132 Rev. T. Hincks’s Contributions towards 
of calcareous matter. There may be about fifteen or sixteen 
of these openings round the cell, each of them occupying a 
kind of recess in the wall. In some cases a slender acuminate 
spine originates near the base of one of the larger spines above, 
and projects outward instead of bending over the aperture. 
VIII. FOREIGN CHEILOSTOMATA (Miscellaneous). 
Family Bicellariide. 
Dracuoris, Busk. 
Diachoris distans, n. sp. 
(Pl. V. figs. 4-6.) 
Zoecia elongate, slender, not expanded below, distant, sub- 
erect, entirely open in front; two long tapering spines at the 
top, and about four on each side, of which the uppermost pair 
is very small, and the pair below it usually larger than all the 
rest, the lower third of the margin destitute of spines; con- 
necting tubes six im number, long; on one side of the cell a 
large aviculariwm, usually placed below the third spine, pro- 
jecting considerably behind towards the base ; a long straight 
back extending from the projection to the beak, which is 
slightly bent at the point; mandible triangular, surface 
smooth and shining. Dorsal surface smooth, destitute of 
spines, with a round tubular projection at the upper extremity 
of considerable size, from which the radical appendage origi- 
nates. Occium (?). 
Loc. South Africa (Miss Jelly). 
This form resembles in some respects the Australian D. sp7- 
nigera, MacGillivray ; but there are not unimportant points 
of difference, and on the whole I believe they are rightly 
accounted distinct. a 
The cells of D. distans are of an elongate type and consi- 
derably larger than those of D. spinigera; they lie wider 
apart, the connecting-tubes being of more than ordinary length, 
and are very decidedly suberect. ‘The spines are not onl 
fewer in number, but different in character from those of the 
kindred species. The small half-rudimentary pair just below 
the top of the cell is very constant, and contrasts strikingly 
with the tall stout pair immediately following. In D. spini- 
gera the lateral spines, which generally extend to the bottom 
of the cell, are much more uniform in character. 
But the most marked differences are found in the avicula- 
ria. ‘There are normally two of these appendages in D. spini- 
