39 
few miles to the south of this city eight years ago. It is found in the Eastern 
States, and along the St. Lawrence River, and is supposed to have been imported 
from Europe. They retain the habits of the European species, climbing hedges, 
trees and stems of plants, not remaining concealed under decaying leaves, logs, 
ete,, like other American Helices. 
To many the study of conchology is but a trifling affair—something to pass 
the time away—which may be very true, so far as the mere collector of shells is 
concerned—but to the student of nature it is a very different thing. Sowerby 
says, in his manual, page 157 :—* Indeed all who would study geology with 
success, will find it very essential to obtain a thorough knowledge of con- 
chology. 
Among the reasons for the study of conchology, the following might be 
mentioned :—The great assistance it affords the students of geology ; second, the 
determination with all speed of the limits of species before they are influenced 
by civilization ; and last, though not least, is the vast amount of amusement 
and instruction to be obtained therefrom, or, in other words, the pleasure of 
having a hobby. 
I hope the coming season will not pass without our Club being able to add 
three or four workers in this very interesting, but much neglected field of natural 
science. 
List OF SHELLS FoUND aBouT OrTawa Ciry, 1879. 
GASTEROPODA. Limnzide.—Continued. 
PECTINIBRANCHIATA. Limne gracilis, Say. 
Ge decolata, Mighells. 
Viviparidee. Physa heterostropha, Say. 
Physa ancillaria, Say. 
Paludina decisa, Say. «Lordi, Baird. 
Valvata tricarinata, Say. 
« humeralis, Say. 
Amnicola porata, Say. 
6 granum, Say. 
é lapidaria? Hald. 
Melaniadze. 
Melania livescens. 
PULMONIBRANCHIATA. 
Limneide. 
Limnea stagnalis, Lin. 
“ columella, Say. 
& clodes, Say. 
x umbrosa, Say. 
“ catascopium, Say. 
“= caperata, Say. 
it humilis, Say. 
at desidiosa, Say. 
«“  previspira, Lea. 
“  hypenorum, Lin. 
[‘lanorbis trivolvis, Say. 
st lentus, Say. 
te campanulatus, Say. 
ue bicarinatus, Say. 
ae exacutus, Say. 
Ks deflectus, Say. 
ay hirsutus, Say. 
ve parvus, Say. 
$4 Billingsii? Lea. 
a macrostomus, Whiteaves. 
Planorbulina armigera, Say. 
Ancylus rivularis, Say. 
Helicide. 
Tebennophorus Carolinensis, Besc. 
Limax campestris, Gonld. 
Vitrina Limpida, Gould. 
Suecinea obliqua, Say. 
3 ovalis, Say. 
ts avara, Say. 
