EUG. 167 
native of North- America and the West-Indian 
islands. 
Lastly, of those which are of an extremely long 
or linear form, none are so remarkable as the 
Cimex stagnoriim of Linnaeus, which is often seen 
slowly wandering about the surface of stagnant 
waters. It measures something more than half 
an inch in length, and is entirely of a deep black 
colour: it is distinguished by the remarkable cir- 
cumstance of a round globule, situated on each 
side the middle of the thorax. 
.Cimex lacustris is also found on the surface of 
stagnant waters, but is of a less lengthened form 
than the preceding, of a brown colour, and in its 
motions is a perfect contrast to the former ; 
springing with wonderful velocity, in all direc- 
tions, over the waters, and generally assembling 
in considerable numbers during the hotter part of 
the day. It is described by Mouffet and others 
under the title of Tipula, and is supposed to have 
been the Tipula of the ancients. 
