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THE VOYAGE OF H.M.S. CHALLENGER. 
seven segments, generally supplemented by one or two which are free or non-spiral. 
Segments somewhat convex, peripheral margins thin. Aperture simple, elongate or 
oval ; situate on the distal face of the terminal segment. Texture coarsely arenaceous, 
rough externally. Longer diameter, x T th inch (2 ’3 mm.) or less. 
The figures of this species on PL XXXIV. closely resemble the single drawing given 
by Terquem in his third memoir on the Foraminifera of the French Oolite (loc. cit.), and 
the living specimens correspond in general characters with the terms of his description. 
The size of some of the recent tests considerably exceeds that of the fossil specimens, 
but this is a variable feature, and one in which much latitude may properly be allowed. 
In all cases' the test is coarsely sandy and very rough. The colour is to a certain 
extent that of the constituent sand-grains, which are sometimes exceedingly dark ; 
but there is an absence of the predominating brown tint which forms a noticeable 
feature in many allied species. 
The figured specimens are all from the South Atlantic, — Station 323, east of Buenos 
Ayres, 1900 fathoms. The species occurs also in the South Pacific, on the western coast 
of South America, between Juan Fernandez and the mainland, 1375 fathoms, and 
amongst the islands on the coast of Patagonia, 40 to 140 fathoms. 
M. Terquem’s specimens were obtained from the Oolite (Zone of Ammonites 
parkinsoni) of Fontoy, Moselle. 
Haplophragmium rotulatum, H. B. Brady (PL XXXIV. figs. 5, 6). 
Haploph ragmium rotulatum , Brady, 1881, Quart. Journ. Micr. Sci., vol. xxi., N. S., p. 50. 
Test spiral, nautiloid, biconcave ; umbilicus deeply sunk on both faces, peripheral 
edge thick and square, often somewhat oblique. Segments numerous, forming about 
three Convolutions, which are visible on both sides of the test ; septation obscure. 
Diameter, ^Lth inch (0 - 56 mm.). 
This is a sandy isomorph of Anomalina coronata, with very distinct morphological 
characters. The test is smaller than that of Haplophragmium scitulum, and the 
periphery thick and square, not rounded ; the walls are coarsely arenaceous, and the 
exterior very rough. 
Haplophragmium rotulatum is comparatively rare, and hitherto has only been met 
with on very deep bottoms. The finest specimens are from Station 5 and Station 9, two 
points south-west of the Canaries, depth 2740 fathoms and 3150 fathoms respectively. 
It occurs also at Station 64, in mid-Atlantic, 2750 fathoms ; and at one locality in the 
deep area of the North Pacific, Station 244, depth 2900 fathoms. 
