'Alert' 1881-2

EXPLilTATTOX OF THE PLATES. 671
Fig. E. Stelletta purpurea. One of the larger specimens from
above, showing {e) vent. In spirit. West Island, Torres
Straits, 7 fms. Nat. size.
r. Clathria coppinrjcri. The type specimen (dry), from
. West
Albany Island, Torres Straits, 3 fms. One third nat. size.
[The margins are slightly reduced by fracture.] F'. The
same ; two meshes, from front, from specimen in spirit
Island, Torres Straits, 3-4 fms. Nat. size.
G. Myxilla arborescens. About one half of type specimen (in
spirit), from Port Jackson, 0-5 fms. Nat. size.
H. Tethyopsis dissimilis. Larger of the two specimens from
Port Darwin, 7-12 fms. Inspirit. Nat. size. [Imperfect
above and below.]
I. Clathria acuUata. The type specimen, from Thursday
Island, Torres Straits, 3-4 fms. In spirit. Nat. size..
J. Raspailia hifurcata. The type specimen (in spirit, but
macerated), from Prince of Wales Channel, Torres Straits,
5-7 fms. Nat. size.
K. Esperia pellucida. One lobe of type specimen, with part
of incrustation involving stones &c. ; in spirit j from Alert
Island, Torres Straits, 7 fms. Nat. size.
L. EJiaphldoplilus arborescens. The type specimen (dry),
from Friday Island, Torres Straits. Two thirds nat.
size.
Plate XLI.*
Fig. A. Hipposponrjia derasa. The type specimen, from West
Island, Torres Straits; dry, macerated. Seen from the
longest side. Reduced to two thirds nat. size.
B. Dysidea semicanalis. The type specimen, from North-east
coast of Australia ; dry and macerated. Eeduced to one
half nat. size.
* The microscopic details in this and the following Sponge-plafes have been
in almost all cases prepared with the aid of sketches made to scale by Mr. Eidley
himself.
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