No. 2.J EXTRAORDINARY NEW MA AY 77 'ME FLY. 87 



described three species of Dolichopodidae which he found 

 " flitting about in the spray of the breakers among the sea- 

 weeds on the rocks below high-water mark." Eaton, and 

 later Verrall, 1 describe certain flies from the Kerguelen Islands 

 which live on the verge of the tide. One of these forms, 

 Halirytus ampJiibius, assigned to the Chironomidae, has 

 6-segmented antennae and rudimentary wings " reaching to 

 the apex of the first abdominal segment." But it has but 2-seg- 

 mented palpi, and the halteres are of the usual form. It was 

 found "walking upon the surface of puddles and tide pools." 

 And many of the flies were undoubtedly occasionally submerged 

 at high tide, although none was seen under water. 



STANFORD UNIVERSITY, CALIFORNIA. 



1 Verrall, in Phil. Trans. Royal Soc. Vol. clxxxvi, p. 247, PI. XIV, Fig, 6. 

 London, 1879. 



