Bryozoa from the Wand AGEE and Nooncanbah Series 171 
(Permian) of Western Australia. 
Remarks: From Fenestrellina horologia (Bretnall) this species is 
distinguished by its larger size, by having more zooecia to a fenestrules, 
and by its large nodes. Fenestrellina jjulchrador salts (Bassler) is a larger 
s])eeies, and does not show large nodes. 
Fenestrellina lennardi sp. nov. (Text figure lA.) 
Holotvpo: Specimen 20f)48a, University of Western Australia Uollection. 
(Coll C. Teichert.) 
Horizon and locality: Highest beds of the Nooncanbah Series; South 
side of Mt. Marmion, Kimberley District. 
Fenestrellina with one aperture to a fenestrule; carina slight; nodes 
small. 
The form of the colony is not shown; there, are about 31 fenestrules 
vertically, and about 22 branches horizontally, in 10 mm. The branches are 
straight and flattened, and show a slight, rounded, rather wavy carina; small 
nodes are developed, but are not well shown. The branches are relatively 
very broad, being from 0-24 to 0-32 nmi. in width; the zooecial apertures 
are circular, 0-1 mm. in diameter, and are suiTounded l>y slight jieristomes; 
they are usually very regularly placed, one occuring opposite the end of 
each dissepiment. The distance between the centres of successive apertures 
is from 0-29 to 0-38 mm., and about 31 occur in 10 mm. The fenestrules 
are oval, from 0 17 to 0-25 mm. in length, and generally about 0.21 mm. 
in width; the width of the dissepiments is about 01 mm. The 
reverse surface is not shown. Bifurcation occurs at relatively distant inter- 
vals, and increase to three rovs of zooecia occurs just before branching. 
Remarks: The small size of this species, and the arrangemenf of the 
zooecial apertures, separate it from associated s])ecies. 
Fenestrellina cacuminatis s]>. nov. (Text figure IB.) 
Holotype: Specimen 20944a, I'niversity of AVestern Australia Collection. 
(Coll. A. Wade.) 
Horizon and localitj' : Nooncanbah Series : Keevie’s Well, 8 miles North 
of Mt. Anderson Homestead. 
Fenestrellina with three zooecia to a fenestrule; carina slight; nodes 
small, sharp, evenly spaced. 
The form of the colony is not shown ; there are 14 fenestrules vertically, 
and 22 branches horizontally, in 10 mm. The branches are straight, about 
0-25 mm. in width, and the carina is formed principally by the junction of 
the sloping sides of the branches; the nodes are small and sharp, but not 
high, and are placed from 0-24 to 0*29 mm. apart. ,'The apertures are 
circular, 0 08 mm. in diametei', and are ])Iaced on the sloj)ing sides of the 
branches; slight peristomes are developed, and where they an' well-i)reserved 
the apertures project slightly into the fenestrules. The distance Ix'tween the 
centres of successive apertures is from 0-22 to 0-27 mm., and about 42 
occur in 10 mm.; there are three apertures to a fenestrule — one of these 
may be placed opposite the end of a dissepiment. The fenestrules are oval, 
from 0-52 to 0-03 mm. in length, and from 0-17 to 0-25 mm. in width; the 
dissepiments are about 0-12 mm. wide. On the obv^erse surface the dissepi- 
ments when slightly worn, show a few transverse grooves. The reverse 
surface is not shown. 
Remarks: This species is distinguished from Fenestrellina pulchradorsalis 
(Bassler) by its narrower branches and dissepiments, and smaller size. F. 
affluensa (Bretnall) is a larger species. 
