244. Mr. H. Fulton on some supposed new 
Diplommatina onyx, sp. n. 
Shell dextral, imperforate, ovate-conic, pale yellow, rather 
solid; whorls 7, convex, ornamented with very faint oblique 
costee, penultimate whorl a shade larger than the last; aperture 
subcircular; peristome solid, with raised inner margin; 
columella rather thick, vertical, with a strong and prominent 
entering plait. 
Alt. 22 millim.; diam. maj. 1} millim. 
Hab. Busau, N. Borneo (Hverett). 
Compared with D. plecta this form is smoother, has no 
transverse fold, the columella is vertical, not oblique, and 
the peristome is of a different shape. 
Diplommatina plecta, sp. n. 
Shell dextral, imperforate, subfusiform, pale red-brown, 
subpellucid; whorls 7, convex, ornamented with somewhat 
inconspicuous oblique coste, penultimate a trifle larger than 
the last whorl; aperture subcircular; peristome moderately 
thickened, inner margin raised; columella thin, oblique, 
directed outwards ; columella plait somewhat prominent; an 
interior transverse fold is seen from front of last whorl, 
situated a little below and parallel with the suture. 
Alt. 23 millim.; diam. maj. 1) millim. 
Hab. Kina Balu, N. Borneo (Lverett). 
Somewhat similar in form to D. baritensts, Smith, but 
with larger penultimate whorl, less numerous and much less 
distinct oblique coste ; and it is further distinguished by the 
transverse fold. 
Diplommatina Sykesi, sp. n. 
Shell dextral, subfusiform, imperforate, semitransparent ; 
whorls 8, distinctly convex, first 3 with faint oblique strize, 
lower whorls smooth, antepenultimate and last whorl about 
the same diameter, the penultimate being slightly broader ; 
aperture subcircular, columella plait very prominent; _peri- 
stome expanded, a slight ridge on the inner margin giving a 
duplex appearance ; columella lip vertical, with angle at base 
directed towards the left hand. 
Alt. 3 millim.; diam. maj. 14 millim. 
Hab. Gomanton, N. Borneo. 
I know of no species with which to compare this distinct 
new form. 
Named in honour of E. R. Sykes, Esq., B.A., who has 
