278 DISCOVERY REPORTS 



St. 89. Young-fish trawl, 1000 (-0) m. : 4 specimens. 



St. 276. Young-fish trawl, 150 (-0) m. : 2 specimens. 



St. 288. I m. net, oblique, 73-0 m. : i specimen. 



13° 25' 00" N, 18° 22' 00" W, 4-5 m. net, 900-0 m. : i specimen. 



The above hauls were made north of Tristan da Cunha and from Cape Verde to Cape 

 Town. 



The animal of this species is very like that of C.pyramidata (L.). The shell is extremely 

 fragile and transparent when fresh. It differs from all the other species by the extreme 

 length of the lateral points, which start from below the middle of the shell. The dorsal 

 side has a strong median keel which projects forward in a point anteriorly. The posterior 

 end is curved over the back and terminates in the rounded embryo shell. There are two 

 longitudinal ribs on either side of the median keel and strong transverse furrows are 

 present on both sides of the shell. 



Distribution. Mediterranean (Boas, 1886, p. 83). Atlantic (exceptionally to 59° N) 

 and Indian Oceans: Antarctic (Meisenheimer, 1906). South-west Ireland (Massy, 

 1909). 



Cleodora balantium, Rang, 1834. 



Hyalaea balantium, d'Orb., 1826-33. 

 Balantium recurvum, Sow., 1877. 



St. 276. Young-fish trawl, 150 (-0) m. : 2 specimens. 



St. 286. Young-fish trawl, 125 (-0) m. : 4 specimens. 



St. 287. Young-fish trawl, 800-1000 (-0) m. : 2 specimens. 



St. 288. Young-fish trawl, 250 (-0) m. : 5 specimens ; i m. net, oblique, 73-0 m. : i specimen. 



St. 294. Young-fish trawl, 100-150 (-0) m. : 2 specimens. 



St. 297. Young-fish trawl, 200-300 (-0) m. : i specimen. 



All the specimens were caught between Cape Verde and the Congo river. They 

 measured 8-29 mm. Hydroids were present on the shells in four of the hauls. 



Although widely distributed this appears to be a rare species everywhere. The shell 

 has no lateral points and the upper and lower lips project very slightly in the centre. The 

 upper surface has three strong longitudinal ribs and transverse furrows. The lower 

 side of the shell is swollen and prominent. 



Distribution. Atlantic (Boas, 1886). Indian Ocean (Boas, 1886). Pacific (d'Or- 

 bigny, 1847). North of New Guinea (Challenger Expedition). 



Cleodora falcata, Pfeffer, 1880. 



Clio polita, Pelseneer, 1888; Meisenheimer, 1905. 



St. 71. Young- fish trawl, 2000 (-0) m. : i specimen. 

 St. 85. 4-5 m. net, 2000 (-0) m. : ? i specimen. 

 St. 89. Young-fish trawl, 1000 (-0) m. : ? 1 specimen. 

 St. 239. 4-5 m. net, 1050-1350 (-0) m.: 2 specimens. 



