Pupae of Culicidae, 
53 
Fig. 20. 
Genus Anopheles. 
Pupa of Anopheles maculipennis: a, the respiratory trumpet; b 3 respiratory trumpet of 
Culex. II. Ova of A. maculipennis (greatly enlarged). III. d, ova of A. bifurcatus, 
as laid on the water; c, ova of A. maculipennis. (II, and III. after Howard and 
Grassi.) 
