24 [Jammrv, 



but are raised up at an angle with the alxlonien (this last feature moi'e 

 pronounced in Gordtfla and SracTiypeza than in the others). 



Scej)toiiia sometimes, if not habitually, turns its wings downward 

 at the sides of or more or less beneath the abdomen. It will be of 

 interest to know whether a similar habit exists in the probably allied 

 genera JEpicijpta and Delojysis. 



Most of the remaining genera (e. g., Lepfomorplius, ApoJcplifliisa, 

 Ti'fragonenra, Leiomyia, Triclionta, Phronia, Mi/cctopliila, Zipjomijia^ 

 exhibit no striking ])eculiarity, the wings being held Hat and overlapping 

 over the baek, and all the legs touching the surface. 



DiTOMYilDAE. 



Both Dilonn/ia and Symmeriis rest like Ccrophitus, with the hind 

 legs slightly raised, the wings Hat and overlapping over the baek. In 

 view of Keilin's account of the early stages, the assumption which might 

 have been made that this was an indication of relationship, cannot be 

 maintained. 



AnISOPODIDAE (RnYPIIIBAE). 



There is a cm-ious difference in the resting attitudes adopted by 

 Mh y pirns pun eta ftis and R.fenestralis. Both hold their legs and wings 

 in the normal jwsition, with the abdomen somewhat curved downwards, 

 but the former has the front part of the body raised, the tips of the 

 wings almost or (|uite toviching the surface, while the latter has the head 

 a little nearer the surface than the tail. Mycetohia when alive resembles 

 in shape and attitude a small R.fenestridis. 



CULICIDAE. 



The habit of raising and waving the hind legs is well known, as is 

 the difference in posture between Culicines and Anophelines, but the fact 

 is often overlooked that during hibernation both Chilex and Anopheles 

 rest with their legs and bodies close up against the surface, all the legs 

 wddely extended. Knab has recorded that the members of the tropical 

 tribe, Sabethini, raise their hind legs to a greater extent thar. do other 

 mosquitoes, even curving them forward (jver the head. 



Chaoborus resembles Anopheles in the position of the body ; 

 JSIochlonyx has a more Gulex-\\k& attitude, but in neither genus ai-e the 

 hind legs raised. 



Chironomidae. 



Chironominae. — All the members of this subfamily (except some- 

 times jSLctriocnemus) keep their front legs raised, but the })osition of the 



