200 MR. F. CHAPMAN ON FORAMINIFERA 
Gypsrva vestcutaris (P. & J.), var. MONTICULUS, nov. (PI. 19. 
figs. 14 a, 6.) 
Test attached, roughly discoidal; the attached surface flat or 
undulate, and showing the more regular central series of 
chambers, sometimes spiral, followed by the acervuline chambers ; 
the free, superior surface sharply conical in the centre, rapidly 
sloping to the level of a thin peripheral flange. Distinguished 
from the thin wild-growing Planorbuline by the absence of 
peripheral orifices and the entire absence of regularity in the 
peripheral chambers. Diameter ranging from 2 to 4 mm. 
Lagoon, Funafuti. Sample 2 (153 fathoms); sample 4 (23 
fathoms); sample 5 (24 fathoms); sample 7 (24 fathoms); 
sample 8 (26 fathoms); sample 11 (25 fathoms); sample 138 
(26 fathoms); sample 15 (19 fathoms) ; sample 16 (20 fathoms) ; 
sample 17 (12 fathoms). 
Gypstna vEsSIcULARIS (P. & J.), var. SQUAMIFORMIS, NOV. 
(Pl. 19. figs. 15 a, 6.) 
Test thin, normally attached, encrusting surfaces of organisms. 
Full-sized specimens measure about 3 or 4 mm. in diameter. 
Shell consists of a single layer of acervuline chambers. The 
paper-like fragments of the test of this variety are sometimes 
very numerous in the shallow-water sands, both within and 
outside the lagoon. 
Lagoon, Funafuti. Sample 3 (20 fathoms); sample 4 (23 
fathoms); sample 5 (24 fathoms); sample 7 (24 fathoms); 
sample 8 (26 fathoms); sample 13 (26 fathoms); sample 16 
(20 fathoms); sample 17 (12 fathoms). 
Potytrema, isso [1826]. 
POLYTREMA MINIACEUM (Pallas). 
Millepora miniacea, Pallas, 1766, Elenchus Zoophytorum, p. 251. 
P. miniaceum (l.), Goés, 1896, Bull. Mus. Comp. Zool. Harvard, 
vol, xxix. No. 1, p. 75. 
P. miniaceum (Pallas), Chapman, 1900, Journ. Linn. Soc., Zool. vol. 
xxvill. p. 16, pl. 4. fig. 7. 
This species is found living in the lagoon in some abundance, 
but it never attains to the size which it does outside the atoll, 
usually measuring only 2 mm. across. It is generally found 
attached to joints of Halimeda. 
Lagoon, Funafuti. Sample 1 (10 fathoms); sample 6 (21 
