MINERS 61 



then mines out a very fine gallery, leading away 



from the blotch, and about one-sixth of an inch 



long. At the end of the gallery it changes [its 



skin] a second time, after which it mines out another 



circular blotch about one-quarter of an inch in 



diameter, which has a black appearance. When 



this is complete it makes a pale ring round the 



blotch ; in this it changes once more, and then 



commences the last part of the mine. The last 



portion forms a large irregular blotch, which 



occupies most of one half of a laburnum leaflet, and 



is marked with many curved dark lines. . . . When 



fully grown it comes out of the mine to spin its 



cocoon. . . . Having found the right situation, it 



builds a wall of silken strands on each side of itself, 



and then between the two walls it spins a shuttle- 



ihaped cocoon in which it turns to a pupa. When 



mature there emerges a beautiful white moth with 



black and yellow rays at the tip of the wings. An 



almost similar moth feeds on the common broom, 



the leaves of which are very small and not very 



numerous. But this species, Cemiostoma sparti- 



foliella, does not trouble about the leaves, but lives 



beneath the bark of the twigs, where it makes 



long serpentine galleries in which it lives throughout 



the winter. When the warm days of May come it 



leaves its winter retreat and spins its white cocoon 



on broom stems. In a warm evening in July the 



moths may be seen flying in swarms around the 



bushes " (Sich). 



Other genera besides the genus Nepticula share 



