xxxiii, '22} ENTOMOLOGICAL NEWS 3 



cember, Mr. H. Hamilton, Zoologist, Dominion Museum, 

 showed me a live specimen of the larva of Uropctala carovei 

 White, sent in by Mr. Wilson of Bull's. This larva was handed 

 over to me for study, and I dissected it and studied its wing- 

 tracheation while staying at Mr. Hamilton's home at Karori. 

 For his kindness and assistance in this matter I desire to thank- 

 Mr. Hamilton very much. 



In January, 1920, I was the guest of Professor and Mrs. 

 Chilton at Christchurch, and spent three days visiting the Cass 

 Biological Station, in company with Professor Chilton and Mr. 

 Chas. Lindsay, of the Canterbury Museum. During the first 

 day's collecting, we located a large number of larval burrows 

 of Uropetala in a small mountain swamp about two miles from 

 the Station. The species to which these larvae belonged 

 proved, on careful study, to be new, and has been described by 

 me as U. chiltoni. The larva is not so fierce as that of U. 

 carovei, and more resembles the larva of Pctalura. It can be 

 easily obtained by inserting one's fingers into the burrows, and 

 working down to a depth of from ten to eighteen inches, when 

 the larva will be felt as a hard object against the soft walls of 

 the tunnel, and can easily be seized and drawn out. More than 

 fifty of the larvae of U. cJtiltoni were thus obtained, and were 

 brought back to the Station alive for study. 



T wish here to thank Professor Chilton for his great kind- 

 ness in allowing me the use of the Cass Biological Station, and 

 in placing himself at my disposal during my short but fruitful 

 visit there, and Mr. Lindsay for his help in the field. 



The larvae, when examined, proved to belong to the last 

 three instars. A number of dissections, of both fore and hind 

 wings were made. It was found that there was very little 

 difference in the arrangement of the tracheae in the variou- 

 instars, and the results also agreed entirely with those obtained 

 from the study of the larva of U. carovci, from Bull's, which 

 was in the last instar. 



Tn Plate I, fig. 1, I have shown the general scheme of 

 tracheation for the hind wing in the. penultimate instar. Points 

 of interest to be noted are the following: 



