68 One Thousand Objects 



493. PLUMULES OF COMMON BLUE (Polyommatus 

 Alexis). Known as ' Battledore scales,' from their shape, 

 which is elliptical, produced below into a shaft or handle. 

 (PI. VII., fig. n.) 



494. PLUMULES OF AZURE BLUE (Polyommatus argiolus). 

 The sides are nearly parallel, and the ends straight; so 

 that, with the markings, they appear to resemble minia- 

 ture 'gridirons,' rather that battledores. 



495. PLUMULES OF LARGE HEATH (Hipparchia titho- 

 nus). Very long and narrow, tapering upwards, and 

 terminated by a small tuft or tassel. 



496. PLUMULES OF WALL (Hipparchia megcera). Very 

 similar to the last, but with the lower extremity a little 

 lobed by the depression of the shaft. (PL VII., fig. 12.) 



497. PLUMULES OF GRAYLING (Hipparchia semcle). 

 Much shorter in proportion than either of the two last 

 named, rounded at the base, and the sides almost parallel. 



498. FRINGE SCALE OF CLEARWING (TrochUium tipuli- 

 forme). The marginal hair-like scales have a long shaft, 

 expanded into a triangular five-pronged head. (PL VII., 



fig- 4-) 



499. SCALE OF CLEARWING (TrochUium tipuliforme). 

 The scales on the nervures of the wings have nearly 

 parallel sides, rounded base, and irregularly notched apex. 

 (PL VII., fig. 5.) 



500. TRANSPARENT SCALE (TrochUium tipuliforme). 

 The small rounded scales scattered ever the clear mem- 

 brane of the wing are very delicate and transparent; 

 slightly iridescent. (PI. VII., fig. 6.) 



501. LONG SCALE OF CABBAGE (Pieris Rapce). A 

 common form of scale on the small white Cabbage Butter- 

 fly, is lobed at the base, and expanded upwards, with a 

 rounded apex. (PL VIL, fig. 14.) 



502. FAN SCALE OF SILVER LINES (Pyralis prasiniana}. 

 This pretty little green moth has fan-shaped scales, 

 mixed with other forms, with an expanding deeply 

 toothed apex. (PL VII. fig. 17.) 



503. SCALE OF SILVER LINES (Pyralis prasiniana}. 

 /.nother form of scale common on this moth is acutely 



