148 MR F. GORDON PEARCEY ON 



Nodosariafiliformis, d'Orbigny. 

 This species was also obtained sparingly at Station 346. 



Genus CRISTELLARIA, Lamarck. 

 Cristellaria convergens, Bornemann. 



This species was found at Stations 337a (rare), 342 (few), 418 (rare), and 447 (rare). 

 The natural habitat of this species is in the deeper waters of the great ocean basins. It 

 has been collected in the North Atlantic, in 2740 fathoms ; in the South Atlantic, 2350 

 fathoms; and in the Pacific Ocean, from 16 to 1850 fathoms. 



Cristellaria cultrata, var. (Montfort). 



A dentate variety was obtained (rare) at one station only, 451, 1741 fathoms. This 

 species has been recorded from as far north as the Arctic Circle, and as far south 

 as the shores of Patagonia, but in most cases from comparatively shallow water. 



Cristellaria articulata, Reuss. 



Obtained frequently at Station 346, 56 fathoms. Previously taken off Culebra 

 Island, West Indies, 390 fathoms, and off Tristan da Cunha, 100 to 150 (abundant). 



Cristellaria crepidula (Fichtel and Moll). 



This species has a wide distribution, and is chiefly confined to comparatively 

 shallow water. It was obtained in fair numbers at Station 346, 56 fathoms. C. crepi- 

 dula has been collected from as far north as Davis Straits (lat. 68 50'N.), and is a 

 common form in the North Sea and Atlantic ; its range of depth is from 6 fathoms 

 in the Pacific to 2350 fathoms in the tropical part of the South Atlantic. 



Cristellaria schloenbachi, Reuss. 



Obtained (rare) at Station 346. Taken by the Challenger Expedition off Bermuda, 

 435 fathoms, and Culebra Island, West Indies, 390 fathoms; also off Raine Island, North 

 Australia, 1 1 5 fathoms. 



Cristellaria acutauricularis (Fichtel and Moll). 



This thick ovoid variety was also taken (rare) at Station 346. It is not a common 

 form. It has been found in the North Atlantic, in from 390 to 2750 fathoms ; off the 

 Cape of Good Hope, 150 fathoms ; and from six stations in the South Pacific, in depths 

 ranging from 155 to 2350 fathoms ; but at all times rare. 



Genus AMPHICORYNE, Schlumberger. 

 Amphicoryne falx (Jones and Parker). 



This interesting dimorphous striated variety was obtained (rare) at Station 346. 

 56 fathoms; this species is also found in the warm area of the Faroe Channel, in 516 

 fathoms. 



(ROY. SOC. EDIN. TRANS., VOL. XLIX., 1022.) 



