THE FORAMINIFERA OF LORD HOWE ISLAND. 637 
Very rare. This is the type with the sunken umbilicus and pronounced 
sutures as contrasted with the smooth and rounded type P. micheliniana. 
We have gone into this matter on several occasions, and particularly 
ut supra. 
179. PuLViNULlNA BLEGANS {cV OrUgny) . 
Rotalia [Turhinulina) elegans d'Orbigny, 182fi, TMC. p. 276, no. 54. 
Pulvinulina elegans Brady, 1884, FC. p. 699, pi. 105, figs. 4-6. 
Heron-Allen & Earland, 1914-15, FKA. p. 717. 
One small and broken specimen. 
Rotalia Lamarck. 
180. Rotalia beocaeii (Linne). 
Nautilus heccarii Linne', 1767, SN. p. 1162; 1788, SN. p. 3370. 
Rotalia {Turhinulina) beccarii d'Orbigny, 1826, TMC. p. 275, no. 42; Modele, 
no. 74. 
„ heccarii Brady, 1884, FC. p. 704, pi. 107. figs. 2, 3. 
One large but very weak specimen, hardly separable from the next species. 
181. Rotalia pErlucida Heron- Allen <!J- Earland. 
Rotalia heccarii (pars) Balkwill & Wright, 1885, DIS, p. 351, 
,, pcrhicida Heron-Allen & Earland, 1913, CI. p, 139, pi. 13, figs. 7-9 ; 
1914-15, FKA. p. 718. 
Not uncommon. Extremely depressed and pauperate. 
Sub-family Tinoporin^. 
Gypsina Carter. 
1S2. Gypsina inhjjrens {Sclmltze). (PI. 37. figs. 62-64.) 
Acervulina m7jce?-«)w Schultze, 1854, OP. p. 68, pl. 6. fig. 12. 
Gypsina „ Brady, 1884, FC. p. 718, pl. 102. figs. 1-6. 
Heron-Allen & Earland, 1914-15, FKA. p. 724. 
Y%rj common, and, as usual, very variable in the size of the chamberlets. 
One specimen was observed characterized by the extremely small size of 
the constituent chambers, some of which are broken and disclose tightly 
packed young individuals within (fig. 62). 
Among the noticeable variations are two forms : one, white with very 
large and loosely aggregated chambers, often extending in acervuline 
projections, and sometimes fairly smooth and coarsely perforate, at others 
covered with densely aggregated spines of secondary shell-matter. The 
shape may possibly be due to the irregular surface of the host from which 
the specimens have become detached. In another variant, possibly more 
nearly related to G. rubra, the form is wild-growing, large-chambered, the 
