406 



FUNAFUTI ATOLL. 



Schmeltz quotes this from Fiji and Samoa. There are specimens 

 in this Museum from New Caledonia. 



TEINOSTOMA QUALUM, sp. nov. 

 (Fig. 2). 



Fig. 2. 



Shell with spire scarcely elevated, rather widely umbilicated. 

 Colour white. Whorls three, flattened below the suture, rounded 

 at the periphery and concave at the base. Sculpture : the last 

 whorl is ornamented by about twenty, broad, squarely projecting, 

 transverse ribs, which arise at a distance from the suture, enlarge 

 to the periphery and continue to the basal angle, these ribs vanish 

 on the penultimate whorl ; close, regular and fine, raised, spiral 

 lines cover the whole shell, crossing the ribs and interstices alike; 

 these are in their turn overridden by transverse microscopic 

 threads. Base excavate in the centre. Umbilicus one-fifth of 

 the shell's diameter, exhibiting the previous whorls. Aperture 

 round, lip thickened, above spreading on the previous whorl and 

 at the base projecting a callus tongue into the umbilicus. Major 

 diameter T8; minor 1-4; height *75. 



Three specimens from sand on the lagoon shore, all of which 

 are unfortunately broken at the aperture. 



This closely resembles Cyclostrema archeri, Tryon* from Singa- 

 pore, which is rather larger and more closely ribbed, but the basal 

 callus on the lip of the present form has decided me in considering 

 it generically and therefore specifically distinct from that. 



TEINOSTOMA TRICARINATA, Melvill & Standen. 



Melvill & Standen, Journ. Conch., viii., 1896, p. 311, pi. xi., 



figs. 75 a. b. 



Three specimens occurred on the sandy beach of the Funafuti 

 lagoon. The only other example known came from Lifu. 



* Man. Conch, x., 1888, p. 89, pi. xxxiii., figs. 84, 86. 



