Miscellaneous. 471 
old naturalist there, Laughrin, and I also have a mounting of 
spicules from Belfast corresponding exactly with A. 
It is possible that C. Lacazei, Hérouard, is also a synonym of 
C. Montagui; but this could only be the case by supposing that the 
author has mistaken the position of some of the spicules, and that 
4, 12, and 13 belong to the summit of the pedicel, as 6 and 7 do 
to its sides, and 14 to the centre of the termination. 
The specimens B and C, in which I have failed to find the upper 
dermal bell-shaped spicules, were obtained at the same time and 
preserved in the same way, in spirits only, as A. I have often 
failed to find the small upper spicules of other Cucumarians where 
they ought to have been. How does this happen? Is it that these 
are the last developed spicules and only occur in adult individuals? 
Cucumaria Koellikeri, Semper. 
Semper’s work is not in my library; Ludvig’s reference to it is 
‘Reise im Arch. der Philippinen-Holothurien, pp. 287, 271, 
pl. xxxix. fig. 17. I have, however, many specimens of this species 
received at different times from the Zoological Station at Naples. 
The examination of the calcareous deposits in two specimens gives ‘ 
the following results :— 
Body-spicule with 3, 4, and up to 8 foramina, but by far the 
largest number with 4, the others being exceptional. The four- 
holed spicule differs, however, from that of C. Montagui (specimens 
A, B, C) in being shorter in proportion to the length. Moreover, 
these spicules are not only highly nodulous, but the nodules at their 
summits split, as it were, into little riblets, which riblets ultimately 
become minutely spinous. This is a peculiarity which I do not 
remember to have observed in any other spicule of this genus. In 
the second specimen the body-spicule agrees in character with the 
last, but those with many foramina are much more numerous, 8 
being here very common, and ranging thence up to 18; there is the 
same tendency of the nodules to break out into spine-points, but 
less commonly and markedly than in the first specimen. 
Upper Body-spicules—In the first I perhaps see two or three, 
but am unable te make them out satisfactorily ; in the second I 
cannot find any. 
Pedicel-spicules.—The lateral spicules in character like to those of 
British C. Montagui, but more generally dilated centrally and in 
that part with the foramina in double line. The spicula of the 
summit also and those of the tentacles do not exhibit any marked 
divergence from those of C. Montagui, but the larger of the last 
more generally with a double row of foramina, at least in their 
central portion. 
I think it is evident that these Naples specimens have been killed 
with acid, as in the first-mentioned not a single spicule is to be seen 
in the tentacles, and in the others only the larger forms. ‘This may 
account for the absence of the second form of body-spicules. 
