Bd. HT: <)) 
'l'IIK FOSSK, FOR.-VMINIFEKA. 
7 
Tlie author however goes on to .show that the species includes many varieties 
and he gives diagnoses of some of these which may be summed up thus: — 
Coquille subarrondie, subtriangulaire, subquadrangulaire ou irrégulière; obtu.se en 
avant et en arrière arrondie sur le pourtour; les loges lisses ou ornées de fines côtes 
concentriques; ouverture arquée, munie d’une dent .simple en forme de lèvre.» He 
further gives the .size of his .specimens as. ranging in greatest diameter from 0.52 mm. 
to 0.86 mm. 
The present specimen is considerably larger than any of those figured by Ter- 
QUEM, its greatest diameter being 1.75 mm. It shows moreover no trace of costul- 
ation or striation on the surface of any of the chambers. In other respects and 
especially in the character of the aperture it agrees closely with Terquem’.S description 
as summarised above. 
Terquem’.S specimens were obtained from the »Pliocène supérieur» of the Island 
of Rhodes. 
Family Textularidæ. 
Sub-Family Cassidulininae. 
Genus Cassidulina, d’Orbigny, 1826. Te.st biserial, folded on its long axis, and 
then coiled more or less completely on itself. Texture hyaline. 
Cassidulina crassa, d’Orbigny. 
Plate II. Figs 2 and 5. 
Cassidulina crassa, d'Orbigny, 1839, Foram. Amer. Merid. p. 56, pi. VII, figs 18 — 20. 
Cassidulina crassa, Bkady, Report. Chall. 1884. p. 429, pi. LIV, figs 4, 5. 
Test ovate-oblong, biconvex, but more or less compressed; margin obtuse or 
rounded. Segments somewhat inflated. 
This well-known and cosmopolitan species is exceedingly well represented in the 
material trom the Pecten-conglomerate. As already stated five-siths of the specimens 
of Foraminifera obtained from that deposit are referable to this species. The speci- 
mens are very uniform in size the average long diameter being 0.5 mm. The state 
of preservation varies considerably. Some of the shells are as fresh as though they 
had been taken from recent waters; others are deeply stained and others much corroded. 
