444 



FUNAFUTI ATOLL. 



Fig. 30. 



shallow rounded anal notch, then deeply emarginate and finally 

 much produced, crossing the pillar in a spur. Canal short and 

 rather sharply recurved. Length 5|, breadth If mm. 



Three examples were found in shallow water in the Funafuti 

 lagoon. The most mature, depicted here, is possibly not quite 

 adult and the anal notch may attain a further development. 



The lozenge shaped gemmules and the exceptional feature of the 

 longitudinal furrows being deeper than the transverse assist in 

 distinguishing the species. 



TRIFORIS OBESULA, Jousseaume. 

 (Fig. 31). 



Jousseaume, Bull. Soc. Mai. France, 1884, p. 255, pi. iv. fig. 17 ; 

 Tryon, Man. Oonch., ix., 1887, p. 185, pi. xxxviii., fig. 27. 



Jousseaume's account of this species is not accessible to me and 

 I have to assume that Tryon gives a faithful transcript of it. 

 That however only allows me to identify the shell I now figure 

 and describe as T. obesula, with probability rather than certainty. 

 My perplexity is increased by the fact that the Funafuti shell is 

 identical with specimens received from New Caledonia labelled 

 " T. limosa, Jousseaume," with the description of which they 

 disagree in shape and size. 



The species is distinguished by its small size, corpulent shape 

 and dark brown (burnt umber) hue. The type of sculpture 

 differs from that of the other species of Triforis from Funafuti. 

 The gemmules are so closely packed within the row and are so 



