A Review of the Land Mollusca of Western Australia. 
21 
but in none is the spivo shorter than the aperture. Measurements read 
length, 40 mm. by breadth, 20 mm. (typo), 38 by 22, 38 liy 20, 3.') by 20 to 
32 by 20. These may be called B. r. grantianus subsp. nov. Another fine 
serie.s from Kab))it Island (not Rabbit Island in King George’s Sound) are 
similar in size and form to the preceding, but are paler throughout, and are 
here named B. r. wrightianus subsp. nov. The markings are always paler, and 
pallid shells are more' numerous, while these arc^ gimerally smaller, all the 
largest one.s being streaked. Onh’ one a])proaches the normal Gunton Island 
form coloration, and the measurements of the streaked shells are length 36 mm. 
by breadth, 21.5 mm. (type), .'Ui by 20, and 35 by 21 mm., while the pale 
unicolor shells measure 34 by 21, 34 by 20 and 33 by 17 mm. The shells 
from Woody Isle are a little .smaller, with a jiale cream zone below suture, and 
a pale patch on liase, the whorl being brown streaked with dark purplish 
brown, the streaks almost coalescing on the last whorl and forming a broad 
band. The measurements are, length, 31 nun. by 17 mm., and 30 mm. by 18 
mm. This may be called B. r. perspectus subsp. nov., and this leads to the 
mainland Esperanee form. 
The mainland shells, collected commonly at Esperanee, recall melo, but 
arc generally lar,gcr and paler. Pilsbry has figured this as maciilifents, fig. 14, 
but as his figs. 12 and 13 of maenlif erus are alike in colouring, and are larger 
and are part of a lot from the Recherche group, nuicuNf nriis becomes a 
synonym of rhodo^tomus. 
Some hundreds of shells were collected at Esperanee crawling on grass 
and bushes after rain, and these are quite constant, although the streaks vary 
in number, the colouring is pah', and none is dark as the island forms, and 
this is here described as a distinct species. 
Bothriembryon esperantia sp. nov. 
Plate TI., fig. 8. 
Shell plumply elongate, not as broad as hnlla, with less sculpture, the 
spire conical as long as the a|)erture, whorls rounded, the columella reflected 
over the umbilicus but still leaving a notable chink, shell solid. Coloration 
greyish white s]iarsely flamed -with irregular streaks of dull pinkish brown, 
the ground colour dominating the coloration. A))e\' flnc'ly punctate, a little 
more eh'vated than that of typical melo, the adult scul])lure rough, irregular 
radial growth ridges with very little cross scul])ture and no decussation 
notable in some cases; in other rather coarsely granulose as the one described 
and figured by Pilsbry (p. 6, pi. 1., fig. 14) which is here refigured, the form 
and coloration being diagnostic. Length 23 mm., breadth 15 mm. The 
largest measures 26 mm. by 16 mm. 
Bothriembryon balteolus sp. nov. 
Plate IT., fig. 9. 
Many shells from the Esperanee Malice Belt district, 50 miles south of 
isTorseman, Madui'a, Salmon Gums, are all dead and agree in showing a strong 
banded coloration. ” 
In form the shells recall huUa, but the s])ire is not so exsert and they 
must be near to rliodostomnff geograidiically. The shells ha\ e the s]nre defin- 
itely less elate than the Esperanee coastal species, with the seul)iture more 
regular almost producing a cancellation on the penultimate ivhorl and shoulder 
of the last w'horl. The ground colour is ebalky-wdiite with a nai'row purple 
peripheral band and a large purjdc circumbilical patch. The columella is 
