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 Cryptomya (Cryptomya) busoensis Yokoyama, 1922 Figure 4A Cryptomya busoensis Yokoyama, 1922 : 126 , pl. 7, figs. 1 & 2— Beets, 1950 : 16 ; Habe, 1951 : 75 , pl. 12, figs. 1 & 2; Habe, 1961 : 140 , pl. 63, fig. 13; Habe, 1968 : 205 , pl. 63, fig. 13; Kuroda et al. 1971 : 704 , 463; pl. 121, fig. 7; Habe, 1977 : 279 , pl. 58, figs. 5 & 6; Xu, 1987 : 438 , fig. 1c; Darkina & Lutaenko, 1996 : 79 ; Xu, 1997 : 229 ; Lutaenko, 1999 : 272 –273; Okutani, 2000 : 1021 , pl. 508, fig. 7; Kwon et al. 2001 : 277 , fig. 1133; Lutaenko, 2003: 26; Lutaenko et al. 2003: 168, pl. 5, fig. 10; Xu & Zhang, 2008 : 257 , fig. 811; Xu, 2008: 589; Lutaenko, 2005 : 76 . Cryptomya (Cryptomya) busoensis M. Yokoyama, 1922 — Huber, 2010 : 461 (text-fig.). Material examined. MBM078482 (specimen broken into small fragments and not figured, therefore), South Yellow Sea, Station 3056 (35°N, 119°45’E ), 45m , in mud, collected by Lv, on October 27th, 1958 . Distribution and habitat. Miocene to Recent. Yellow Sea, Lianyungang, China ; Japan ; Korea ; Russia . Mud bottom in intertidal zone to 60m depth. Occurs in macrosymbiotic association with thalassinoidean shrimps ( Itani & Kato 2002 ; Nara & Kotake 1997 ; Nara et al. 2008 ). Type locality. Otake, Chiba Prefecture, Honshu, Japan , Pleistocene. Diagnosis. Length to 15 mm ; shell laterally compressed, elongate; umbo low, situated subcentral; posterior area bound anteriorly by radial ridge; sculpture of thin commarginal lines; hinge of left valve with a large triangular chondrophore; pallial sinus not reaching further anterior than posterior adductor scar or lacking; pallial line continuous, obscure. Remarks. This species was previously regarded as a synonym of C. californica ( Bernard 1983 ; Coan et al. 2000 ), but is now recognized as a distinct species distinguished by its smaller and more elongate shell ( Coan & Valentich-Scott 2012 ; Huber 2010 ).