GAMMARUS TENUIMANUS. 
385 
instances of such want of development or reproduction, 
we may mention that we possess a specimen of G. marinus 
in which one of the superior antennae is only half the 
length of the other ; and a specimen of G. locusta, in 
which one pair of the branches of the sixth segment of 
the tail is only half the size of the opposite pair on the 
same joint. 
We found this species amongst many specimens that 
were sent to us by the Rev. Geo. Gordon, from the 
mouth of the rivers Ness and Brauley, N.B. We 
assume that the water must be brackish, inasmuch 
as they were forwarded for the purpose of defining 
the limits of the estuary by an examination whether 
the Crustacea found therein belonged to fresh or salt 
water. 
The following pretty sketch of Burghead, on the Moray 
Frith, was kindly drawn for us by Mr. Small. 
BURGHEAD. 
c c 
