Fig. 
Fig. 1, 
ne 
o> 
aT SD ON 
FROM THE FUNAFUTI ATOLL. 27 
. Polytrema miniaceum (Pallas), var. involva, nov. A section through 
part of a laminated mass, similar to that sometimes found intergrown 
with Lithothamnion. From trial pit, seaward face, Funafuti. x 36. 
. Carpenteria utricularis, Carter. A vertical section of the test, showing 
the papillate exterior and chambers partly filled with sponge-spicules. 
x 36. 
. Carpenteria monticularis, Carter. A vertical section taken through the 
base of the test, showing the smooth external surface and coarse and 
fine tubuli. xX 36. 
. Cycloclypeus Carpenteri, Brady. A full-grown specimen of the megalo- 
spheric form (A). X 6. 
. C. Carpenteri, Brady. A vertical section of the test, showing the 
extraordinary thickness of the secondary layer of shell. The thin 
flange-like periphery has broken away. x 10. 
PuatE 3. 
Two series of Cycloclypeus Carpenteri, Brady, showing the various 
stages of growth in forms A (megalospheric) and B (microspheric) 
respectively. 3 nat. size. 
. The central portion of a microspheric form of C. Carpenteri, Brady, 
cut a little out of the median plane, showing an interesting resemblance 
in its commencement to Heterostegina, to which genus it bears some 
relationship. xX 36. 
. A half-grown specimen of the microspheriec form of Cycloclypeus 
Carpentert. X 5. 
. A megalospheric form of C. Carpenteri in median section. The shell 
has been badly broken at various stages of growth and repaired again. 
x 16. 
. The sarcode of C. Carpentert (form A). xX 10. 
. A microspheric form of Heterostegina depressa, d’Orbigny. X 10. 
. A megalospheric form of H. depressa. X 10. 
Purate 4. 
All magnified 5 diameters. 
Carpenteria balaniformis, Gray. Lateral aspect. Off Funafuti, 115- 
200 fathoms, 
. C. balaniformis, Gray. Oral aspect. Off Funafuti, 115-200 fathoms. 
. C. utricularis, Carter. Coloured by an alga. Lateral aspect. 
8 fathoms. Off Funamanu (Beacon Id.). 
. C. utricularis, Carter. Coloured by an alga. Oral aspect. Off 
Funamanu. 80 fathoms. 
. C. monticularis, Carter. Oral aspect. Off Funamanu. 80 fathoms. 
. C. monticwlaris, Carter. Oral aspect. Off Funamanu. 80 fathoms. 
. Polytrema miniaceum (Pallas), Off Funamanu. 150 fathoms. 
