146 MR F. GORDON PEARCEY ON 



Lagena bicarinata (Terquem). 

 Found (rare) at Station 346. 



Lagena castrensis, Schwager. 

 Rare at Station 346, 56 fathoms. 



* 



Lagena quadricostulata, Reuss. 



Taken at Stations 346 and 459. L. quadricostulata, by no means a common 

 form, was obtained by the Challenger Expedition in Balfour Bay, Kerguelen, 20 

 to 50 fathoms ; and off Sydney, Australia, in 410 fathoms. 



Lagena fimbriata, H. B. Brady. 



Taken (very rare) at Station 467, 2645 fathoms. L. fimbriata is a rare variety ; its 

 natural habitat is in the deeper waters of mid-ocean. 



Lagena auriculata, H. B. Brady. 

 Taken at Stations 342 and 346 (rare). 



Lagena alveolata, H. B. Brady. 



Obtained (rare) at Station 459 only. This species has been collected only from the 

 deep waters of the great ocean basins ; it has been recorded from the North Atlantic, 

 2750 fathoms; South Atlantic, 2200 fathoms; Southern Ocean, 2600 fathoms ; and from 

 South and North Pacific, 2300 fathoms. 



Lagena hispidipliolus, sp. nov. (Plate II. figs. 11-13.) 



Test of variable contour ; oblong, compressed, ovate, elongate ; sometimes subangular. 

 Walls semi-transparent ; superior surface covered with short, pointed spines (hispid), 

 thickest at the margin of the inferior surface, where they form a distinct thickened rim 

 all round. Inferior surface comparatively thin, sole-like ; glassy, with raised ridges ; 

 diffused with minute foramina, and minute spines which may be altogether absent. 

 Aperture a short, tubular neck, projecting abruptly from the apical end of the test ; 

 ornamented with a number (six or more) of minute parallel rings, which occupy the 

 entire neck from its junction with the body to the free end. Diameter -% inch 

 (1 mm.). 



This variety of the genus Lagena would appear from the flattened sole-like inferior 

 surface to have been an adherent form, although I have not seen a specimen actually 

 in situ. Lagena hispidipholus was obtained (rare) from Station 346, 56 fathoms, from 

 the broken-down colonies of Cephalodiscus agglutinans, and has therefore most probably 

 become an adherent form by being enclosed between the chitinous tubes built up 

 by the Cephalodiscus during the enlargement of their colonies. 



(ROY. soc. EDIN. TRANS., VOL. XLIX , 1020.) 



