486 
THE VOYAGE OF H.M.S. CHALLENGER. 
and Mag. Nat. Hist., ser. 4, vol. vi. p. 294, pi. xii. fig. 1), the shell of which takes 
a similar form, but has a superficial ornament of irregular, more or less branching or 
reticulated, longitudinal ribs. 
In the Challenger gatherings Lagena clathrata occurs only in sands dredged near the 
islands to the south-west of New Guinea, notably off the Ki Islands, 580 fathoms, 
and off Aru Island, 800 fathoms ; in these two localities it is tolerably abundant. 
Messrs Balkwill and Millett have a similar form, in which, however, the peculiarities are 
less distinctly marked, from the shore-sands of Galway. 
Lagena quadricostulata, Reuss (PI. LIX. fig. 15, and fig. 7 ?). 
Lagena quadricostulata, Reuss, 1870, Sitzungsb. d. k. Alt. Wiss. Wien, vol. lxii. p. 469. — 
Scblicht, 1870, Foram. Pietzpuhl, pi. iv. figs. 25-30. 
The test of Lagena quadricostulata is pyriform and more or less compressed, the margin 
obtuse or rounded, the base frequently mucronate, and the aperture entosolenian ; the 
surface bears four arched costae, two on each face of the test, near the lateral margins 
and parallel to them. The costae are thickest near the middle, and taper away towards 
the ends. 
Reuss remarks that the test of this species presents intermediate characters, and 
appears equally related to Lagena and Fissurina, the form and general aspect being 
Fissurina- like, whilst the external orifice is circular as in the typical Lagence. 
The best recent specimens that have been met with were dredged in Balfour Bay, 
Kerguelen Island, at depths of 20 to 50 fathoms, and off Sydney, 410 fathoms. 
Von Schlicht’s specimens, described by Reuss, were from the Septaria-clay of Pietzpuhl, 
in North Germany. 
Lagena jimbriata, H. B. Brady (PI. LX. figs. 26-28). 
Lagena fimbriata, Brady, 1881, Quart. Journ. Micr. Sci,, vol. xxi., N. S., p. 61. 
Test pyriform or flask-shaped, broad at the base, compressed ; ento- or ecto-solenian ; 
furnished with a deep vertical wing, encircling the oval base ; the wing traversed by 
parallel tubuli, and sometimes fringed at the free margin. Length, -^th inch (0'42 mm.). 
The general contour of the test of this species varies a good deal, as shown by the 
three figured examples, but the oval wing surrounding the base is in all cases a con- 
spicuous feature. 
Lagena ji/nibriata is a rare variety, and affects very deep water. It has been noticed 
at three Stations in the North Atlantic, at one in the Southern Ocean, at three in the 
South Pacific, and at one in the North Pacific. Of these two are respectively at 580 
