264 
THE VOYAGE OE H.M.S. CHALLENGER. 
But little is known of tlie area of the geographical distribution of Hyper ammina 
ctrborescens, and it is not improbable that, when it is sought for, it may turn out to be a 
very common species. Mr. Norman’s specimen, as already stated, was obtained off 
Holstenborg (Knight Islands), Greenland, 20 fathoms 1 ; Mr. Robertson’s, in muddy sand 
dredged in the channel between Cumbrae and Bute, 50 fathoms ; and Mr. Wright reports 
the occurrence of fragments on the coast of Donegal, Ireland. Broken specimens have 
also been found in soundings from the shores of Novaya Zemlya and Franz- Josef Land, as 
well as in material from one of the Challenger Stations in the South Atlantic, namely, 
off Pernambuco, 350 fathoms. 
Marsipella, Norman. 
Proteonina, Carpenter [1869]. 
Marsipella., Norman [1878], Brady, Biitsclili, Carpenter, Haeusler. 
Test free, fusiform, or nearly cylindrical, with an aperture at each extremity ; walls 
thin, firmly cemented, sometimes composed entirely of sponge-spicules, but more frequently 
of coarse sand and sponge-spicules, in variable proportions. 
Mr. Norman’s account of the genus Marsipella 2 is to some extent provisional. 
It is based upon the typical fusiform species, but apparently on an insufficient range of 
specimens ; and the descriptive characters have required considerable modification. 
Marsipella elongata, Norman (PL XXIV. figs. 10-19). 
Proteonina , sp., Carpenter, 1869, Proc. Roy. Soc., vol. xviii. p. 60; — 1875, The Microscope, 
5th Ed., p. 533, figs, d.e.f. 
Marsipella elongata, Norman, 1878, Ann. and Mag. Nat. Hist., ser. 5, vol. i. p. 281, pL xvi. fig. 7. 
„ „ Carpenter, 1881, The Microscope, 6th Ed., p. 561, figs, d.e.f 
Test elongate, irregularly curved or crooked, more or less fusiform ; consisting of a 
cylindrical tube, tapering and drawn out towards the extremities. Walls thin ; central 
portion, where the test is widest, formed almost exclusively of coase sand-grains ; the 
narrow, tubular ends built of sponge-spicules laid together longitudinally and firmly 
cemented. Maximum length, about ^th inch (6 mm.). 
This striking species was one of many arenaceous Foraminifera new to science, obtained 
by Dr. Carpenter on the “ Lightning” Expedition of 1868, and was originally assigned by 
him to Williamson’s now disused genus Proteonina. The description and figure subse- 
quently published by the Rev. A. M. Norman ( loc . cit.) appear to be founded on a defec- 
tive specimen. When complete the two ends of the test taper almost equally, and, as a 
1 Not from the “Coast of Norway,” as stated, through inadvertence, in the Report on the Foraminifera of the 
Austro-Hungarian Expedition, loc. cit. 
2 Ann. and Mag. Nat. Hist., ser. 5, vol. i. p. 281. 
