30. ZOOLOGY. 
restrial, and two others which are aquatic. The largest of the 
latter, Menobranchus Lateralis, known as mud pointer, mud pup- 
py, &c., although common to all the great lakes of North 
America, is very rarely met with in this immediate neighborhood. 
I once saw one lying on the lake shore, near Darlington Harbor, 
in a partial state of decomposition, and another, captured in To- 
ronto Bay, which was preserved, and is now in the Museum of 
Toronto University. These lizards abound in great numbers on 
a shoal in Lake Superior, which surrounds Standard Rock, situate , 
forty miles in a south-east direction from the harbor of Marquette. 
' "This rock, which is not discernable in rough weather, can readily 
be seen when the lake is calm ; at which time, its summit remains 
a few feet above the surface. This shoal varies in depth, from 
three to five feet, and during the spawning season it is frequented 
by salmon trout, for the purpose of depositing their eggs. 
At this season, the bottom of the shoal is literally swarming 
with these lizards, and the stomachs of those that were taken were 
gorged with trout spawn. Some of the largest were about a foot’ 
in length, and of a dark brown color above, mottled with dark 
spots ; lightish grey underneath, with a lateral line running along 
the side, from the head to the tail. This lizard has the gills on 
the outside, which are erected like two tufts on each side of the 
head. 
These animals are held in much dread by the French fisher- 
men, who believe them poisonous, even to the touch, and when 
one gets fouled in their nets, instead of shaking it loose, or taking 
it in the hand, as they would a fish or a frog, they invariably cut 
away the meshes of the net, leaving a large hole to be repaired. 
Although these fishermen have been acquainted with this lizard 
for successive generations, and never knew a single instance of 
any harm resulting from them, this silly superstition still exists 
amongst them. 
CRUSTACEA. 
The Craw Fish, small fresh water lobsters, is one of the crusta- 
ceous animals, found in our vicinity, and is common in streams 
throughout the whole of America. When schoolboys, we used to 
amuse ourselves by putting two of them together, and watch their 
