127 223 



Mactra (Mactrinula) Reevesi, Gray. 



Mactra Reeocsii, Gray, The Magazine of Natural History, I, 1837, p. 372. 



— — — Reeve, Conchol. icon., VIII, Macira, Sp. 92. 



— — — Weinkauff in Martini u. Chemnitz, Conchyl. Cabin., XI Bd., 2 Abtli., p. 82, No. 



Sr), pi. 28, fig. 2. 

 Mactrinula Reevesii, Gray, Edg. Smith, Annals and Mag. Nat. Hist., 7 Ser., vol. 14, 1904, p. 9. 



East of Koh Chuen, 9—10 fathoms, shells ('/s). South of Koh Samit, 14 18 

 fathoms (1). 



Long. 40 mm., alt. 25 mm., crass. 13 mm. 



Distribution:— Malacca Strait. Off Chedubar (Aracan coast). — China. 



Lutr aria impar, Desh. 



Lutraria impar, Dfshayf.s, Proc. Zool. Soc. London, XXII, 1854, p. 70, No. 38. 



— — — Reeve, Conchol. icon., VIII, Lutraria, Sp. 10. 



West of Koh Kong, 10—15 fathoms (V/s). 

 Long. 69 mm., alt. 26 mm. 



Distribution: — Moreton Bay, Australia (Strange). 



Of this characteristic species only one dead left valve, without epidermis, 

 is found in the collections of the Danish Expedition to Siam. 



Lutraria maxima, Jonas. 



Lutraria maxima, .Ionas, Zeitschr. f. Malakozoologie, 1844, p. 34. — Molluskologische Beiträge (Abhandl. 

 aus d. Gebiete d. Naturwiss., I, Hamburg 184(i), p. 110, No. 2, pi. 7, fig. 1 (non 

 Lutraria maxima, Miduendorff, Malaeozoologia Rossiea, III, p. 582|. 



— — — Reeve, Conchol. icon., VIII, Lutraria, Sp. 11. 



— — — LiscHKE, Japan. Meeres-Conchyl., I, 1869, p. 138. 



— — — Dunker, Index molluscor. mar. Japon., 1882, p. 185. 



The sound of Koh Chang, 5 fathoms, soft clay ('/a). 



Long. 72 mm. 



Distribution: — China, Japan (Nagasaki). 



Lutraria curta, Desh. 



Lutraria curta, De.shayes, Proc. Zool. Soc. London, 1854, p. 71, No. 42. 



— — — Reeve, Conchol. icon., VIII, 1854, Lutraria, Sp. 5. 



— — — Hidalgo, Fauna malacol. de las isl. Filipinas, II, 1903, p. 59, No. 120. 



Between Koh Hin and Cliff Rock, 15 fathoms ('s). 

 Distribution:— Aden (Shopland). — Philippines (Reeve). 

 Only a small fragment of the left valve of a young individual has come to 

 hand from the above locality, so the determination is somewhat uncertain. 



Raëta pulchella. Ad. and Reeve. 



(PI. IV, Fig. 24). 

 Püromfia pulcliella, Ada.m.s & Reeve, Zoology of the voyage of H. M. S. Saniarang, MolIu.sca, 1848, p. 83, 



pi. 23, fig. 1. 

 liaeta — — Ei>o. Smith, Lamellibranchiata of the Challenger Expedit., p. 56. 



