188 MR. F. CHAPMAN ON FORAMINIFERA 
favourable to the growth of this pelagic foraminifer, for the 
specimens found are al) below the usual size and are restricted 
to the lagoon-margin. 
Lagoon, Funafuti. Sample 2 (153 fathoms); sample 17 
(12 fathoms); sample 18 (74 fathoms). 
GLOBIGERINA BULLOIDES, d’Orbigny, Var. TRILOBA, Reuss.’ 
Globigerina triloba, Reuss, 1849, Denkschr. Ak. Wiss. Wien, vol. i. 
p. 374, pl. xlvii. figs. 11 a-e. 
G. bulloides, d’Orb., var. triloba, Reuss, Brady, 1884, Rep. Chall. vol. ix. 
p- 595, pl. lxxix. figs. 1, 2; pl. Ixxxi. figs. 2, 3. 
This variety accompanies the type form in two out of the 
three occurrences in the lagoon. Similarly these are small 
starved specimens. 
Lagoon, Funafuti. Sample 17 (12 fathoms); sample 18 
(74 fathoms). 
Family ROTALIIDA. 
Subfamily SPIRILLINING. 
SprriuLina, Hhrenberg [1841]. 
SPIRILLINA TUBERCULO-LIMBATA, Chapman. 
Spirillina tuberculo-limbata, Chapman, 1900, Journ. Linn. Soc., Zool. 
vol. xxviii. p. 11, pl. 1. figs. 8 a—c. 
Although in general form this is like Spirillina inequalis, 
Brady, the two faces of the test are differently decorated to 
that species, there being no tubercles on the inferior face. It is 
confined to one point near the lagoon-margin. 
Lagoon, Funafuti. Sample 18 (74 fathoms). 
SPIRILLINA SPINIGERA, Chapman. (PI. 19. figs. 9 & 10.) 
Spirillina spinigera, Chapman, 1900, Journ. Linn. Soc., Zool. vol. xxviii. 
p- 10, pl. i. figs. 7 a-c. 
The material from the lagoon affords us many additional 
specimens of this interesting form. The specimen (fig. 9) 
showing the long spinous decoration appears to belong to the 
megalospherie type of shell; whilst the larger forms, which by 
the way are more numerous, and which have a thinner peripheral — 
edge, serrate rather than spinous (fig. 10), are presumably 
microspherie. 
Lagoon, Funafuti. Sample 18 (73 fathoms). 
