1930] Key to the Mosquitoes of New England 237 
Apex of wing uniformly dark colored 3 
3. Segments of palpi white scaled at apices walkeri 
Segments of palpi uniformly dark scaled 
quadrimaculatus 
Larvx 
1. Abdomen with six pairs of dorsal palmate tufts . 2 
Abdomen with five pairs of dorsal palmate tufts.. 3 
2. Mandibles with eleven terminal teeth; six branched 
hairs on mandibles arranged in an outward projecting 
row quadrimaculatus 
Mandibles with nine terminal teeth ; ten branched 
hairs on mandibles, arranged in a forward project- 
ing row walkeri 
3. Lateral plate of the eighth abdominal segment with 
22-29 (8 to 9 long) teeth maculipennis 
Lateral plate of the eighth abdominal segment with 
17-22 (usually 6-7 long) teeth punctipennis 
Table to Species of Culex 
1. Abdominal segments transversely white banded api- 
cally apicalis 
Abdominal segments with white bands basally or 
none 2 
2. Abdominal segments without basal white bands 
salinarius 
Abdominal segments with basal white bands 3 
3. Basal white band of the second abdominal segment 
usually not triangularly produced medianly 
territans 
Basal white band of the second abdominal segment 
triangularly produced medianly pipiens 
