02 
tFig. 3. Physa Lordi, Baird:—Two ot the largest specimens found in Meech’s: 
Lake, showing the greatest variations. 
tig. 4. Limnea gracilis, Say :—From a dead but very perfect specimen. 
+Fig. 5, Physa Billingsii, Heron:—From the largest specimen found, the 
usual size being much less. This shell was formerly (with doubt) considered by 
Mr. Heron to be identical with Physa brevispira, of Dr. Lea,—for the description. 
ot which see Philadelphia Academy of Science, 1864, page 116—but, having 
collected many more of the shells during the publication of these Transactions, 
he feels sure that it is a new species, and has given it the above name. Descrip- 
tion: shell, ovate, semi-translucid, thick and strong ; smooth when not covered 
with a very slight drab incrustation of dirt; colour, pale greenish drab; whorls, 
rather more than four, the last very large ; suture, distinct, but not very much 
impressed ; spire, prominent, acuminated ; aperture, one-half the size of shell; 
lips, sharp, strongly thickened within with white enamel, which is a continuation 
of the columellar fold ; in many shells there are three or four of these lip thick- 
enings, marking former stages of growth ; these thickenings are apt to become 
yellow with age. Animal, tentacular, with a distinct heavy black line running 
full length, except at the base, where there is a transparent zone, often broken or 
disturbed ; body covered with minute black spots, which are assembled into what 
are apparently two lines, diverging from tip of tail, which is sharp. Shell, with 
animal alive, dark olive ; divergence, generally 62 degrees, but, in a few shells, it 
reaches even 89 degrees ; dimensions, one shell (62 degrees), length, half an inch, 
width, five-sixteenths of an inch; another (89 degrees), length, seven-sixteenths 
of an inch, width, a little over a quarter of an inch; habitat, Billings’ Bridge, 
near Ottawa, Canada. 
t¥ig. 6. Helix nitida, Muller (enlarged). 
+Fig. 7. Helix minutissima, Lea (enlarged). 
tFig. 8. Helix miliwm, Morse (enlarged). 
These two beautiful plates have been kindly executed for these Transactions 
by Mr. A. Grignard, who has joined the Club during the present year. 
+The above six species of shells are recorded from Canada for the first time. 
CONTENTS. 
List of Officers, 1879-80; List of Members, 1879-80 ; Rules; Annual Report, 
R. B. Whyte ; Inaugural Address, J. Fletcher; Graphite of the Ottawa Valley, 
W. H. Harrington ; Cystidian Life, Dr. J. A. Grant ; Asbestos, W. P. Anderson ; 
Land and Fresh-water Shells of the Ottawa Valley, Gilbert C. Heron; On some 
Insects captured at our Excursions, W. H. Harrington; Flora Ottawaensis, J. 
Fletcher; Description of Plates. 
PRICE 
Witla @ich vB aeracccr ce ac sys opeyetets eoces. 20 Cents;. 6 Copies, Sb. 
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