214 MEDICAL ENTOMOLOGY 



Edwards in a recent paper divides the Culicina (sensu lato) into 

 two groups, as follows : 



Culex group. Eggs laid in masses ; the last segment of the abdo- 

 men of the female is broad and immoveable ; the claws of the female 

 are never toothed. 



Aedes group. Eggs laid singly ; last segment of the abdomen of 

 the female narrow, usually completely retractile into the penultimate ; 

 claws of the female, at least on the four anterior legs, nearly always 

 toothed. 



A few of the more important genera of the Culicina will now be 

 considered in detail. 



GENUS CULEX, L. 



The head is clothed with narrow curved scales, upright forked 

 scales and flat ones at the sides. The palpi are long in the male, 

 short in the female ; the scutellum is covered with narrow curved scales. 



Edwards would restrict this genus to those species in which the 

 male palpi turn upwards and are longer than the proboscis, the fore 

 and mid claws unequal, and the hind simple and equal. He regards 

 the following generic names as synonyms ; Heteroncyha, Arrib. ; 

 Lasioconops, Theo. ; Melanoconion, Theo. ; Trichopronomyia, Theo. ; 

 Neoculex, Theo. ; Pseudoheptaphlebomyia, Ventr. ; Mochlostyrax, Dyar 

 and Knab ; Jamesia, Christ. ; Maillitia, Theo. ; Aporoculex, Theo. ; 

 Leucomyia, Theo. ; Microculex, Theo. ; Oculeomyia, Theo. 



Culex fatigans, Wied. (Plate XXXVI, fig. 2). A medium-sized 

 species, with a brown thorax marked with indistinct dark lines. 

 Abdomen dark with pale creamy bands, and sometimes pale lateral 

 spots. Legs dark brown, bases of femora, knee spots, and occasionally 

 the apices of the tibiae, pale. Claws of fore and mid -legs of male 

 unequal and uniserrated ; the' hind claws simple and equal. It is widely 

 distributed, and is mainly a house-frequenting species. It is believed 

 to be the invertebrate host of Filaria bancrofti. In Madras, it is 

 commonly infected with Herpetomonas culicis, Novy, MacNeal and 

 Torrey. 



GENUS TAENIORHYNCHUS, ARRIBALZAGA. 



Palpi long in the male and short in the female ; head covered with 

 narrow curved and upright forked scales. Wing scales broad to very 

 broad, more or less bluntly pointed. The smaller claw on the fore and 

 mid tarsi of the male not serrated, a marked characteristic of the genus. 



