G2 
Journal of the 
C. species v. — Cell ovate, broad below, scutum small, about the 
size of the aperture. Fenestra 10-12? Shallow excavation on 
one side for avicularium, on opposite side wanting. Superior 
process short, triangular, broad at the base. Back faintly 
striated, especially on the dorsal aspect of the superior processes. 
C. species vL — Cell ovate, rounded below, aperture large, 
scutum large. Fenestra 10-12. Avicularia minute. Back 
rounded, smooth, compressed. 
C. species vii. — Cell cuneate, scutum large, oval, with mesial 
line, and lines radiating thence to the very numerous small 
fenestra. Number of fenestra ? Superior processes sharply 
acerose, projecting backward. Back smooth, rounded, gibbous. 
Size about that of C. ventricosa. 
C. species viii. — Cell broadly cuneate. Scutum flat, small. 
Fenestra 7-9 ? Avicularia minute. Upper and lower processes 
very large. Upper process hollow, broad at the base, narrowing 
to a fine retroverted point, spreading slightly outwards. Back of 
cell gibbously carinate, faintly striated. Stria* very clear on back 
of processes. 
C. species ix. — Cell oblong cuneate, slender, and greatly 
attenuated towards the base, which projects forwards. Aperture 
large and prominent. The part round the aperture and upper 
part of scutum projecting in a convex form, sinking below to a 
flat surface, which joins the upward curve of the base. Scutum 
undetermined, but appears to extend low down, and follow the 
contour of the cell. A circular pore just above the base. 
Avicularia small, slightly inclined backwards. Superior process 
narrow at the base, inclined backward, and tapering above to a 
slender rounded point. On each side of the back a perfectly 
distinct lateral tooth or spine, extending outwards and backwards. 
The whole cell resembles porcelain, and is singularly graceful. 
Group 2. Vittatve. 
C. species x.—Cell elliptical, long, slightly curving forward at 
the base. Aperture and lateral processes occupy only one-third of 
length of cell. Vitta3 lateral. Avicularia deeply excavated, 
slanting forwards. No superior appendage. Front and back 
of cell smooth. 
