278 PTILOTA : IMAGO EXTERNAL ANATOMY. 



Spots (Maculae), which are patches of one colour appear- 

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



Dots (Atomi), which are very minute poiuts of a different 

 colour ; when scattered over the entire surface of the 

 wings they are said to be irrorate (b). 



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

 of various sizes. 



Lines (Lineee), narrow, generally straight marks of differ- 

 ent colour (c). 



Streaks (Striyee), 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 like waves (/), and dentated when 

 toothed (g). 



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



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 surrounded 

 by the iris. 



Lunulets (Lunula), crescent-shaped marks (*). 



