127 223 
Mactra (Mactrinula) Reevesi, Gray. 
Mactra Reevesii, Gray, The Magazine of Natural History, I, 1837, p. 372. 
= — —  ReEvE, Conchol. icon., VIII, Mactra, Sp. 92. 
— — _ WEINKAUFF in Martini u. CHEMNITZ, Conchyl. Cabin., XI Bd., 2 Abth., p. 82, No. 
85, pl. 28, fig. 2. 
Mactrinula Reevesii, GRAy, Epc. Smirn, Annals and Mag. Nat. Hist., 7 Ser., vol. 14, 1904, p. 9. 
East of Koh Chuen, 9—10 fathoms, shells (*/:). 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. 
Lutraria impar, Desh. 
Lutraria impar, DesHayes, Proc. Zool. Soc. London, XXII, 1854, p. 70, No. 38. 
REEVE, Conchol. icon., VIII, Lutraria, Sp. 10. 
West of Koh Kong, 10—15 fathoms (*/2). 
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, Jonas, Zeitschr. f. Malakozoologie, 1844, p. 34. — Molluskologische Beitrage (Abhandl. 
aus d. Gebiete d. Naturwiss., I, Hamburg 1846), p. 110, No. 2, pl. 7, fig. 1 (non 
Lutraria maxima, MippENvorrFrF, Malacozoologia Rossica, IL, p. 582). 
Reeve, Conchol. icon., VII, Lutraria, Sp. 11. 
LiscHkKE, Japan. Meeres-Conchyl., 1, 1869, p. 138. 
Dunker, Index molluscor. mar. Japon., 1882, p. 185. 
The sound of Koh Chang, 5 fathoms, soft clay (‘/2). 
Long. 72 mm. 
Distribution: — China, Japan (Nagasaki). 
Lutraria curta, Desh. 
Lutraria curta, DrsHayEs, Proc. Zool. Soc. London, 1854, p. 71, No. 42. 
— REEVE, Conchol. icon., VIII, 1854, Lutraria, Sp. 5. 
— = — Hipaico, Fauna malacol. de las isl. Filipinas, II, 1903, p.59, No. 120. 
Between Koh Rin and Cliff Rock, 15 fathoms (7/2). 
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. 
Raéta pulchella, Ad. and Reeve. 
(Pl. IV, Fig. 24). 
Poromya pulchella, ADaMs & Rrrye, Zoology of the voyage of H. M.S. Samarang, Mollusca, 1848, p. 83, 
pl. 23, fig. 1. 
Raeta = — Epa. Smiru, Lamellibranchiata of the Challenger Expedit., p. 56. 
