172 INSECUTOR INSCITI^ MENSTRUUS 



6. Side pieces somewhat swollen ; clasp filament roundedly enlarged 



at tip Mochlostyrax 



Side pieces much swollen ; clasp filament distorted and tufted, 



Melanoconion 



In the following table the species are separated on color- 

 ation, without regard to the subgeneric divisions : 



Table of Species of Culex by Coloration 



1. Proboscis white-ringed in the female 2 



Proboscis not completely white-ringed 4 



2. White rings of the tarsi broad 3 



These rings narrow; abdomen with dorsal segmental white patches 



or bands corniger (var. hassardii Grabham) (2) 



3. Femora and tibiae with a fine white line on the outer side, 



tar sails (3) 

 These parts black on outer side stigmatosoma (4) 



4. Tarsi with white or pale rings at both ends of the joints 5 



Tarsi unhanded 6 



5. Large species; two distinct bare stripes on mesonotum. .d3»aH (19) 

 Smaller species without extensive bare stripes on mesonotum ; tarsal 



rings pale brown, indistinct, last joint of hind tarsi dark, 



restiians (8) 



6. Abdomen with apical segmental white bands, or at least lateral 



spots so situated saxatilis (1) 



Abdominal bands basal or absent 7 



7. Basal joint of antenna greatly elongated; abdomen with no white 



markings cancer (20) 



Basal joint of antenna unmodified 8 



8. Recumbent scales of occiput narrowly curved or lanceolate 9 



These scales at least in part broad and subtruncate 18 



9. Mesonotum red; abdomen with the bands indistinct, 



crythrothorax (5) 

 Not so colored 10 



10. Scales on the forks of second vein narrow, ligulate 11 



These scales broad and ovate melanurus (18) 



11. Abdomen unhanded dor sally 12 



Abdomen with basal segmental white bands , 13 



12. Lateral spots of the abdomen not visible AorsdWy . . . . salinarius (6) 

 These spots visible dorsally palus (7) 



13. Band of second abdominal segment triangularly produced 14 



This band transverse 16 



14. Proboscis white marked beneath corniger, var. 



Proboscis not so marked 15 



