QUEENSLAND MOLLUSC AN NOTES, No. 1. 
269 
extent. The type locality of XL meridian a is Lake Macquarie, N.S.W., but the 
species ranges north to Torres Straits. The genus name MerOpesta is introduced 
with that species as type:* as it does not appear to be closely related to Eastonia 
(type, rugosa Gmelin, from Portugal), and the name Merope proposed for the 
Indian species by IT. and A. Adams in 1857 had been used previously by Newman. 
The new species now described is a true Standc/lu, differing from the 
type of the genus in form, the anterior side being more produced and the posterior 
more alternate. It was first collected by the Rev. Percy Hubbard, but I have since 
collected it at Townsville and the Daintroe River. 
Shell elongately oblong, thin, posteriorly attenuated, anteriorly rounded, 
inequilateral, umbones approximate, gaping at both ends. Colour white, covered 
with a very line periostracum only noticeable at the posterior end where it is 
thicker and wrinkled. Superficially the shell is smooth but under a strong lens 
it is seen to be finely wrinkled. Hinge-teeth exactly as in the type of St a ndella; 
somewhat delicate and apt to be broken in beach-worn specimens. Pallial sinus 
very long, rounded, reaching more than halfway across the shell ; adductor muscle 
scars small. Length 4;> mm. ; height 28 mm.; depth of conjoined valves 16 mm. 
Pharella wardi sp. nov. 
( Plate XXXI, figs. 5, 6, 7.) 
A tine bivalve dredged by Mr. Melbourne Ward in the Albany Passage, 
North Queensland, introduces a new germs into the Australian list as Pharella ’ 
was proposed by Gray (Ann. Mag. Nat. Hist., ser. 2, vol. xiv, p. 24, July 1884)' 
for javanica , and 1 name this as type. 
Shell large, elongate, equivalve, inequilateral, gaping at each end. Colour 
white, covered with a pale yellowish periostracum which extends a great deal 
at the edge. A white zone contrasts with a yellowish one, the periostracum much 
thicker and wrinkled at the posterior end. Shell smooth save for fine growth lines, 
the anterior end rounded, the posterior end short, obliquely rounded, the ventral 
margin a little convex, nearly parallel with the umbonal margin. Ligament large, 
external. Hinge and muscle sears normal. Inside white Length 72 mm ’ 
height 22 mm. 
Montfortia excentrica sp. nov. 
(Plate XXXI, %'s. 14, 15.) 
This name will replace that of Subemarginula elathrala of Tied ley’s list 
who explained his preference for it (Proe. Linn. Soe. N.S.W., xxxiv, 436,' 1909)’ 
excusing his rejection of paiihi Quoy and Gaimard on the grounds of purism’ 
There was no need of .excuse as panhi Q. and G. is quite different in shape from 
the Australian shell, and the choice of elathrala Ad. & Rve. was unfortunate, 
as not only did it refer to a distinct species hut the name was invalid. Thiele 
(Syst. Conch. Cab. 578te, lief. (Bd. vii. heft xxxvii) 19.17, p. 116, pi. 13 f 12-13) 
used pmhiensis Reeve and placed it in Hemitonia, but Swainson’s description 
reads, Patelliform : the fissure not cut through the shell, but merely forming 
an internal groove,” and this does not apply while the sole species, 1 L tricost at a 
i/ W ’Lp aS( ^ k° w - Cen., f. 6, is a West Indian form, so that we can use 
Montfortia Reel us, of which genus I designated 'Em. australis Q. and G as type 
( i fans. New Zeal. Inst., xlvii, 1914, p. 435, July 12, 1915). These tropical forms 
ii a y . e Y en Je congeneric;, but as the shell shows distinction I here propose 
Mont] ortis.ta as a new subgenus, with XL excentrica as type. 
