PHYSIOLOGY OF INSECTS. 131 



employed by entomologists. All colours seem of 

 two principal kinds, fictitious colours and real 

 colours ; the fictitious colours being black, brown, 

 white, and their compounds ; and the real colours, 

 those displayed by the prism. 



485. Blacks : piceous (piceus), the colour of 

 pitch ; atrous (ater\ the colour of liquid ink ; 

 nigrous (niger), the colour of lamp-black ; fuli- 

 ginous (fuliginosus\ the colour of soot. 



486. Browns : olivaceous (olivaceus\ the colour 

 of olives ; ferruginous (ferrugineus), the colour of 

 rust ; fuscous (fuscus), the colour of tanned leather ; 

 brunneous (brunneus\ the colour of a chestnut ; 

 cinnamoneous (cinnamomeus), the colour of cinna- 

 mon ; livid (lividus), the colour of liver. 



487. Whites : griseous (griseus), the colour of 

 grey hair ; cinereous (cinereus}, the colour of ashes ; 

 '<ilbous(albus\ the colour of chalk ; niveous (niveus), 

 the colour of snow. 



488. Reds : miniatous (miniatus), the colour of 

 red lead ; testaceous (testaceus), the colour of 

 brick-dust ; rufous (rufus\ the colour of bright 

 copper ; coccineous (coccineus), the colour of the 

 blossom of the horse-shoe geranium : sanguineous 

 (sanguineus), the colour of blood ; roseous (roseus), 

 the colour of the rose. 



489. Oranges : aurantious (aurantius), the 

 colour of an orange ; croceous (croceus), the 

 colour of the crocus : fulvous (Julvus), the colour 

 of the lion. 



K 2 



