some Species of Crisia. 473 
each zocecium, being much more pronounced than in C. den- 
ticulata, and this gives it a serrate appearance. ‘The denticle 
of C. acropora, Busk, is similar in position—namely, more or 
less behind the zocecium,—though much smaller, and no 
doubt these two species are closely allied ; also the species 
which I considered was the C. elongata, Milne-Edwards, 
shows great resemblance in having long straight internodes 
with only one branch to each internode, and that from the 
distal half of the internode ; but I am unable to consider that 
the elongata* I figured is the same as what Harmer calls 
elongata. 
The specimen from Port Elizabeth, 8. Africa, was sent to 
me by Miss Jelly, and has been overlooked. 
I have previously remarked on there being many massive 
and solid Bryozoa from §. Africa, and now we get this large 
Crista with branches about 0°42 mm. wide. 
Loe. Port Elizabeth, S. Africa. 
Crista oranensis, sp.n. (Pl. XVI. fig. 3.) 
From a quantity of dredged material from Oran (Algiers) 
there is only the fragment figured belonging to this species. 
It has an ovicell quite similar to that of C. eburnea, L., but 
the internode is apparently longer than in C. eburnea, then 
the basis rami reaches to the next zocecium, whereas in 
eburnea it is very short and of the “graft”? group. The 
zoarium is also wider, as is the base of the branch, and the 
surface-pores are more numerous. 
The zocecial tubes hardly project at all, which seems to be 
a character of C. eburneo-denticulata, Busk, and the ovicells 
of both are fairly similar, though the shape of the ocecio- 
stomes is not identical t=. A similarity of form will be seen 
between figs. 4 and 3, though it should be noticed that the 
scale of fig. 4 is only half that of fig. 3. The distance from 
zocecium to zocecium is only about 0:31 mm., whereas in the 
C. eburneo-denticulata, now figured, they are of the unusual 
distance of 0°} mm. Making some comparisons, when only 
a tracing was available on which there was no scale, led to 
my coming temporarily to a false conclusion. The joints of 
this species, of C. eburnea, and of C, eburneo-denticulata are 
all light, and no doubt they belong to the same group. 
From the Oran débris I picked out several other separate 
* See footnote t, p. 470. 
+ “ Résult. du Voyage du 8.Y. ‘ Belgica,’ Bryozoa,” Expéd. Antarct. 
Belge, p. 79 (1904). 
{ See footnote, p. . 475. 
