68 LAND AND FRESHWATER 
before doing so. Helix conulus, Blf., stands alone, a very peculiar 
form, which cannot be put in any of the genera I am now figuring. 
Blanford placed it in Kaliella with doubt, and I follow him. 
The examination of the odontophore of a species on Plate XV. 
shows close relationship with Aaliella; and the dissection of a species 
(figs. 1 & 2 on Plate XVII.) from Cherra Poongee settles definitely the 
position of most of the shells on that Plate in the genus Macrochlamys, 
and thus leads up through these small forms to the illustration 
of it in detail on Plates XVIII., XIX., and XX. On Plate XXI. 
I give drawings of the sculpture of several species of Zonitide, 
which I found useful when roughly grouping them together. 
The description and synonymy of Macrochlamys indica will be given 
in Part IV., together with tugurium, petrosa, resplendens, decussata, 
and other large species of the genus, which perhaps contains more 
species than any other in the Indian Region, and those species ex- 
ceedingly variable in form. 
With reference to the discovery of Kalella in Madagascar, 
Mr. Edgar Smith writes as foliows, in the P. Z.S. for 1882, p. 375: 
—* One minute species, H. barrakporensis, has not previously been 
met with except in India, where it may have been introduced, as is 
the case with the large Achatina fulica, a most abundant shell in 
some parts of Madagascar and also at the Mauritius.” The intro- 
duction of this last by Mr. Benson into Calcutta is well known; and 
since then it has spread all over Calcutta and its suburbs up to 
Barrakpur, where I have seen it, and across the Hooghly into the 
Botanical Gardens, the eggs, no doubt, transported in the roots of 
garden plants. It has thus become a perfect pest—a somewhat 
similar and questionable benefit to the country as the introduction 
of the rabbit and sparrow has been to Australia. Now Kaliella 
barrakporensis is not a parallel case, but one that must remain an 
example of great extension of a species. It is a most abundant shell 
over a vast area of country from the Sundabunds to the Himalayas, 
there being few small shells so abundant. 
Family ZONITIDAE (continued). 
Subgenus Karteria (continued from page 24). 
KALIELLA LAILANGKOTENSIS, n. sp. (Plate XV. figs. 1, 1 a.) 
Locality. Lailangkote, Khasi Hills (H, H. G-A.). 
Shell depressedly conoid, subangular on periphery, closely umbi- 
licated ; sculpture, covered with a strong epidermis, well ribbed 
transversely, crossed by regular longitudinal fine ribs; colour pale 
ochre; spire low, blunt; suture impressed; whorls 5, somewhat 
flattened; aperture subvertical; peristome sinuate below, thin, 
columellar margin oblique. 
Size: major diam. 4-8 mm., alt. axis 2°3 mm. 
3 0-19 inch, ,, 0:09 inch. 
