558 



FUNAFUTI ATOLL. 



in 1898, when 

 Expedition. 



in charge of the Diamond Drill Boring 



. 73. 



RISSOA POOLEI, sp. nov. 



(Fig. 73.) 



Shell broadly ovate. Whorls four. 

 Colour white with a few subsutural orange 

 dots, one of which occurs on the lip and 

 three on the remainder of the last whorl. 

 Sculpture the last whorl is angled at a 

 weak spiral rib on the periphery. Pro- 

 portionately stronger are three on the 

 penultimate, and two on the antipenulti- 

 mate, similar spiral ribs. The whole shell 

 is closely covered by minute, close, wavy, 

 spiral threads which are overridden by 

 faint, close, longitudinal sculpture extend- 

 ing across the whole whorl. Umbilicus 

 small, covered by the columella. Aperture 



round, rather oblique. Lip massive, expanded and broadly 



reflected with a second lip or varix close behind. Columella 



broad appressed. Length '95; breadth '66 mm. 



Dredged off Tutaga Islet at depths of 45-52, 50 - 60, and 200 



fathoms ; off Beacon Islet (Funamanu) at 150 fathoms ; and north 



of Pava Islet at 36 fathoms. 



The affinities of this shell are with the species previously 



described from Funafuti as Rissoa invisibilis. It is named in 



honour of Mr. William Poole, B.A., a volunteer assistant of the 



second expedition to Funafuti. 



DlALA PROFUNDA, sp. HOV. 



(Fig. 74.) 



Shell subulate, thin. Colour, the figured example 

 has the first four whorls ochraceous, the next two 

 almost white, the last two ochraceous buff with the 

 columella and lip tawny ; another specimen is uni- 

 form dark brown. Whorls eight. The apex smooth 

 and blunt ; the third and fourth whorls with two 

 raised spiral cords each, the remaining whorls 

 angled above and below the suture. Surface 

 smooth and shining. Aperture perpendicular, 

 angled above, rounded below ; outer lip straight 

 and sharp ; columella reflected over a minute per- 

 foration. Length 1-9; breadth '66 mm. 



Dredged off Tutaga Islet at depths of 45 - 50, 

 50 - 60 and 200 fathoms ; and in 36 fathoms north 

 and 36 fathoms N. 30 W. of Pava Islet. 



Fig. 74. 



