II 



FLIES WITH AQUATIC LARV^ 



163 



Copepod Crustacea creep out of water by a similar 

 use of the surface-film.^ 



The attitude, the mode of breathing and the mode 

 of feeding observed in the larva of Dixa, are curiously 



M 





F'',\/' 



Fig. 49. — Pupa of Dixa in side-view, and from ventral aspect. 



like those of a certain Gnat larva, Anopheles. So 

 close is the resemblance that an experienced entomo- 

 logist has, in a published paper, mistaken one for the 

 ^ Journ. Limi. Soc. Zool., Vol. XXV. p. 18 (1894). 



M 2 



