9 105 
Nuculana puellata, Hinds. 
Nucula puellata, Hinps, Proc. Zool. Soc. London, XI, 1843, p. 100. 
— — — Zoology of the voyage of “Sulphur.” Mollusca by Hinps, 1845, p. 64, pl. 18, 
fig. 18. 
Leda —_ — Haney, Monogr. of the fam. Nuculide (Sowersy, Thesaurus Conchyl., III), 
p. 127, pl. 3, fig. 94. 
Leda - — REEVE, Conchol. icon., XVIII, Leda, Sp. 34. 
Koh Chuen, 10—15 fathoms (common). W. of Koh Chuen, soft clay and mud 
(very common). S. of Koh Samit, 20 fathoms, mud ('/2). Sound of Koh Chang, 
3—5 fathoms, soft clay (common). West coast of Koh Chang, 10 fathoms, mud ('/2). 
S. of Koh Bidang, 9 fathoms, mud (common). S. of Koh Kahdat, 8—10 fathoms, 
mud (‘/2). Between Koh Kahdat and Koh Kut, 6 fathoms, clay mixed with sand 
(‘"/2). W. of Koh Kut, 15 fathoms, mud (*/:). N. of Koh Kong, 8 fathoms, mud 
(2). W. of Koh Kong, 10—15 fathoms (?/2). 
Long. 3—8 mm. 
Distribution: — Malacca, NE. coast of New Guinea (BRraziEr). 
There is great variability in the length of the rostrum, and in some specimens 
it may be much longer than is shown in the figures given by Hinps and Hantey 
REEVeE’s figure is very misleading, for the sculpture — which in reality consists 
of an exceedingly pretty, fine, regularly concentric striation — in his figure is 
highly irregular and undulating. 
Nuculana mauritiana, Sow. 
Nucula Mauritiana, G. B. Sowersy jun., Conchological Illustrations, 1833, Nucula, p. 4, No. 22, fig. 17. 
-- -— _ HANLEy, Catal. of rec. biv. shells, p. 170, pl. 19, fig. 46. 
Leda Reeve, Conchol. icon., XVII, Leda, Sp. 33. 
Leda — = Sowersy, Thesaur, Conchyl., HI (Hanuey, Monogr. of the fam. Nucu- 
lide), p. 126, No. 38, fig. 99. 
Between Koh Lan and Koh Kong, common, taken in great number in 6—30 
fathoms, mud, clay mixed with sand, shells. 
Long. 2—12 mm. 
Distribution: — Mergui Archipel., Ceylon, Bombay, Mekran Coast, Mauritius. 
— China. 
Many of the specimens from the Gulf of Siam bear a close resemblance to 
Nuculana nasuta, Sow. 
Nuculana retusa, Hinds. 
Nucula retusa, Hinps, Proc. Zool. Soc. London, XI, 1843, p. 99. 
— — = Zoology of the voyage of “Sulphur.” Mollusca by Hinps, 1845, p. 63, pl. 18, fig. 9. 
Leda (Portlandia) retusa, Hinps, Hantey, Monograph of the fam. Nuculidw (SowrEkpy, Thesaurus Conchyl. 
III), p. 146, No. 71, pl. 2, figs. 283—29. 
Yoldia retusa, Hinps, H. & A. Apams, Genera of rec. Moll., II, 1858, p. 548. 
— Reeve, Conchol. icon., XVIII, Yoldia, Sp. 21. 
D. K D. Vidensk. Selsk. Skr., 7. Riekke, naturvidensk. of mathem. Afd. V. 3. 14 
