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670 EXPLANATION OF THE PLATES.<br />
Serpulid or Vei^meius-shcll, and forms several roots.] Re-<br />
duced to ono tliird nat. size.<br />
Fig. L. lotrocliota pwyurea. A small but symmetrically developed<br />
dry specimen from Torres Straits or its neighbourhood.<br />
Nat. size.<br />
M. /. haculifera. Portion of type (spirit) specimen on stone,<br />
from Port Darwin, between tide-marks. Nat. size. [The<br />
small pointed conuli are not quite so well marked on<br />
this as on the reverse side of the specimen.]<br />
N. Sclimidtia variahilis. The greater part of the type specimen<br />
(spirit), from Port Darwin, 7-12 fms. [Seen from<br />
the side, the true base is towards the right-hand margin of<br />
the plate.] Reduced to two thirds nat. size.<br />
0. PelUna aliformis. The type specimen (inspirit), from Port<br />
•Darwin, 7-12 fms. Seen from one side, one wing almost<br />
concealing the other. Nat. size.<br />
Plate XL.<br />
Fig. A. EcTiinodictyum glomeratum. Type specimen (dry), from<br />
Thursday Island, Torres Straits, 4-5 fms. Nat. size.<br />
B. PacJiijcJtcdina macrodacti/la, portion, including the second<br />
and third bifurcations above base, seen from the front. B'.<br />
Apex of branch from front, slightly inclined to one side<br />
to show lateral series of vents. Prom dry, somewhat<br />
macerated, specimen from Friday Island, Torres Straits.<br />
Nat. size.<br />
C. AmpJiilectus hisindidus. The greater part of the type (dry)<br />
specimen; the real base is on a shell (omitted) to the left.<br />
From Thursday Island, Torres Straits, 3-5 fms. Nat.<br />
size.<br />
D. Echinodictymn cancellatum. The lower part (about half of<br />
the whole) of the type (dry and macerated) specimen<br />
from Warrior Reef, Torres Straits. One third nat. size.<br />
,