CATENICELLID-. 181 
(d.) Vittate. 
Cells furnished with a narrow elongated band or ‘‘ vitta” on each side ; 
without fenestre ; ovicells galeriform, not terminal. 
C. perforata, Busk, Zc, ~. 10. Cells elongated oval ; avicula- 
rium processes large, perforated at the base, or by several openings ; 
vittee long, wider below, lateral ; surface in front papillose. 
New Zealand (Hooker, Lyall, Darwin). Tasmania. Australia. 
C. ringens, Awsk, 1c, p. 10. Cells ovoid or sub-globular; 
avicularia usually very unequal, the larger one gaping ; vitte anterior, 
broad ; surface in front smooth. 
New Zealand (Dieffenbach). South Africa.’ 
C. elegans, Busk, /c., p. 10. Cells elongated ovoid ; avicularia 
large and projecting, without any superior appendage ; vitte narrow, 
sub-lateral, surface in front papillose. 
Port Cooper. Banks Peninsula. Bass Straits, 47 fathoms. South 
Africa. Port Dalrymple. 
C. cornuta, Ausk, Voyage of Rattlesnake, 1., p. 361. Cells 
oval; avicularia in most cells wholly transformed into long pointed 
retrocedent spines, on one or both sides, in others into shorter spines or 
unaltered ; vittae linear, extremely narrow, entirely lateral, and extend- 
ing the whole length of the cell from the base of the avicularium. 
Surface in front smooth. Yellowish-white. 
New Zealand (Darwin). Bass Straits. 
(c.) Simplices. 
Without vitte or fenestre. 
C. scutella, Hutton; C. alata, Hutton, CMM. p. 89; not of 
Wyv. Thomson. Cells ovate, narrowed below ; lateral processes pro- 
jecting horizontally and forwards from the whole length of the cell; \ 
mouth round, simple, with a thickened rim, placed in the upper part of 
the cell; surface smooth, with a single median pore (fenestra?), and 
occasionally another on each side of it. 
Lyall Bay. 
GC. geminata, Wyv. Thomson, Nat. Hist. Rev., 1858, O.7-IS. 7, 
p. 147. Axial cell, geminate. The secondary cell developed alter- 
nately on either side of the axis. Axial cells, pyriform ; a large gaping 
avicularium on the angle opposite the secondary cell ; secondary cell 
giving off by a terminal horny tube a single wedge-shaped peripheral 
cell; cell mouth, large ; a deep notch in the centre of the lower lip ; 
in the primary and secondary axial cell four or five blunt spines 
surround the upper margin of the mouth, which is surmounted in the 
peripheral cells by two longer ear-like processes; front of cell tuber- 
culated. 
A small species epiphytic on red alge. 
New Zealand (Dr. Joliffe). Australia. 
