154 NOTODONTA ZICZAC. 



darker ; the latter half of 10, including half of proleg, 

 and the whole of 11 and 12 rich orange, with white 

 lines at the top of the pyramid on 12 ; 13 pink and grey ; 

 on 5 — 10 pale yellowish lateral slanting streaks ; the 

 spiracular region grey ; spiracles pale with dark rings ; 

 below them the colour is dusky pink, the belly more 

 dusky. 



Another variety was altogether paler, with little or 

 no pink tinge, the sides whitish tinged with a little 

 pale yellow, the humps white and grey, segments 11 

 and 12 with a very few orange freckles. 



I have no cocoon measurements : I believe the 

 structure of the cocoon is not so strong as that of some 

 other " Prominents." The pupa I measured is barely 

 20 mm. long, cylindrical, of nearly even bulk, the 

 abdomen tapering but slightly, the tail rounded, with 

 no spike, but some roughness at the end, and two tiny 

 divergent points ; the skin dull on the wing-cases, 

 glossy on the abdomen, very glossy on the last seg- 

 ment; colour dark red-brown. (J. H., 21, 12, 86.) 



Pterostoma palpina. 

 Plate XXXIV, fig. 1. 



Mr. Buckler figured this larva July 9th, 1861, and 

 described its appearance as " rather granulous;" and 

 again July 11th, 1868, on poplar. When I began 

 collecting I had moths brought to me from the street 

 lamps at various dates, May 27th being the earliest, 

 August 18th the latest, intermediate dates June 4th 

 and 6th, July 1st, 26th, 29th, August 2nd, 13th, and 

 17th. In 1861 I had eggs June 3rd, the larvae hatched 

 June 13th, had all spun up July 15th, and I bred a 

 moth April 14th, 1862. I have taken the larva from 

 aspen June 30th, from sallow July 14th, September 

 16th. 



Mr. W. H. Harwood tells me he has frequently bred 

 two broods in the year, but the second flight is always 



