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Transactions of the Society. 
but the test is thinner, and the chambers have not the inflation 
characteristic of S. nitida. It is associated with the thin form of 
Spiroloculina from the coast of Papua, which Brady, loc. cit., describes 
as a variety of S. limbata* and is distinguishable from it chiefly by 
the partially acute periphery. Prof. T. Rupert Jones says of Brady’s 
form, “ It is evidently a limbate sub-variety of nitida d’Orb., which 
is a sub-type or variety of the type Spirtloculina planidata 
(Lamarck).” | The S. nitida of the same monograph, pi. v. fig. 3, 
is carinate. It should be mentioned that the wildness of growth is 
confined to the form which has cylindrical chambers. 
S. nitida when striate, is the S. grata of Terquem ; when reticu- 
late, the S. foveolata of Egger ; and when arenaceous, the S. asperula 
of Karrer. 
Spiroloculina nitida (Striate variety.) 
Spiroloculina grata , Terquem, 1878, Mem. Soc. Geol. Fr., ser. 3, 
vol. i. p. 55, pi. x. figs. 14, 15. S. grata (Terquem) Brady, 1884, 
‘Chabenger’ Kept., p. 155, pi. x. figs. 16, 17, 22, 23. S. grata 
Terquem, Egger, 1893, Abhand. d. k. bayer. Akad. d. Wiss., Cl. II. 
vol. xviii. p. 224, pi. i. fig. 39. 
This common coral-reef species is found abundantly at most of the 
Stations in both areas. In a large proportion of the specimens the 
chambers are square in transverse section, like S. planidata. 
Spirolocidina nitida (Reticulate variety). 
Spiroloculina foveolata Egger, 1893, Abhandl. d. k. bayer. Akad. 
d. Wiss., Cl. II. vol. xviii. p. 224, pi. i. figs. 33, 34. 
This may be described as a large thick-shelled S. nitida , which 
has the surface markings of Miliolina reticulata. It attains its ex- 
treme development in the coral sands of the South Pacific. Egger ’s 
figured specimen was from the Mauritius, and is an immature example 
of the species. It occurs only at Station 1, and is very rare. 
Spiroloculina (?) convexiuscula Brady. 
Spiroloculina (?) convexiuscula Brady, 1884, ‘ Challenger 5 Rept., 
p. 155, pi. x. figs. 18-20. 
Assigned by Brady, with some hesitation, to this genus, it is more 
probably an arrested form of Articulina. It is remarkable for its 
uniformity, specimens from all localities being almost identical in size 
and structure. It occurs only at two 4 Challenger * Stations, both on 
the coast of Papua. In the Malay Archipelago it is common and 
widespread over Area 1, but rare in Area 2. 
Spiroloculina (or Hauer ina) frag ilissima Brady. (See Hauerina.) 
* P. 150, pi. x. figs. 1,2. f Pal. Soc., 1S95, p. 114. 
