are marked A. B. C. in the plate. There are about eight or 

 nine species in Britain ; amongst which are T. bimaculata L. 

 belonging to the first division ; T. atrata L. belonging to the 

 second ; and T. pectinicornis L. the t\^e of the third. 



The larvee are said to inhabit decayed trees, and the perfect 

 insects are generally found amongst undenvocd and bushes. 

 The specimen figured in the plate is a male, and was taken upon 

 an oak, by J. C. Dale, Esq. in company widi the Rev. W. Kirby, 

 near Lyndhurst in the New Forest, July 7, 1821. It is the 

 only one known to have been found in this country : and it 

 appears to be equally rare upon the Continent; for Meigen 

 has been obliged to depend upon his friend Wiedemann for 

 a description of it. The female of this beautiful species is at 

 present unknown. 



]\Ir. Ha worth also possesses a very rare species of this genus, 

 which there is very little doubt is the T.Jlaveolata Fab., taken 

 many years since by Mr. Rippon in Yorkshire. 



It is worthy of remark, that the palpi of this genus, and pro- 

 bably of many others of the family, are very different in struc- 

 ture to any that I have before observed : the greater part of 

 the last joint being composed of rings, which render it per- 

 fectly flexible, and enable the insect, I imagine, to use it with 

 nearly the same facility as an elephant can his trunk. 



The plant introduced in the plate is Poli/goimm aviculare 

 (Common Knotgrass). 



