BUG. 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 

 Cime.r stagnorum 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. 



Cime.r 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. 



