1889.] LAND-SHELLS FROM KOROR. 113 
toa circular opening from the contraction of the inner shining portion 
of the peristome; no trace of tooth. Length 3 millim. 
Hab. Koror. 
3. DIPLOMMATINA RUBELLA, sp. nov. (Plate XI. figs. 3, 3 a.) 
Shell sinistral, oblong, conical, thick, inconspicuously rimate, red- 
dish or reddish white in colour: whorls 64-7 ; sculpture a fine close 
striation obliquely across the upper whorls, disappearing or very 
faint on the penultimate, coarse and distant on the last whorl, pen- 
ultimate the largest and most swollen, last whorl not ascending much 
on to the penultimate, with a slight constriction just above the co- 
lumellar margin: peristome very thick, about ; breadth of shell, 
the outer margin slightly or not at all dilated, striated between the 
margins, the inner portion continuous: aperture circular ; no tooth. 
Length 3 millim. 
Hab. Koror. 
4, DrPLoMMATINA AUREA, sp. noy. (Plate XI. figs. 4, 4a.) 
Shell dextral, ovate, fusiform, thick, of a yellowish colour, blotched 
with black upwards: whorls 73 ; texture smooth, except a few (3 or 4) 
coarse ribs across the 3rd and 4th whorls, and some faint striation on 
the penultimate, chiefly just above the aperture; penultimate whorl 
the largest, constriction very faint; last whorl not ascending much on 
to the penultimate: peristome much thickened, about 7 breadth of 
shell, not dilated at its outer margin, striated between the margins ; 
inner portion of lip continuous: aperture circular; a small incon- 
spicuons swelling on the columellar margin where a tooth is present 
in other species. Length 4 millim. 
Hab. Koror. 
5. DIPLOMMATINA CRASSILABRIs, sp.nov. (Plate XI. figs. 5, 5a.) 
Shell sinistral, tumidly fusiform, not rimate, thick, pale yellowish, 
blotched with black: whorls 63, the antepenultimate the largest ; 
sculpture a fine close, regular, oblique striation across all the whorls, 
a fold generally present on the last whorl at a little distance from 
the peristome ; last whorl not ascending much on to the penultimate ; 
a rather prominent constriction present on the penultimate above the 
columellar margin: peristome very thick, more than 3 breadth of 
shell, not dilated at its outer margin, the shining inner portion not 
much expanded, continuous round the apex of the aperture in only 
a very thin layer across which the striation of the penultimate whorl 
is continued: aperture vertical, oblong ; a small tooth on the co- 
lumellar margin, below this a semilunate ridge is present, which runs 
back into the shell but not quite to the opposite margin. Length 
23 millim. 
Hab. Koror. 
6. DiPLOMMATINA ALBATA, sp.nov. (Plate XI. figs. 6.) 
Shell sinistral, oblong, not rimate, thin and transparent white, 
shining: whorls 63, the antepenultimate and penultimate much 
