334 JOURNAL OF SCIENCE. 
colonial individuals are imbedded. 1 species. Possibly a transi- 
tion form between Asconide and Leuconide. 
Il. Subordo Heterocela.—Calcispongiz, the entoderm of which is 
differentiated into pavement- and flagellate cells. 4. Familia Sy- 
conide,—Heteroceela with sac-shaped radially disposed ciliated 
chambers, opening directly into the gastral cavity. I. Sub- 
Familia. Syconine.—Syconidze with terminally free, simple, 
ciliated tubes. 7 species. II. Sub-Familia. Uteinz.—Syconide 
with simple, ciliated tubes joined terminally by a cortex. 6 species, 
III. Sub. Familia Grantine.—Syconide with ramified ciliated tubes. 
3 species. 5. Familia Sylleibide.—Heterocoela, with sac-shaped 
ciliated chambers, which are connected with the gastral cavity by 
a system of exhalant canals. I. Sub-Familia. Vosmaerinz.— 
Sylleibide, the ciliated chambers of which form a simple cylin- 
drical layer.» (Leucetta,:. Pol:) > 3 "species:| | T.- Sub-Paraiia: 
Polejne.—Sylleibidz, the ciliated chambers of which lie in a 
folded plane. (Leucilla, Pol.) 1 species. 6, Familia Leu- 
conidz.—Heteroceela, with spherical, ciliated chambers. 19 
species. 7. Familia. Teichonide.—Heteroccela, the surface of 
which is differentiated into one bearing oscula, and one bearing 
inhalant vores. 3 species. 
(6) *‘ Notes on the direction of the hair on the back of some 
Kangaroos,” by N. de Miklouho-Maclay. The peculiarity of in 
verted hair on the back of some of the kangaroo tribe is traced by 
the Baron in the genera oreopsis, Dendrolagus and in one species of 
Osphranter (Osphranter rufus). The paper also contains some re- 
marks on the dentition of Dendvolagus dorianus. 
(7) “Note on Tribrachycrinus Clarkei, M‘Coy,” by F. Ratte, 
M.E. The previous descriptions of this fossil were taken from im- 
perfect inner casts only. Mr. Ratte has now been enabled to 
describe thoroughly and illustrate this beautiful crinoid from an 
outer cast of the calyx in the Australian Museum. The most im- 
portant additions to previous descriptions are the ornaments of 
the surface of the calyx, the attachment of the first brachial article 
and the plates of the roof of the calyx. 
(8) “On the Larve and Larva Cases of some Australian Aphro- 
phoride,” by F. Ratte, M.E. This paper describes the larval 
state of some small species of Rhynchota, closely allied to the genus 
Aphvrophova, and belonging probably to the genus Ptyelus. They 
are as yet imperfectly known; but the description of their larva 
cases and of some of the larve discloses a feature probably quite 
new to the science of entomology. These cases, unlike those of in- 
sects generally, are true shells, containing at least three-fourths of 
carbonate of lime, and resembling in shape some fossil and recent 
serpule, some being conical, others serpuliform, or helicoidal. The 
conical shells are fixed on the branches of some species of Euca- 
lyptus, the mouth turned upwards, the larva being placed in it 
with the head downwards. It introduces its suctoriak apparatus 
into the bark of the stem, sucks the sap of the tree, and emits from 
time to time by its anus, drops of clear water. This property of 
emitting water is possessed by all the family. 
The Hon. James Norton exhibited male and female cones of 
Avaucavia Cookt, now to be seen in full fructification in the North 
Eastern Division of Hyde Park. Mr. Norton observed that this 
tree inits earliest stages was not distinguishable from <Avaucana 
