APORIA CRATÆGI.
This specimen is the rare English Black-veined White butterfly. It has undoubtedly been netted in Teneriffe, though it has not been personally observed by the author. In flight its similarity to other white specimens is so great that it may often be passed unnoticed. It is said to be local and uncertain in appearance, being seen chiefly during the summer months about the fields and gardens. The wings are entirely of a white cream colour, and are alike on both sides, the veins being black, and the fore-wings having some dusky spots on them. The caterpillar is black, thickly sprinkled with whitish hairs, and with a reddish yellow stripe running along each side. It feeds on various fruit trees, and is believed to be very destructive.