88 INSECUTOR INSCITI^ MENSTRUUS 



The following tables separate first the genera of the tribe 

 Culicini, then the subgenera of Culex and lastly the species 

 of Culex as far as the American species are known to me 

 in the male genitalia. 



It! the monograph^ the parts called the "harpagones" (vol. 

 iii, p. 224, dichotomy, 3 et seq.) are here identified as unci. I 

 reserve the name harpagones for the structures so denominated 

 in Aides. I have omitted dyari and melanurus, commonly 

 classed in Culex, as I have separated them generically under 

 the headings Culicella and Climacura respectively. 



It may be remarked that the tribe Sabethini are not dis- 

 tinguishable from the Culicini on genitalic characters (com- 

 pare the monograph, vol. iii, p. 21, 1915). The lowest mem- 

 bers, Joblotia and Lesticocampa, have genitalia essentially as 

 in Megarhinus and Orfhopodomyia, the unci only being some- 

 what modified. In the higher genera, the primitive condition 

 of the basal parts remains ; but the side pieces and clasp-fila- 

 ments are greatly modified, the hollow basal lobes of the 

 former having entirely disappeared. The two series are quite 

 distinctly separated by their mode of evolution. 



Table of Genera of the Tribe Culicini 



1. .i^doeagus present ; basal membrane long, conical, divided ; no 



basal chitinized appendages Anopheles " 



^doeagus absent ; basal membrane slight ; basal chitinized organs 

 present 2 



2. Unci only present, undivided, capitate Acdeomyia 



Unci and harpes present, in two pairs 3 



3. Unci separated, hooked ; harpes slender, columnar, opposed to the 



unci Uranotcenia 



Unci columnar or divided ; harpes broad, concave, the tips toothed 

 or spinose, parallel to the unci 4 



4. Side piece vv^ith a hollow basal lobe tipped by stout setae, modified 



in the higher forms, but the tip persisting as an appendage of 



the side piece, bearing spines, etc 6 



Side piece without a hollow basal lobe, devoid of lobes, except in 

 the higher forms, where lobes appear secondarily, but not 

 hollow • 5 



'Howard, Dyar and Knab, The Mosquitoes of North and Central America and 

 the West Indies, iii, 1913. 



' Coelodiazesis is not distinguishable. 



