193 
NOTES ON SOUTH AUSTRALIAN MARINE MOLLUSCA, 
WITH DESCRIPTIONS OF NEW SPECIES.—PART VIII. 
By Jos. C. Verco, M.D., F.R.C.S. 
(From ‘Transactions of the Royal Society of South Australia,’ 
vol. vexit., 1908.] 
[Read June 2, 1908.] 
Puates XI. ro XIII. 
Emarginula subtilitexta, n. sp. Pl. xi., figs. 6, 7, 8. 
Shell ovate, rather thin, white. Apex well curved, one- 
sixth of the length from the posterior end. Convex anter- 
iorly from apex to margin ; posteriorly concave below the apex, 
then convex, then somewhat spreading near the margin. Slit 
narrow, margined by a low thin erect lamella. Posterior 
two-thirds closed; closing callus sunken, scalloped with trans- 
verse erect lamella convex towards the apex. Sculpture: 60 
radial ribs, low and flatly rounded, about one-half as wide as 
the interspaces, projecting beyond and crenulating the mar- 
gin. Concentric narrow erect lamelle rather crowded can- 
cellate the surface. Interior smooth and white. 
Dim.—T -igth, 65 mm.; breadth, 4°9; fissure, 1:4 mm.; 
height, 2 mr 
Locality.—110 fathoms, off Beachport, 1 dead. 
Diagnosis.—E. superba, Hedley, has the same number of 
radial ribs and the dentate margin, but has higher concentric 
lamelle. #. dilecta, A. Adams, has a similar sunken scal- 
loped slit fasciole, and nearly the same number of radials, 
rather more; but has ruder ribs wider than their interspaces. 
Puncturella (Cranopsis) corolla, n. sp. Pl. xi., figs. 1 to 5. 
Shell thin, roundly oval, depressed conic. Apex eccen- 
tric, one-fifth of the length from the posterior end, spiral, 
well curved backwards. Protoconch projects on the right 
side and consists of two whorls, the first turn and a half are 
smooth, convex, glistening; the second half turn, which in- 
creases rapidly, is minutely crowdedly granular; at the junc- 
tion of the two is a minute scar, the first part fitting into the 
second. In the adult shell the latter part of the protoconch 
looks directly backward. The sculpture of the shell begins 
gradually as accremental wrinkles, and next as radial riblets. 
Where the wrinkles commence the slit begins. The dorsum 
in front is a uniform conyex curve, behind it is a continuous 
concave curve. The perforation occupies the middle third 
of the dorsal slope, and is lanceolate. Between it and the 
G 
32 
