1865.] ON THE MARINE MOLLUSCA OF SOUTH AUSTRALIA. 155 
This small and tender but exceedingly beautiful species is gene- 
rally more or less abraded, but when perfect is easily recognized by 
the sculpture, which consists of distant, extremely slender riblets, 
each of which consists of, or is surmounted by, a series of minute 
granules. A rare variety is striped like the young of 4. pelta (A. 
strigillata, Nutt.) ; but in general it is more or less mottled, some- 
times delicately pencilled, like 4. fascicularis, Menke, from the Gulf 
of California. 
ACMA SUBUNDULATA, Angas. 
A. t. parva, tenui, ovali, altiore; extus colore pallide fusco- 
corneo, fusco varie maculata seu strigata, liris radiantibus ob- 
soletis vix undata; striis incrementi confertissimis ; vertice 
haud adunco, plus minusve antico, ad trientem seu ad duas 
inter quinque partes longitudinis sito ; intus fuscescente, fusco- 
nigro varie maculata seu strigata, nitida ; spathula plerumque 
tenebrosa ; margine haud conspicuo. 
Long. *52, lat. -4, alt. +22 poll. 
Hab. Port Lincoln, Hobson’s Bay (Archer). 
Var. ¢. intus pallidiore, strigis radiantibus angustis. 
_ 7. On THE Marine Moxuuuscan Fauna oF THE PROVINCE OF 
Soura AUSTRALIA: wiTH A List oF ALL THE SPECTIS 
KNOWN UP TO THE PRESENT TIME; TOGETHER WITH Re- 
MARKS ON THEIR Hasitats AND DisTriBuTION, ETC. By 
GrorGe Frencu Aneas, C.M.Z.S8. 
Having paid considerable attention to the marine conchology of 
South Australia during a residence of some years in that province, 
and possessing in my own collection examples of nearly every spe- 
cies enumerated in the following list, I have endeavoured to work up 
my materials, however imperfect, into a list of species bond fide in- 
habitants of that portion of Australia*. As so many of the earlier 
authors have described shells, giving either an unknown habitat or 
a wrong locality, it is of importance that those who, from personal 
observation, are in a position to do so, should give to the scientific 
world the benefit of their researches, especially when they are able 
to correct errors and add to our knowledge of the geographical dis- 
tribution of species. 
The province, or colony, of South Australia, properly so called, 
includes all that indented coast-line extending from the mouth of 
the Glenelg, near Cape Northumberland, on the south-east, to the 
head of the Great Australian Bight on the north-west, ranging 
from 129° to 141° of longitude east from Greenwich, and occupying 
a belt of latitude between 32° and 38° S. This extent of coast in- 
cludes the two deep gulfs of Spencer and St. Vincent, Kangaroo 
* Those species marked with an asterisk (*) are recent additions to science, 
and are described from the type specimens in my collection.—G. F. A. 
