THE BRIMSTONE- MOTH. 249 



tinged with red ; the back with two horn-like pro- 

 tuberances. Its favourite food is the hawthorn, but 

 it likewise frequents the sloe, apple-tree, bramble, 

 &c. The moth is one of our more common species, 

 and is distributed over the whole island. It is 

 found from ^pril to October or November, there 

 being several broods in the year. 



SWALLOW-TAIL MOTH. 



Ourapteryx Sambucaria. 

 PLATE XXVII. Fig. 2. 



Phal. Geom. Sambucaria, Linn.; Don. v. PL 170 Swallow- 

 tail Moth, Wilkes, PI. 7 8 ; Harris. Ourapteryx Sambucaria, 

 Leach, Zool. Mag. i. PI. 35, fig. 2. 



THE most characteristic feature in the present genus 

 is that to which both the generic and English names 

 refer, namely, the prolongation of the hinder wings 

 into a pretty lengthened acute tail. The anterior 

 wings are likewise very acute at the tip, and some- 

 what falcate, the margin entire. The antenna are 

 of moderate length and simple in both sexes ; the 

 palpi short, the proboscis nearly as long as the 

 antennae. The caterpillar has six pectoral legs, and 

 four prolegs at the hinder extremity. The Swallow- 

 tail is one of the largest of our native geometrine 

 moths ? the extent of the wings frequently measuring 



