Rudong, Jiangsu Province, China . Habitat unknown. Type locality. Jiaozhou Bay , China . Diagnosis. Length to 20 mm ; shell globose; umbo prominent, situated subcentral and prosogyrate; periostracum yellowish; sculpture with fine radial ribs, somewhat stronger posteriorly; posterior area incipiently rostrate, with only commarginal lines; pallial sinus not reaching further anterior than posterior adductor scar; pallial line thin or obscure. Remarks. Huber (2010) thought this species is the synonym of Cryptomya (Venatomya) semistriata ( Hanley 1842 ) . Swennen et al. (2001) recognized Tugonia semistriata ( Sowerby II, 1875 ) [sic] as a synonym of T. princeps A. Adams, 1851 . But judged from the figures by Sowerby II (1875 : pl. 2, fig. 6a, b) and Swennen et al. (2001 : p. 97, fig. 209), C (V.) semistriata has a deeper pallial sinus whereas it is diminutive in T. (T.) huanghaiensis . In addition, the ventral margin of T. (T.) huanghaiensis is much more convex than in C. (V.) semistriata , and its umbo is much larger and more inflated.