532 JOURNAL OF SCIENCE. 
lapping plates. Shell globose, imperforate, of several slowly in- 
creasing whorls. Type Helix kiwi, Gray. 
Genus Thera, Animal and jaw as in Patula. Shell conical, 
high, perforate, hairy. Type Helix stipulata, Reeve. 
Sub-genus Calymna. A sub-genus of Amphidowa distinguished 
by the shell being ribbed. Type Amphidoxa costulata Hutton. 
Genus Otoconcha. Animal limaciform; no mucous gland; 
shell external, of a few rapidly increasing whorls, covered by the 
mantle. Jaw with distant ribs; marginal teeth quadrate. Type 
Vitrina dimidiata, Pfeiffer. 
Genus Psyra. Animal and jaw as in Charopa. Shell imper- 
forate, or narrowly perforate. Type Helix venulata, Pfeifter. 
Genus Pyrrha. Animal helicitorm ; tail with a mucous gland ; 
jaw with flat ribs; marginal teeth quadrate. Shell thin, of 44 to 
53 Slowly increasing whorls; sub-perforate. Type P. cressida, 
Hutton. 
Genus Elea. Animal heliciform; jaw none; all the teeth 
aculeate. Shell small, widely umbilicated, of a few rapidly increas- 
ing whorls; epidermis thin, not involving the peristome. Type 
Helix coresia, Gray. 
LINNEAN SOCIETY OF NEW SOUTH WALES. 
Sydney, May 30th, 1883.—Rev. J. E. Tenison-Woods, F.L.S., 
Vice-president, in the chair. 
New members—T. Whitelegge and H. Deane, M.A., M.I.C.E. 
Papers—(1) ‘‘ Notes on the Lower Jaw of Palorchestes azael,’ 
by Charles W. De Vis, B.A. A fine specimen of the right ramus 
of the lower jaw of a young Palorchestes azael, now in the Bris- 
bane Museum was tully described in this paper. Reference was 
made to Professor Owen’s account of an adult jaw of the same 
species (Foss. Mamm. Aust. Pl. cvi.); and the relations of Palor- 
chestes to Sthenurus, Macropus, Protemnodon, &c., discussed as fully 
as the evidence allowed. The author regards it as a true saltigrade 
of the Macropod type, closely allied in many respects to Sthenurus, 
though with a premolar of a quite distinct character. A cast of 
this fossil was exhibited by Mr Macleay. 
(2.) “*Synonymy of Australian and Polynesian Land and Ma- 
rine Mollusca,” by John Brazier, C.M.Z.S., &c. In this paper the 
author traced the synonymy of Patella aculeata, Reeve; Natica 
incei, Phil.; and some others, besides rectifying the identification 
of Lucina dentata, Jay, which has by most authors been confounded 
with ZL divaricata, Linn. 
(3.) ‘‘On some Mesozoic Fossils from Central Australia,” by 
the Rev. J. E. Tenison-Woods, F.G.S., &c. The author de- 
scribes the nature of the deposit from qualitative analysis and 
microscopic examination ; noticing the occurrence of various fossils 
too imperfect tor specific identification. The author describes also 
the two new species Trigonia mesembria, a clearly cretaceous form 
of the section ‘‘ Glabre,” and Pecten psila, which the author con- 
siders may only be a variety of P. socialis, Moore. He also de- 
scribed a Belemnites, probably B. australis, Phillips, of a very _ 
aberrant type of the section “ Hastati.” In conclusion, he con- 
sidered that as many of Moore’s Wollumbilla (Jurassic) fossils 
were found in this formation, there was either a confusion of type, — 
