Genus Ankylorhynchus. 127 



Genus Ankylorhynchus. Lutz. 

 Last segment of $? palpi long and pointed. 



Palpi of J short 

 Genus Toxorhynchites. Theobald. 

 Palpi of $ not more than one-third length of the proboscis. 



In all the Megarhininae the scale structure is similar. 

 Head and scutellum scales are flat, and the thorax has dense 

 scales becoming large and spatulate before the scutellum and 

 over the roots of the wings. The proboscis is long and much 

 bent in all, and the small first fork-cell is also common to the 

 three genera. They may or may not have a caudal fan. 



That they are closely connected a casual glance will show, 

 yet under palpal classification some should come (Toxorhynchites) 

 near Culex, and others (Megarhinus) near Anopheles. 



Genus ANKYLORHYNCHUS. Lutz (in Bourroul). 

 Mosq. do Brasil, p. 3 (1904). 



This genus resembles Megarhinus, but in the J the palpi 

 have the last segment long and pointed, whereas in Megarhinus 

 the long $ palpi end as if broken off; being rounded or blunt. 



Three species are included, which tabulate as follows : — 



Feet of 9 all same colour. 



No caudal tuft neglectus. Lutz. 



Bronzy-black caudal tuft trichopygus . Wiedemann . 



Second and fourth middle tarsals white below violaceus. Wiedemann. 



( = purpureas. Theobald) . 



Ankylorhynchus neglectus. Lutz (1004). 

 Mosquitos do Brazil, p. 14 and 65 (1904). 

 The following is Lutz's description : — 



" Proboscis. — Longer than the palpi, black, with blue scales at the 

 bend. 



Palpi. — With three long segments, the second being larger than the 

 first and the third larger than the second. The scales on the feelers in 



