20 GENERAL ORISMOLOGY. 



26. 



If the clothing be placed isolated, leaving free spaces between 

 it, or if present upon only certain parts of the body, the following 

 terms are used to distinguish these differences : 



FASCICULATE (fasciculatum), is a surface covered with dispersed 

 bundles of long hair ; a solitary one is called a FASCICULE (fasciculus} ; 

 CIRRUS (cirrus)^ is a curled lock of hair placed upon a thin stalk ; 

 BRUSH (scopa), when the hair is short, stiff, and of equal length ; 

 SCOPATE (scopaceum), is a surface entirely covered with such a brush. 



COMATE (comatum), when the upper part of the head or vertex alone 

 is covered with long hairs. 



BARBATE (barbatuni*), when a part, chiefly an opening, as the mouth, 

 &c., is surrounded by long hairs. 



PENCILLATE (pencillatum) , when long flexible hair is placed upon 

 a thin stalk. 



FIMBRIATE (Jlmbriatum), when a part is fringed with hair of 

 irregular length. 



JUBATE (jubattnri), when fringed with long pendent hair (interme-> 

 diate legs of the male of Anthophora retusa). 



IV. COLOUR. 



27. 



Colour succeeds to form, and the various qualities of surface, as the 

 next most important character for distinguishing insects. Even in 

 groups where colour cannot be used as a specific character, from its 

 great and frequent variation in the same species (as Coccinella varia- 

 bilis, Illig.), it then becomes important to notice precisely its differences 

 for the requisite separation of the varieties of the species. In order to 

 explain distinctly these differences of colour, terms expressive of the mul- 

 titudinous gradations of tint produced by the various admixture of the 

 several primary colours are necessary. But as we have not yet arrived at 

 a general unanimity, which may be readily perceived by the comparison 

 of the descriptions of the same insect by different authors, it is vain to 

 hope that we shall here solve the problem of reducing the system to 

 universal harmony. Clearly perceiving these difficulties, Lamarck, and 

 after him Latreille*, proposed a peculiar method for the definition of 

 colour, whereby he thought he had removed every possible doubt. 



* P. A. Latreille, Ilistoire Naturelle des Crust, et des Insectes. Paris, an. XII. Vol. i. 

 p. 331, &c. 



