FROM THE FUNAFUTI ATOLL. 3 
is taken to include an account of several new forms; but this 
does not exhaust the collection in hand, which it is hoped will 
fnornish interesting material for further papers on the same 
group of animals. 
The localities at Funafuti are given in their relative positions 
around the atoll from N. EB. S. to W. 
FORAMINIFERA. 
Family MILIOLIDA. 
Subfamily PENEROPLIDIN®S. 
PENEROPLIS, Montfort [1808]. 
Subgenus novum Monatysiprum. 
Remarks on the Subgenus.—Test porcellanous, shell-wall very 
thin ; surface usually covered with minute tubercles, sometimes 
smooth or highly polished and with vertical rows of puncta (not 
perforations). Segments sub-globose, flattened or elongate, 
at first arranged in a spiral, afterwards rectilinear. Aperture 
simple, either a circular inverted orifice or an everted phialine 
termination. 
This subgenus is intended to comprise the long delicate crosier- 
shaped specimens of which “Nautilus litwus,” Gmelin, is the type. 
These particular forms were represented in the ‘ Challenger’ 
collections by imperfect specimens, described by Dr. H. B. Brady 
under the generic name Peneroplis. The Funafuti material has 
yielded some good examples of these forms; and in the light of 
these it now appears convenient to distinguish the specimens 
subgenerically at least, on account of their dimorphic character *, 
and especially since their apertures differ from the typical 
cribrate or dendriform orifice of Peneroplis proper, or Spirolina, 
and are similar to Nodosaria or Sagrina of the hyaline group. 
It is possible that d’Orbigny’s Nodosaria punctata f is a frag- 
ment of one of the tuberculate forms of Wonalysidiwm. 
PreneRoPiis (Monatysipium) Sonnasi, subgen. et sp. nov. 
(PL. 1. fig. 6.) 
Test consisting of a flat coil of sub-oval segments, which 
afterwards become a straight series with subglobular or slightly 
compressed chambers. Terminal orifice with a neat everted 
* In the sense employed by Prof. Kitchen Parker. 
+ See ‘ Foraminiféres’ in Sagra’s. Hist. Cuba, 1839, p. 14, pl. 1. figs. 4, 5. 
1 * 
