THE FORAMINIFERA OF LORD HOWE ISLAND. 615 
almost continuous with the surface of attachment and presenting no sign of 
marginal apertures. Nearly all the specimens exhibit a varying number 
(1-4) of pustular processes on the superior surface. These rise slightly 
above the smoothly finished agglutinate surface, and appear to consist of the 
same fine sand and mud as the rest of the test, but without agglutinating 
cement. It appears probable that they represent apertures for the extension 
of protoplasm. 
The test when laid open is seen to contain a single layer of intricately 
ramifying flat tubes, without septa, separated from one another by thin walls 
of agglutinated material and from the surface of the alga by a thin floor or 
pavement layer of similar material. The tubes are completely filled with a 
mass of dark protoplasm. The protoplasmic body is voluminous, dark in colour, 
and ramifies through the entire structure in a single layer separated from 
the surface of the alga by a floor of material similar to that used in the 
construction of the upper layer of the test. 
Size very variable. Compact specimens 1-3 mm. in diameter, but narrow 
specimens following a crevice in their growth may probably attain four or 
five times this size. 
Haddonia Chapman. 
67. Haddonia torresiensis Chapman. (PI. 35. figs. 17-22.) 
Haddonia torresiensis Chapman, 1897, " On Haddonia, a new Genus of the 
Eoraminifera from Torres Straits," Journ. Linn. Soc. 
Lend. vol. xsvi. (Zoology) (1898) pp. 452-456, pi. 28. 
& text-fig. p. 453. 
Heron-Allen & Earland, 1914-15, FKl. p. 616, pi. 46. 
fig. 22. 
Abundant and extremely variable both as regards size and relative irregu- 
larity of growth. This organism, which is so abundant in this material, 
appears to be unquestionably referable to Chapman^'s genus ; but a study of 
the material leads us to differ from his conclusions as to its relationships. 
fle placed his genus among the labyrinthic Lituolinas ; we feel inclined to 
transfer it to the Textulariidse, and we have even some doubt as to its generic 
value. A study of a series of specimens indicates that at Lord Howe Island 
growth starts as a free and regularly formed Te.dularia {agglidinans or 
gramen). After attaining almost full growth the chambers begin to run 
wild, and they may then assume practically any form — curving or straight 
lines, acervuline masses, remain free, attach themselves to large sand-grains, 
or become sessile upon other organisms, but often so lightly as to become 
detached without damage. The shell-structure is of coarse calcareous and 
siliceous grains with a large proportion of calcareous cement. Chapman 
states that "the test commences either with a straight or a sinuous series of 
chambers, or, more rarely, with a flat coil of a single whorl, after which the 
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