496 FUNAFUTI ATOLL. 
the rays are crowded small transverse lunate gemmules. Lunule 
sharply impressed, narrow, lanceolate. Ligament large, external. 
Fig. 50. 
Hinge line short, straight, remainder of the margin evenly rounded. 
Internal margin sharply, finely crenulated. Length 14, breadth 12, 
diameter of conjoined valves 8 mm. 
One entire shell, described 
above, was taken by Mr. G. 
Sweet; and a single, worn, 
slightly larger valve, by my- 
self at Funafuti. 
This species seems nearest 
to C. dilecta, Smith, but is 
distinguished from that and 
other members of the genus by 
more numerous ribs bearing 
Fig. 50. closer packed grains. 
The specific name is in compliment to Mr. G. Sweet, the finder, 
who was a member of the second expedition to Funafuti. 
The side view is drawn toa smaller scale than the other sketches. 
LucINA EXASPERATA, Reeve. 
Reeve, Conch. Icon., vi., 1850, Lucina, pl. i., sp. 4. 
A few specimens from the lagoon. 
Melvill and Standen notice this from Lifu. It is in this 
Museum from New Caledonia. 
Lucina PunctTata, Linne. 
Pfeiffer, Conch. Cab., Veneracea, 1869, p. 262, pl. xix., figs. 8, 9. 
One specimen from the lagoon beach. 
