Mr. A. W. Waters on Australian Bryozoa. 3 
Membranipora pyrula, Hincks. 
Membranipora pyrula, Hincks, Ann. & Mag. Nat. Hist. ser. 5, vol. viii. 
p-. 31, pl. i. tig, 2; MacGillivray, Zool. Vict. dec. xiii. p. 103, 
pl. exxvii. fig. 1. 
Membranipora lineata, MacGillivray, Zool. Vict. dec. iii. p. 84, pl. xxvi. 
fig, 3 
The spines in the Green Point specimen are not so stout as 
those figured by MacGillivray in the thirteenth decade, but 
somewhat stouter than those figured by Hincks. 
Hab. Bass’s Straits, Victoria; Green Point, Port Jackson. 
Membranipora levata, Hincks. 
Membranipora levata, Hincks, Ann. & Mag. Nat. Hist. ser. 5, vol. x. 
p. 467, pl. xix. figs. 6, 6a. 
The ovicell may be smooth or the umbo may form a keel. 
M. trregularis, B., as figured by Smitt in his ‘ Floridan 
Bryozoa,’ is similar in shape and general characters, but the 
avicularia are wanting. 
Loc. Houston Stewart Channel, 15-20 fath., and Cum- 
shewa, British Columbia; Green Point, Port Jackson. 
Membranipora lineata, L., var. (Pl. II. fig. 16.) 
There are specimens from Green Point which differ from 
the typical Uéneata in having a small round globular ovicell 
without any rib. In one specimen the zocecia are connected 
by tubes forming an areolated space, and on some of these 
interzocecial connexions there are small triangular avicularia. 
Similar connexions occur in M. ctircwmcelathrata, H., in Jf. 
acuta, H., and sometimes in MW. lineata, L. 
The present form differs from J. circumelathrata in having 
small avicularia instead of large prominent ones. It is 
very much like J. pectinata, MacG., but its zoccia could 
not be described as large. 
Membranipora cervicornis, Busk (non Haswell). 
Membranipora cervicornis, Waters, Quart. Journ. Geol. Soc. vol. xlili. 
p. 47, which see for synonyms. 
In the specimen from Green Point the spines have all been 
worn off, but the shape of the opesial opening, together with 
the widely open ovicell, suffice for the determination. 
Loc. Living}: Victoria; South Australia ; pee Straits ; 
