41 
Microscopical Society of Victoria. 
parallel with the pinna, urceolate, contracted towards the oblique 
entire aperture. Sarcothec* hi thalamic, with slender pedicles, two 
abreast behind and one in front of each hydrotlieca, one on a 
separate short intemode between every two hydrothecas, one on 
the lower part of each stem-internode, two in each axil, and a 
few slender, tubular ones on the liydrorhiza. A short proximal 
internode on each pinna without appendages. 
Gonothecasl Colour, yellowish brown, pale, transparent. Hab. 
Griffiths’ Point (Mr. Goldstein). 
P. Goldstkim. n. sp. Plate XV, fig. 7. 
liydrorhiza delicate, flat, with transverse markings at short 
intervals along the margins ; shoots pinnate, about one-sixth of an 
inch in height, pinme alternate, gracefully recurved, one borne 
near the summit of each internode. Hydrotlieca;, three or four 
on a pinna, lather distant, the base raised on a vertical process of 
the pinna, and the body of the cell thence directed downwards to 
the pinna, where it is recurved and terminates in an aperture 
looking directly upwards; the base of the hydrotheca separated 
from the process of the pinna by an oblique septum, which is 
continued for a short distance into tlio cell, forming a rudimentary 
intrathecal ridge; three or four slight constrictions in the pinna, 
radiating from the hydrotlieca. Sarcothec® bithalamic, with slender 
pedicles, one slightly below the middle of each stem-intemode, one 
in each axil, two abreast behind, and one in front of each 
hydrotlieca, and one between every two hydrotlieca;, on a separate 
short internode. A short proximal internode on each pinna 
without appendages. 
Gonothecml Colour, pale yellowish, transparent. Hab. 
Queenscliff. 
A very beautiful species, the back part of the calycle, with the 
process from the pinna, forming together an erect, nearly conical 
body, with a rounded summit. 
P. hyalin a. n. sp. Plate XV, fig. 9. 
Hydrorhiza delicate, stems flexuous, pinnate, from one-third to 
one-half an inch in height; each internode usually with from one 
to four transverse wrinkles; pinme rather distent, alternate, one 
