NARRATIVE OF THE CRUISE. 
837 
“ Of the Lageniche, apart from some of the minute varieties of Lagenct found in the 
red clay deposits of abyssal depths, displaying superficial ornament of extraordinary 
delicacy and beauty, the most interesting of the new forms are certain modifications of 
L'agena and Nodosaria, in which a cellulated wall takes the place of the usual solid or 
porous calcareous film. Such forms have their origin doubtless in costate and reticulate 
varieties, and the cellulated structure is due to the closing in of the furrows or angular 
depressions by a thin external wall. 
“ The singular type Ramulina, only known before by the small fragments not 
uncommon in the Chalk, was found for the first time as a recent organism amongst the 
Fig. 306 . — Hastvjerina pelagica (cl’Orb.) (murmyi, Wyv. Thoms.), from the surface. 
coral sands of the Pacific. The shell is rarely obtained even approximately complete, 
owing to its branching habit and the slenderness of its stoloniferous connections. It 
consists of a number of spheres connected by narrow tubes of greater or less length, 
several tubes issuing from a single chamber, and each producing a fresh sphere, usually 
of smaller size. The chambers, though normally spherical, sometimes take less regular 
forms. 
“ Of the Gflobigerinidse, the genus Globigerina has- been found to possess a far 
wider range of morphological variation than was previously supposed ; and the Challenger 
