174 PHYSIOLOGY OP INSECTS. 



rather a diversity of meaning, from authors being unac- 

 quainted with the uses of the words in Latin ; the colour 

 to which they should properly be confined is that of brick- 

 dust : ferruginous or ferrugineus is rust-coloured, or brown 

 with a good deal of red in it. 



Reds : rufous or rufus, the colour of copper : sangui- 

 neous or sanguineus is the colour of blood : rubrous or 

 ruber is a clear unmixed red : miniatous or miniatus, the 

 colour of red lead : coccineous or coccineus is the most 

 brilliant red, the colour of the blossom of the horse-shoe 

 geranium: roseous or roseus is the colour of the rose: 

 puniceous or puniceus is a red inclining to orange. 



Yellows : golden yellow, orange or aureus, the colour 

 of an orange : croceous or croceus, the colour of the blos- 

 som of a crocus, rather brighter than orange : flavous or 

 jlavus, a pure unmixed yellow, the colour of the blossom 

 of the sun-flower : stramineous or straminem, paler than 

 the last, the colour of straw, but rather brighter and purer : 

 sulphureous or sulphureus, a pale delicate yellow, the 

 colour of powdered brimstone : luteous or luteus, the 

 colour of the yolk of an egg : lutose or lutosus, the colour 

 of yellow clay: tawny or fulvus, the colour of the lion. 



Greens: glaucous or glaucus is that pale grey green 

 which is the usual colour of the sea : prasinous or pr a si- 

 nus is the colour of the leaves of leeks : olive or olivarius 

 is the colour of olives, a dull green or green with brown 

 in it. 



Blues : caeruleous or caruleus is the colour of the sky : 

 cyaneous or cyaneus, a pure bright blue, the colour of the 

 blossom of Centaurea Cyanus ; this colour has been erro- 

 neously described as that of indigo : caesious or c&sius is 

 an impure greyish blue : violaceous or violaceus has a 

 mixture of red in it, and is precisely the colour of the 

 purple violet : frosted or pruinosm expresses that appear- 



