196 AGRICULTURAL EXPERIMENT STATION. 



Figure 58. 



Culex discolor: i, larva; 2, one of tlie mouth brushes; 3, the nientum; 4, antenna; s, 

 maxillary palpus; 6, mandible; 7, anal segments, siphon and tracheal gills; 8, a scale band 

 of the 8th segment; 9, an individual scale: all much enlarged. (Original.) 



