GUDE: ADDITIONS TO THE GENUS STREPTAXIS. 323 
very strong at the sutures, giving the latter a crenulated appearance, 
especially at the last whorl. Spire elevated, suture impressed, apex 
obtuse. Whorls 7, the earlier ones convex, the last two somewhat 
compressed laterally, the last not descending in front, slightly con- 
strieted behind the peristome, keeled round the umbilicus. Aperture 
oblique, subelliptic. Peristome strongly thickened and reflexed ; 
margins subparallel, the outer receding a little above, bearing on 
the inner side a strong tubercle; basal margin curved, columellar 
margin straight, a little dilated above, overhanging the umbilicus. 
The parietal wall bears a compressed entering fold close to the 
upper margin of the peristome, and is connected with it by a slightly 
raised ridge. Alt. 10°75, diam. 8°5 mm. 
Hab.—Lampun, Siam. Two specimens. 
Type in my collection. 
Compared with its nearest ally, S. porrectus, Pfr., the new species 
is larger and more solid, the costule at the suture are much more 
conspicuous, the umbilicus is wider and deeper, the aperture more 
elongated, and the peristome thicker. The right margin of the 
peristome, moreover, bears a strong tubercle, and the parietal fold 
is more prominent and elevated. The shells were received from 
Mr. Preston. 
5. Srrepraxis oprusus, Stoliczka. Pl. XII, Figs. 8-10. 
The specimen now figured was received from Colonel Beddome with 
the manuscript name S. guétulinus, and at first | was inclined to regard 
it as a new species. Mr. Blanford, however, obligingly allowed me 
to inspect specimens of S. odfusus, received from Stoliczka himself, 
and comparison with these proved beyond doubt that the shell per- 
tained to Stoliczka’s species. 
Hab.—Moulmain, Burma. 
6. Srrepraxis bation, n.sp. Pl. XII, Figs. 1-4. 
Shell umbilicate, depressed-conoid, whitish corneous, finely costulate 
above, smooth and shining below. Spire depressed, suture channelled, 
apex obtuse. Whorls 6, the earlier ones flattened, the penultimate 
angular, projecting above the last, which is inflated below, not 
descending in front, angular round the umbilicus. Aperture oblique, 
subrhomboid. Peristome thickened and shortly reflected; margins 
distant. Parietal wall with an entering elevated fold about the 
middle, and a second short oblique fold a little above it. Outer 
margin receding a little above, inflected about the middle. The 
inside of the peristome bears three equal equidistant tubercles, one 
each on the outer, basal, and columellar margins; behind the peristome 
occurs a shallow scrobiculation corresponding with the basal tubercle. 
Umbilicus moderately deep, narrow at first, suddenly widening, 
strongly costulate within. Alt. 6 mm.; diam. maj. 8, min. 6°25 mm, 
Hab.—-Nilgiris, India. 
Type in my collection. 
Colonel Beddome kindly furnished a specimen from a suite of several 
in his collection, which were labelled S. Perotet’. The present shell 
differs from that species in the much wider umbilicus and the wider 
