76 Proceedings of the Royal Physical Socvety. 
frequent. In this species both branches of the first pair 
of swimming feet are three-jointed, and of nearly equal 
length. 
Attheyella cryptorum, Brady. 
1868, Canthocamptus cryptorwm, Brady, Jour. Microscop. Soc., vol. 
ix., Di -Viny fies: 2-10. 
1880. Attheyella cryptorum, Brady, Mon. Brit. Entom., vol. ii., p. 60, 
pl. lii., figs. 1-18. 
Habitat—Duddingston Loch; in a ditch in the vicinity 
of Harelaw Dam, Balerno, near Edinburgh. Apparently rare. 
** 
? 
