278 PTILOTA : IMAGO — EXTERNAL ANATOMY. 



Spots {Macules), which are patches of one colour appear- 

 ing on the differently coloured wngs (134, a a). 



Dots {Atomi), which are very minute points of a different 

 colour ; when scattered over the entire sm^face of the 

 wings they are said to be irrorate {h). 



Puncta, gutta, pustula, and plaga, are words used for spots 

 of various sizes. 



Lines {Linece), narrow, generally straight marks of differ- 

 ent colour (c). 



Streaks {Strigce), somewhat broader lines, generally trans- 

 verse {d). 



Bands {Fascia), broad transverse marks (e). 



Vitta is a longitudinal fascia. 



The four last terms are said to be undulated when alter- 

 nately curved hke waves (/), and dentated when 

 toothed {g). 



Annulets {Annuli), ring-like marks {h). 



13L 



Imag;inary wing of a Butterfly. 



Eyelets {Ocelli), circular spots upon a differently coloured 

 wing, with the centre also differently coloured [i) ; the 

 latter is termed the pupil {pupilla), and is sm-roimded 

 by the iris. 



Luuulets {Lunulce), crescent-shaped marks {k). 



