146 LAND AND FRESHWATER 
Katietza (continued from p. 73). 
I also figure a portion of the radula of Kaliella kezamaensis 
(Plate XL. fig. 10), which I described in Part III. p. 69, also a 
portion of the spermatophore (fig. 11). Among a large collection 
of shells from Darjiling in spirit I have been enabled to see the 
generative organs of Kaliella barrakporensis (Plate XXXVIII. 
fig. 5). There is no amatorial organ. The male organ is long and 
cylindrical, with a small pear-shaped kale-sac situated at the junction 
of the vas deferens, the retractor muscle being given off some short 
distance below. The spermatheca was broken off, 
Note. As the measurements given in this work differ somewhat 
from those adopted by some conchologists, on Plate XX XVIII. fig. 6 
will be found a figure showing what I term the height of the axis, 
viz. the distance from the umbilical region at the base of the last 
whorl to the apex of the shell (A B). The height of the body-whorl 
is taken from the same point up to the plane of the suture of the 
last whorl in front, or BC. The height of the aperture is the per- 
pendicular dropped from the upper angle of the aperture to the 
peristome below, or ab; the breadth of the aperture from the colu- 
mellar margin to the outside edge of the peristome, ¢ d. 
Subfam. Heticarionin®. 
Genus Hericarton. (Plate XLI.) 
Founded by Férussae on the Australian species H. cuviert, Fér., or 
freycineti, Fér, I have therefore gone beyond the limits of my 
work, and give a Plate to illustrate this genus, which is so intimately 
connected with so many of our Indian forms. It will show more 
clearly what the extent of the differences are. I am sorry I could 
not obtain a larger species for this purpose, and I shall not at pre- 
sent give any general description of the genus. 
In the generative organs there is the greatest departure, the 
shell-lobes being more like those of Durgella. These particular 
Australian, Indian, and African land mollusca thus form a good 
subfamily, under the title of Hericarronin®. 
HELICARION HELEN#, n. sp. (Plate XLI. figs. 1-8 a.) 
Locality. Sydney, N.S. Wales (Dr. J. C. Cox). 
Shell elongately oval, polished, quite smooth; colour pale yel- 
lowish green ; spire flat: whorls 23, the first small, rapidly increas- 
ing, the last much expanded and elongated in front; peristome thin, 
arcuate above. 
Size: major diam. 7°3, minor diam. 4-5 mm. 
0°29, a 0°18 inch. 
Animal (figs. 1, 1a). Beautifully executed water-colour drawings 
from life by Mrs. H. Forde, dated the 3rd June, 1870, were sent 
