226 MR. O. A. L. MORCH ON THE GENERA [Nov. 1], 
Australia are generally darker in colour, and have the bands more di- 
stinctly marked, than those found in Victoria and New South Wales. 
Hoplocephalus superbus is not found in New South Wales. 
It is perhaps only a variety of H. curtus. 
Hoplocephalus nigrescens.—A rare Snake. The few specimens I 
found of this species were all captured at Middle Harbour, an inlet 
of Port Jackson. I have never seen it from other parts of Australia. 
Hoplocephalus temporalis I captured, more than two years ago, at 
Port Lincoln, South Australia. I have also seen specimens from 
Albany, King George’s Sound. No doubt a great many more species 
of this extensive genus will be discovered ; in fact, I know of three 
new ones already, which will be described shortly. 
Pseudechis porphyriacus.—Inhabits the greater part of the conti- 
nent in the north. The brown variety, with bright yellow or orange 
belly, is the most common, On the Lower Murray both varieties 
occur. 
Pseudonaia nuchalis—Common near Sydney, on the Hunter and 
Clarence Rivers. 
Brachysoma diadema is also an inhabitant of this neighbourhood, 
and is frequently captured in the northern part of New South Wales 
and in Queensland. 
Vermicella annulata.—Rarely obtained in this neighbourhood— 
I suspect, on account of its nocturnal habits. Found on the east 
coast, from Twofold Bay to Brisbane, and no doubt ranges still fur- 
ther north, 
4, On tHE GenERA oF MOLLUSCA ESTABLISHED BY H. F. Link 
IN THE CATALOGUE OF THE Rostock Museum. By O. A. 
L. Moreau. 
In the ‘ Proceedings of the Zoological Society’ for the year 1851 
there is an abstract of the Catalogue of the Rostock Museum, by 
the late Dr. Herrmannsen, the continuation of which was prevented 
by his early death. Of the work, which appeared as a University 
program, only a few copies comparatively were distributed, the greater 
number haying been preseryed in the stores of the University. 
Oken appears to be the only naturalist who had any aequaintance 
with the work until it was mentioned in the ‘Index Malacozoorum.,’ 
The second part, containing the Mollusca, appeared on the 29th 
March 1807. 
Lituina, Link, p. 84, is established upon Nautilus spirula, L. ; Mar- 
tini, i. t. 20. figs. 184, 185. 
Ammonia, Breyn, has the priority. 
The Gasreropopa are divided into three sections— 
1. Diphonobranchii, with a notch in the fore part of the aper- 
ture, corresponding to Lamarck’s Zoophaga. 
2. Adelobranchii, corresponding to Lamarck’s Phytophaga, 
3. Dermobranchii, containing the non-spiral shells, as Calyp- 
trea, Patella, Fissurella, Chiton, 
