REPORT ON THE FOEAMINIFERA. 
460 
or less produced slender neck, the end of which becomes slightly patulous and thickened 
round the rim. Internal tube of variable length. Externally the walls are decorated 
with about six bands of chain-work, passing from the base to the commencement of the 
neck.” It may be added, that in one of the figures accompanying the description, the 
whole of the ornament is of this catenulate character ; whilst the other exhibits in 
addition two wing-like costae at opposite points of the periphery. 
Amongst the Challenger specimens even greater diversity is observable. Generally the 
chain-like bands alternate with solid costae of the normal kind, as in PL LVIII. fig. 42 ; 
and sometimes the alternation is only one of the former to two of the latter, as in fig. 43. 
It is obvious that the catenulate ornament is a modification of the perforated costae of 
such forms as Lagenct striatopunctcita. 
Lagena desmophora has been observed at two Stations in the North Atlantic, depth 
390 fathoms and 2350 fathoms respectively ; at one in the South Atlantic, 675 fathoms ; 
at three in the South Pacific, from 1375 to 2350 fathoms; and at one in the North 
Pacific, 1850 fathoms; in addition to the locality at which the original specimens were 
obtained, namely, off Sandalwood Island, coast of Java, 1080 fathoms. 
Lagena torquata, H. B. Brady (PI. LVIII. fig. 41). 
Lagena torquata, Brady, 1881, Quart. Journ. Micr. Sei., vol. xxi., JS'.S., p. 62. 
Test flask-shaped, with tapering ectosolenian neck ; surface-ornament consisting of a 
number of broad longitudinal costae, with depressions or perforations at regular intervals 
down the centre of each, like the catenulate lines in Lagena desmophora ; and alternating 
with these an equal number of narrower, imperforate ribs, — the whole united by a 
series of secondary or less elevated transverse bands. Length, ^ 5 th inch (0‘56 mm.). 
This is a modification of Lagena desmophora, distinguished by the transverse bands, 
which form with the costae a sort of surface-reticulation. 
The single recorded habitat is the South Pacific, just north of Juan Fernandez, 1375 
fathoms. 
Lagena feildeniana, H. B. Brady (PL LVIII. figs. 38, 39). 
Lagena feildeniana, Brady, 1878, Ann. and Mag. Nat. Hist., ser. 5, vol. i. p. 434, pi. xx. fig. 4. 
This also is a striato-punctate variety, but the lines of perforations are situated in the 
intercostal furrows instead of on the costae. 
It is a rare form, found sparingly in about half a dozen localities, as follows : — Smith 
Sound, off Cape Frazer, lat. 79° 45' N., 80 fathoms; Southern Ocean, west of Prince 
Edward Island, 1570 fathoms ; off Sydney. 410 fathoms ; off Tahiti, 620 fathoms ; at one 
(ZOOL. OHALL. EXP, — PART XXII. — 1884.) Y 60 
