62 



THE ENTOMOLOGIST. 



Winged insects whose wings develop outside the 

 body. 



Winged insects whose wings arise as invagina-. 



tions of the hypodermis, and for a time project 



within the body. 



ExOPTERYGOTA : 



Orthoptera 



Plecoptera* 



Psocoptera 



Zoraptera 



Isoptera 



Embioptera 



Ephemeroptera 



Paraneuroptera 



== Odonata 

 Thysanoptera 

 Hemiptera 



Endopterygota : 

 Neuroptera 

 Triehoptera 



Lepidoptei'a 

 Coleoptera 

 Strepsiptera 

 Diptera 

 Hymenoptera J 



It will be noticed that Protura and Zoraptera have been added to 

 the list of 1909, and Dr. Chapman suggests a small Order, Zeugoptera, 

 between the Triehoptera and Lepidoptera. Some biologists prefer to 

 separate the earwigs from the Orthoptera as Dermaptera ; and some 

 would still further reduce the Neuroptera by breaking off the Scorpion- 

 flies, etc., at one end, as Mecoptera, and a group containing the 

 alderflies and others, as Megaloptera, from the other. — W. J. L.] 



Leucania Vitellina reared from Ova. — In October, 1920, 

 Mr. L. W. Newman sent me some ova of L. vitellina. These 

 hatched the same month and I placed the larvae on Poa annua. I 

 kept them in my sitting-room, where there was generally a fire every 

 evening. They did not attempt to hibernate, but fed right through 

 the winter. As they got larger I moved them into a large pan in 

 which I put a pot of Cocksfoot grass. I had potted up a number of 

 small tufts of this grass, which I brought on in the greenhouse, and I 

 used to change the food every other night. When forcing this 

 species in a dry room it is advisable to have the grass slightly damp, 

 as when changing their skins the larva? have difficulty in getting out 

 of them. It is not a good plan to sprinkle them with water otherwise 

 they go off. The grass, being grown in a damp greenhouse, is moist 

 enough. They had all pupated by the middle of April, 1921 ; the 

 first emergence was on May 18th and the last on June 8th. They 

 always emerged in the early morning. Almost the whole brood 

 were males and all large specimens. — H. McD. Edelsten; Oakhurst, 

 Balcombe Eoad, Haywards Heath. 



Early and Late Dates for Lepidoptera. — The following dates 



of appearance of certain species of Lepidoptera in this district during 



the past abnormal season may be of interest: February 16th, Selenia, 



bilunaria and Eupithecia pumilata (the last specimen seen of the 



* The components of the Neuroptera (Linn.) are in block type. 



