24 INSECUTOR INSCITI^ MENSTRUUS 



of Culicada fluviatilis. So Culicada fluviatilis Theobald (Mon. 

 Culic, iv, 342, 1907), is a synonym of A'edes oswaldi Lutz. 

 Gualteria fluviatilis Peryassii is the old Culex fluviatilis Lutz 

 and remains a synonym of this one. Theobald's type of 

 Culicada fluviatilis had the mesonotum much rubbed and al- 

 most without scales. 



Genus MEGARHINUS Robineau-Desvoidy 



Megarhinus chrysocephalus Lutz. 



Only a male is present with broken legs. Head covered 

 with coppery golden scales, which are rather characteristic 

 and not present in solstitialis Lutz, violaceous Wiedemann, or 

 purpureus Theobald. Trichopygus Wiedemann has it a little 

 in the same way and chrysocephalus may be a synonym of 

 trichopygus. 



Megarhinus fluminensis Neiva. 



One male specimen. Identical with trinidadensis Dyar and 

 Knab. 



Megarhinus grandiosus Williston. 



Described from Guerrero, Mexico. One female specimen 

 present. Mid legs missing; Williston does not mention the 

 mid legs and only describes a female, probably the same fe- 

 male, which we had under observation. 



Front legs white on tips of first, all of second, third and 

 fourth joint, fifth joint dark on one side, white with a few 

 dark scales on the other. Hind legs with tip of third joint, 

 all of fourth and fifth white, according to description, broken 

 in the specimen. 



Williston thought his specimen different from rutila Coquil- 

 lett by the leg markings. The leg markings of rutila as de- 

 scribed in Howard, Dyar and Knab differ a little from Coquil- 

 lett's description. The white markings in the grandiosus speci- 

 men agree fairly well with rutila as described by Howard, 

 Dyar and Knab. 



The general color of the legs of rutila are given as dark 

 blue; the specimen of grandiosus, however, has at least as much 



