506 FUNAFUTI ATOLL. 
CHAMA IMBRICATA, Lroderip. 
Broderip, Trans. Zool. Soc., 1835, p. 304, pl. xxxix., fig. 2; Lischke, 
Jap. Meeres Conch., ii., 1871, p. 126, pl. ix., fig. 4. 
Chama foliacea, Quoy and Gaimard, Voy. “Astrolabe,” Zool., iii., 
1835, p. 478, pl. Ixxviii., fig. 19. 
Abundant at low water in the Funafuti lagoon, a mile south 
of the village. 
The foliations on the opercular valve are in my specimens all 
worn away, and for identification I have relied on the contour, 
the dark purple stain on the upper interior margin, and the 
absence of marginal crenulations. The C. foliacea, Q. & G., from 
Vanikoro, appears to me to be identical. As Broderip’s preliminary 
description* did not appear till April 3rd, 1835,¢ Ido not know 
whether it was in London or in Paris that the species was first 
published. 
Hugh Cuming brought the type from Marutea, Paumotus ; 
Melvill and Standen note it from Lifu. An example from Anei- 
teum, New Hebrides, is in this Museum. 
CHAMA sPINosa, Droderip. 
Broderip, loc. cit., p. 306, pl. xxxviii., figs. 8, 9. 
Two specimens from the lagoon. 
_ I£I have correctly identified this species, the upper valve must 
have always been wrongly drawn. In a specimen before me, the 
umbo is at a third of the diameter of the valve from the hinge, 
and around it the valve has performed three spiral volutions. 
Found by Cuming at Marutea, Paumotus. 
CHAMA UNICORNIS, Drugweere. 
Clessin, Conch. Cab., Chama, 1888, p. 15, pl. ii, figs. 3, 4. 
With doubt I so identify, from insufficient figures and des- 
cription, a specimen with two revolutions, 15 mm. long from 
Funafuti. 
CorRBULA TAHEITENSIS, Lamarck. 
Reeve, Conch, Icon., ii., Corbula, 1843, pl. ii., sp. 15. 
One of the most abundant shells on the lagoon beach, but I did 
not meet with it alive. 
To the original locality of Tahiti, Smith adds that of New 
Guinea. { 
GASTROCHHNA LAMELLOSA, Deshayes. 
Smith, Chall. Rep., Zool., xiii, 1885, p. 28, pl. vii., figs. 2, 20. 
Found alive, boring in coral blocks, in the lagoon. 
# Broderip—Proe. Zool. Soc., 1834, p. 149. 
+ See Sclater—Proc. Zool. Soc., 1894, p. 436. 
{ Smith—Proc. Zool. Soc., 1891, p. 430. 
