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Anatina hnicola Reeve. Hong-Kong. 
Anatina laterna Lmck., VI, 77. [Chenu, p. 36, fig. 159.] Océan 
Indien. 
Genre Periploma Schmch. 
[Syn. Bontia Leach. ; Ligula Rclz.] 
SECTIONS 
(1) Periploma Schmch. (2) Cochlodesma Couth. 
(1) Periploma trapezoides Lmck., VI, 81 [Encycl., pl. 230, 
fig. 6 ; Chenu, p. 38, fig. 167-168.] Océan Atlantique. 
Genre Lyonsia Turt. 
[Syn. Periploma Rang. ; Osteodesma Desh. ; Magdala Leach. ; 
Pandorina Seacc. ; Hiatella Brown. ; Tetragonostea Desh.] 
SECTIONS 
(1) Lyonsia Turt. (3) Lyonsiella Sars. 
(2) Entodesma Phi. (4) Silenia Smth. 
(1) Lyonsia norwegica Chemn., Pornichet (Cailliaud). 
[Syn. L. elongata Gray ; L. nitida Fabr. ; L. pellucida 
Brown. ; Amphidesma corbuloides Lmck Vl, 129]. 
(1) Lyonsia corruscans Scacc., Alger (Joly). 
Genre Thracia Leach. 
[Syn. Odontocinetus Cost. ; Odontocincta Agassiz ; Odoncyneta 
Cantr. ; Cinctodonta Herms. ; Osteodesma BMI.] 
SECTIONS 
(1) Thracia Leach. (3) Ligula Rclz. 
(2) Rupicola Fl. de B. 
(1) Thracia papyracea Poli. [Kiener, pl. 2, fig. 4.] Le Pou- 
liguen (Caïlliaud). 
[Syn. T. declivis Penn. ; T. fragilis Penn. ; T. inter¬ 
media Clark. ; T. ovata Brown. ; T. phaseolina 
Lmck. VI, 129 ; T. villosiuscula Macgill.] 
(1) Thracia corbuloides Desh., in Lmck, VI, 83. [Kiener, pl. 2 
fig. 1 ; Chenu, p. 40, fig. 180.] Toulon. 
