572 



Mr, C. L. With)^combe's Notes on 



In the above table I have selected examples from the 

 hot season of 1921, because they give periods occupied 

 when a second brood appears. The great majority do 

 not emerge the same year, but winter as larvae within the 

 cocoon, pupation and emergence occurring the next year. 

 Others, however, showing no special promise as larvae, 

 pupate almost at once and emerge the same year. The 

 larvae feed upon all small insects, etc., and are not at all 

 particular as to species, although in nature they do not 

 apparently prey upon woolly ajihids of any ki-nd. 



Chrysopa dorsalis Burmeister. 

 Wing expanse 28-30 mm. 



This species much resembles C. perla in colour, from 

 which it can at once be separated by the more narrow 

 and acute wings, — in C. ferla the wings are broadly rounded 

 — by the black subcosta, and by the simple and undilated 

 tarsal claws. 



C. dorsalis is of very local occurrence in Britain. First 

 discovered in 1900 at Oxshott, it was not found there 

 again until 1921, by myself. Mr. E. A. Atmore has taken 

 the species with fair regularity near King's Lynn, and 

 Mr. B. S. Harwood in 1917 near Colchester. I have also 

 found it at Bagshot (1922), and it is probably to be taken 

 throughout the whole of the Surrey coniferous area. It is 

 entirely confined to pine woods. 



The only example which I have bred from the larva 

 emerged on the first of June, 1922, under outdoor conditions, 

 but the normal season of appearance is July with a slight 

 overlapping of June and August. C. dorsalis is much 

 more active and rapid in flight than its relative 2ycrla. 



Eggs I have not seen. Miss Alderson (2) describes 

 them as -8 mm. long, oval in shape and rich green in colour. 

 The footstalk is about 3-5 mm. long. They are laid singly 



