9 
Nearly allied to H. tapeina, Bens., from which it may be at once 
distinguished by the fold on the columella. 
BuLimvus PERVERSUS, L. 
I have seen two imperfect specimens only, collected by Mr. Mou- 
hot ; they may be recognized by the convexity of the upper whorls 
and the white sutural zone as belonging to B. perversus, and not to 
B. interruptus. 
Buuimus staAMEnsis, Redfield, Ann. Lyc. N. H. New York,1853, 
vi. p. 15; Pfr. Mon. iv. p. 425. 
Leg. Ingalls et Mouhot. 
Our specimens would scarcely be called ‘‘ obtuse carinati,’’ havin 
in fact no keel at all. The largest of the specimens which I have 
seen is 22 mill. long and 11 broad, the length of the aperture being 
8 mill. 
B. siamensis belongs to the group Ena, Leach (= Merdigero, Held 
= Napeus, Alb.), spread from the middle of Europe to the northern 
and mountainous parts of India, and seems to be one of its most 
eastern representatives ; it is particularly allied to the Transylvanian 
B. reversalis, Bietz., by its sinistral whorls. 
Srenocyra ERECTA (Bens.); Pfr. Mon. ii. p. 265? 
Iam not able to find any reliable difference between one shell col- 
lected by Mr.. Bowring and the above-quoted description ; as the 
measurements, however, and the number of whorls do not agree, [ 
subjoin the following diagnose : — 
Testa cylindraceo-turrita, apice obtusa, striatula, nitida, pallide 
lutescens ; sutura mediocris ; anfractus 54 convewiusculi ; 
apertura x longitudinis teste equans, tetragono-elliptica ; peri- 
stoma simplex, acutum; columella antrorsum torta, oblique 
truncata. 
Long. 243, diam. 9 mill. ; apert. 8 mill. longa, 5 lata. 
STENOGYRA TURRICULA, 0. 
Testa turrita, imperforata, subtiliter verticaliter striata, parum 
nitens, sordide flavescens ; apex obtusiusculus ; anfr. 9, regu- 
lariter accrescentes convext, sutura profunde discreti, ultimus 
angustatus ; apertura ovato-lanceolata, superne acuta, inferne 
rotundata ; peristoma simplex, margo externus strictus, rectus, 
columellaris adnatus ; columella stricta, elongata, alba, ad 
basin valde oblique truncata. 
Long. 18, diam. 6; long. apert. 5 mill. 
SuCCINEA, sp. 
Leg. Mouhot. 
The specimens are too badly preserved to be identified with any 
known species, or described as a new one. 
