70 THE ESSEX NATURALIST
The Convolvulus Hawkmoth (Herse convolvuli L.) first occurred on August
11th; a further 14 appeared between August 31st and September 25th. Of the
total seven were males and eight females. It was another poor season for the
Humming-bird Hawkmoth (Macroglossum stellatarum L.), single specimens
being seen on July 4th and 6th and August 9th. The Bush Pearl (Nomophila
noctuella Schiff.) was first taken on July 2nd and lasted until October 1st. The
total was 114.
Three unusual species taken during the year were the Scarce Black-arches
(Celama aerugula Hb.) on July 28th, Stout Dart (Spaelotis ravida Schiff.) on
July 17th, and Pale-lemon Sallow (Cirrhia ocellaris Borkh.) on October 10th.
C. aerugula may not have been recorded before from Essex.
Quite a number of the rarer immigrants were recorded during the year. A
female Bedstraw Hawk (Celerio galii Bott.) turned up on July 21st. Fifteen
White-point moths (Leucania albipuncta Fabr.) were noted, two in June, the
rest in the autumn. Two Small Mottled Willow (Laphygma exigua Hb.) were
seen, one on August 11th, the other on September 26th.
It was a good year for the migrant Pyralidae. Of the Scarce Olive-tree Pearl
(Margaronia unionalis Hb.) fifteen occurred between September 3rd and 27th.
Of the Busty-dot Pearl (Hapalia ferrugalis Hb.) there were 57 between Sep-
tember 3rd and November 14th, all but eleven occurring in September. The
most interesting captures, however, were males of the Yellow-underwinged
Pearl (Uresiphita polygonalis Schiff.) and Rambur's China-mark (Diasemia
ramburialis Dup.) on September 11th, and a second ramburialis on October 9th.
Both may be new records for the County.