ANGLE-STRIPED SALLOW. 5 



Teich. Ab. ochrea, Tutt, is of a reddish-tinged ochreous colour 

 with clearly defined cross lines ; and ab. J'ufa., Tutt, is red with 

 distinct cross lines. Perhaps the rarest form of all is ab. nigra, 

 Tutt, which in ground colour is deep blackish grey, with the 

 cross lines faint. 



The caterpillar is green with black, glossy, raised dots, each 

 encircled with white ; there are three whitish lines along the 

 back, the central one rather wider than the other two ; a pale 

 yellowish line along the area of the black spiracles ; head, green, 

 tinged with dark brown or black about the jaws. It feeds, from 

 April to June, on the foliage of elm, oak, sallow, and other trees 

 and shrubs ; also, be it noted, on other caterpillars. The 

 larvae hunter should therefore get to know this cannibal on 

 sight, so that he may exclude it from the common receptacle. 



The moth, which frequents woods and woody country 

 generally, is out in July and August. 



The species appears to be common throughout England and 

 Wales, the south of Scotland, and more or less frequent north- 

 wards up to Moray. It is widely spread in Ireland. 



Angle-striped Sallow {Costnla paleacea). 



From the typical pale yellowish ochre, the fore wings range in 

 tint to a deeper buff, inclining to orange. The transverse lines 

 are brown, or sometimes reddish, but are not always distinct, 

 especially in the male. The stigmata are not infrequently 

 obscure, but the blackish spot of the reniform is generally 

 present. In some examples, chiefly of the female sex, there is 

 an angulated dark shade crossing the central area, and some 

 dark clouds or dashes on the outer area. (Plate 4, Fig. i $.) 



The caterpillar is pale dingy green, dusted with whitish, and 

 yellow between the rings ; three white lines along the back, and 

 a double white line along the region of the purplish-edged white 

 spiracles ; head, pale yellow, the jaws black, and a small red 



