194 coccus. 



scarlet in grain ; the animal having been popularly 

 considered as a grain: the colour is a durable, 

 deep red, .called ox-blood colour, much inferior to 

 the brilliancy of Cochineel scarlet, but far more 

 lasting, and less liable to stain. Mons r . Hellot, in 

 his Art de tiendre, observes that the figured cloths 

 to be seen in the old tapestries of Brussels and 

 the other manufactures of Flanders, which have 

 scarcely lost any thing of their liveliness by stand- 

 ing for two hundred years, were all dyed with this 

 ingredient. 



Coccus Polonicus. This may be considered as 

 the Cochineel of the North ; being found only in 

 cold climates. It is sometimes collected for the 

 use of dyers, but is greatly inferior as a colour 

 to the American Cochineel. It is chiefly found 

 on the roots of the plant called Scleranthus per- 

 ennis, and is principally produced in Poland. 



Coccus cataphractus. This very singular species 

 was described several years ago in the fifth volume 

 of the Naturalist's Miscellany, from a specimen 

 communicated by the ingenious Mr. Dickson, 

 Gardener to the British Museum, and well known 

 for his assiduous researches into that difficult 

 branch of Botany the class Cryptogamia. Mr. 

 Dickson, soon after its discovery, requested me to 

 examine its characters, and endeavour to ascertain 

 its genus. I accordingly made a microscopic sur- 

 vey of the animal, and could not but conclude it 

 to be a species of Coccus. 



The natural size of the insect, (of which the 



