98 ENTOMOLOGY FOR MEDICAL OFFICERS 



vital tenacity of its eggs, and the number of different infec- 

 tions that it is capable of "carrying," one of the most 

 formidable insects in existence, especially when it is remem- 

 bered that in the case of one of the most appalling diseases 

 for which it is responsible (namely, yellow fever) it can 

 transmit the infection to its extremely resistant eggs, and so 

 to the next generation, and perhaps even beyond. 



In the Mucidus group two species of Mansonia, one of 

 which has a very wide distribution, are important as being 

 among the numerous nurses of Filaria bancrofti. 



I. CuLEx Series. 



CULEX, L. {Aporoculex, Theob., Culicada, Felt, Culicelsa, 

 Felt, Culiseta, Felt, Microculex, Theob., Protoculex, Felt). 

 Scutellum with sickles only. The " lateral " wing-scales for the 

 most part long and narrow. Many species, found in all parts 

 of the world. Culex mimeticus, Noe, found in South Europe, 

 India, Malay Peninsula, Ceylon, and China, has the wings 

 spotted like an Anopheles {Myzomid). 



Melanoconion, Theobald {Neomelanoconion, Theobald). Wing-scales 

 broader than in Culex. Numerous species, small and black. 



Protomelanoconion, Theobald. As Melanoconion, but male palpi 

 shorter than proboscis, i species ; West Africa. 



Leucomyia, Theobald. As Culex, but anterior half of scutum white, 

 and wing-scales broader. 6 species ; Oriental, Australian, Ethiopian, 

 Neotropical. 



Grabhamia, Theobald. As Culex, but the wing-scales are broader 

 and some of them light-coloured or white. Numerous species ; found in 

 all parts. 



Pseudograbhamia, Theobald. Like Grabhamia, but some of the 

 scales of the scutellum are squames. i species ; Ceylon and South India. 



Pecomyia, Theobald. Like Pseudograbhamia, but the squames of the 

 sides of the head extend more on to the crown. 2 species ; Oriental 

 Region. 



Neopecomyia, Theobald. Like Pecomyia, but the wing-scales are all 

 dark, i species ; West Africa. 



Protomacleaya, Theobald. As Culex, but the scales of the middle 

 lobe of the scutellum are squames, and the squames of the side of the 

 head ascend higher. 2 species ; North America, West Africa. 



Stenoscutus, Theobald. As Culex, but the scales of the lateral lobes 

 of the scutellum are squames and those of the middle lobe are elliptical 

 and squame-like. I species ; West Africa. 



