I9I4-1 ^- Brunetti : Review of Genera in Culicidae. 35 



generally much shortened second submarginal and first posterior 

 wing cells. They are mainly the giants of the family, with tufts 

 of brilliantly coloured scales on the abdomen. The genera are 

 differentiated as follows, but the table is not a satisfactory one, 

 being built on sexual characters, so that it is impossible to generi- 

 cally identify males unless the known corresponding females are 

 present also. 



Table of genera in Megarhini. 



Palpi long in (f and 2 (in 9 only a little 

 shorter than in o'). 



Last palpal joint in 9 truncate 



or rounded. . . . . Megarhinus, R. Desv. 



Last palpal joint in 9 long and 



pointed. . . . . A nkylorhynchus , Lutz. 



Palpi long in cf , not more than one-third 



as long as proboscis in 5 . . . Toxorhynchites,Theoh. 



Generic notes in Megarhini. 



Megarhinus, R. Desv. This is, of course, a well-marked 

 genus of long institution. Lynchiella, Lahille, in Peryassu, is 

 synonymous. 



Ankylorhynchus, Lutz. A somewhat unsatisfactory genus 

 built on the 9 palpi only, but if this character is constant it 

 would appear to be a natural group 



Toxorhynchites, Theob. 

 Worcesteria, Banks. 

 Teromyia, Leices. 



One of Teromyia's alleged distinctions is that the 9 palpi are 

 only half as long as the proboscis, and 5-jointed, as compared with 

 Toxorhynchites, in which they are from one-quarter to one-third as 

 long as the proboscis, and 4-jointed. The palpal length, anyway, 

 seems very difficult of exact determination and too arbitrary to be 

 a natural distinction 



A far stronger distinction, if it really exists, is in the alleged 

 cross vein between the subcostal and ist longitudinal veins, claimed 

 by Leicester for all his species. This would, of course, be the sub- 

 costal cross vein, but it is difficult to conceive that that author is 

 not mistaken, as this vein has never been dipterologically recorded 

 in the family. The juxtaposition of two veins often results in a 

 slight thickening of both which appears at first sight as a cross 

 vein, and in mv studies in TipuUdae and Mycetopkilidae few 

 points have given me more trouble than the decision as tothe 

 presence or absence of this cross vein, which in both these families 

 is found in some genera and not in others. 



Section m. CULICINL 



Although the Anophelini, Megarhini and Sabethini form 

 natural groups, each represented by a limited number of valid 



