36 
Tom Iredale. 
The original description of barretti reads: ‘‘Shell elongate, dirty white, 
aperture about equal to length of spine (spire). The apex is sculptured with 
a curious fine wrinkling, which develops into line radials which are later 
crossed by revolving lines. This causes a. mat-like appearance of rather 
longitudinal nodules, wTiich, however, disa])pear uijon the base. A young e.x- 
aiuple shows the spiral sculpture iiiucli more prominently than in the adult. 
There is an umbilical chink pi'csent, and the outer lip is sharp. Whorls, six; 
length, 27 mm. ; breadth, 15.5 mm. 
Th(' type of B. barretti was collected near Hampton inside the Western 
Australian boundary. 'rat('’s locality, ‘‘Bunda Plateau” also cro.sscs the boi'dcr 
line, and in a series sent to Pilsbry he ligured two variations, the general label 
being ‘‘Kucla.” Among the shells before' me now there are also two varieties, 
and it is now seen that the coaslal shells are narrower than the more inland 
ones. I’pon referring to the rainfall again, that is given as being 20-25 inches 
on the coast, and only 15-20 inches in the inland area. The narrow form was 
figured by Pilsbry, f. 63, and his ispecinn'ii is here religured as type of a sub- 
species, B. b. indictus nov., the shell measuring 30 mm. in length by 15 mm. 
in width, the series coming from Eucla. 
Bothriembryon distinctus sp. nov. 
Plate IT., fig. 43. 
A series of shells from Cardanumbi, west of Eyre, is of great interest, 
the shells having an acuminate sjiire with a swollen body wlioii. This shape 
is not .seen in any other series, the Itingii being elegantly slender, while the 
melo forms are regularly oval. 
The coloration is dirty white in the dead shells examined. The apex is 
not elevated, wrinkled, Ihe vvi'inkliug being succeeded by a punctation, no 
subvarix vi.sible, the adult sculpture' being ol' the usual rough radials, some- 
what subdued, and crossed by tine concentric lines, irr('gnlarly forming 
squarish nodules, Avhich disa])pear aItog('ther on the body whorl, only faintly 
discernil)l(! on the penultimate one, and never very strong on any of the earii('r 
whorls. Although the umbilicus is open, the bi'oadly rellected columella hides 
it, the mouth is rather large, the outer lip thin. The spii'e is longer than the 
aperture but the body whorl is large and dominant. The h'ligth of the type 
is 27 mm., breadth 15.5 min., length of the aperture 12 mm., the breadth of 
the pi'iiultimate whorl !) mm. 
The locality is in the annual I'ainfall 10-15 inches belt, and from the 70- 
mile tank at Balladonia similar shells have been sent along with barretti. 
As above stated, this sjiecies does not fit into any of the named sub- 
generic groups so is here differentiated as Celatembryon subgen. nov. 
FAMILY LAOMIDAE. 
Though this family name is continued, it may need revision as all the 
Australian forims have unarmed mouths, and a distinct shell apjiearanco, the 
Xeozelanic typical Lrioma having teeth in the aperture, and a different shell 
texture. However our shells appear to be of Paralaomid alliance, and that is 
a Neozelanic group with .suggested relationship to Luoma. 
Gemis WESTRAIiAOMA gen. nov. 
Ordinary looking Paralaomids in general appearance, but with the 
protoconch concentrically spirally striate. The shells are small, generally 
under 3 mm. in breadth, and 1.50 mm. in height, depressedly conical with 
