156 



Polia Herhida and tincta. A single specimen of each taken. 



Thyatira Batis. Not so common as usual. 



Chaonia crenata. The first British specimen of this insect was ta- 

 ken in Ongar Park Wood, in June, 1839 ; and a second in the same 

 place, in June of the present year. Both specimens were females. 



Acrotiycta megacephala. Common. This insect is remarkable for 

 the length of time it occurs in the perfect state. The caterpillars 

 change to the chrysalis state in September, and the moths first appear 

 in May following, and continue to come out till the beginning of Au- 

 gust. The first specimen I saw this year was on the 3rd of May, and 

 at this time (July 10th) I have several specimens just out of the chry- 

 salis. 



Lophopteryx Camelina, Leiocampa Dict<Ba, &c. keep changing 

 fi-om the chrysalis at intervals for several weeks. 



The following insects were taken between the 3rd and 20th of June, 

 in Huntingdonshire and Northamptonshire. 



Pieris Crat<B(ji. Plentiful in Monk's Wood, Hunts., on the 3rd of 

 June. 



Thecla Pruni. Just appearing on the 18th of June, in Monk's Wood. 



Pamphila Paniscus. In profusion in Monk's Wood and in a wood 

 near Oundle, Northamptonshire. 



Polyommatus Arion. I captured a single male of this species near 

 the village of Wigsthorpe, Northamptonshire. It is a rather singular 

 variety, and not larger than P. Argus. 



Melitaa Artemis. In Monk's Wood, Holme Fen, and in profusion 

 near Aldwinkle in Northamptonshire. 



Lycecna dispar. Catei-pillars of this species very plentiful in Holme 

 Fen on the water-dock (Rumex Hydrolapathum). 



Hypogymna dispar has quite disappeared from the fens, and I was 

 informed that none have been seen since the year 1836. 



Zeiizera Arundinis. Of this insect, which is new to Britain, I found 

 a single male floating on the water in a dyke on the border of Holme 

 Fen.* 



Nemeophila Plantaginis. In profusion in Monk's Wood. 



Sfmiropus Fagi. I took a remarkably large female in very fine con- 

 dition, in a wood near Sudboro', Northamptonshire. 



Sesia fuci/ormis, (Stephens). Plentiful in the fens, and in a boggy 

 pi(;ce of ground near Aldwinkle. 



* See note by Mr. Stepluns, papfc 100. 



