THE JOURNAL OF MICROSCOPY 



AND 



NATURAL SCIENCE : 



the journal of 

 The Postal Microscopical Society. 



APRIL, 1885. 



Cbironomu0 praeinu^* 



By a. Hammond, F.L.S. 

 Plates 9 and 10. 





p-O 



iCVJ 



Part I. 



HE subject of this paper has been kindly identified 

 for me under the above title, by Mr. Kirby of the 

 British Museum. In all its stages the Chironomus 

 prasiiius much resembles another very common 

 denizen of our ponds, water-butts, etc. — ChiroJiomus 

 plumosus^ the larva of which is called the blood- 

 worm, but appears to be a distinct species. It 

 eventually becomes a minute Tipulid fly, which is 

 not unfrequently mistaken for a gnat ; a deception 

 which the small size of the insect and the plumose character of 

 the antennae favour, but a glance at the head of the insect as seen in 

 Fig. 28, PI. 10, will at once show, that the formidable rostrum 

 and lancets of the gnat are replaced by a pair of fleshy lips, flanked 

 by a pair of five-jointed palpi, forming a very harmless piece of 

 apparatus. 



VOL. IV. F 



