NOTES ON THE MOSQUITOS OF MADAGASCAR. 135 



Orthopodomyia arboricollis, d'Emmerez de Charmoy. 



Culex arhoricollis, d'Emmerez de Charmoy, Ann. Trop. Med. ii, p. 257 (1908). 



Newsteadina arhoricollu, Theobald, Ann. Trop. Med. ii, p. 297 (1908). 



This species, which is so far only known from Mauritius, is a typical Orthovodomyia. 

 I have examined the types in the Liverpool School of Tropical Medicine and find 

 that the female has the very short fourth tarsal joint on the front and middle legs, 

 characteristic of this genus, while the male hypopygium is very similar to that of 

 the other species. 



Taeniorhynchus (Mansonioides) uniformis, Theobald. 



Females of this species in quite recognisable condition from Ambatofanghera 

 (Bouet, 1905). Other specimens, probably of T. (M.) uniformis, were from Morous- 

 lava {Dr. Petit, 1901). 



Taeniorhynchus (Coquillettidia) flavus, Ventrillon. 



Culex flavus, Ventrillon {nee Motschulsky), Bull. Mus. Paris, x, p. 550 (1904). 



Culex grmididieri, Blanchard, Les Moustiques, p. 627 (1905). 



Several females, including cotypes of Ventrillon, from Tananarive {Dr. Ventrillon, 

 1905). 



This is very close to the African T. fuscopennatus, of which it may be a mere local 

 form ; the hypopygia are very similar, as is shown by a drawing taken from Ventrillon's 

 male cotype which M. Seguy kindly sent me ; this indicates the clasper as having 

 3. rather different shape. T. flavus, however, in all the examples I have seen, is 

 readily distinguishable by the coloration of the scales on the wing, particularly the 

 apical half. The costa is yellow, with a line of black scales on the outer margin on 

 its basal two-thirds ; subcostal and first longitudinal veins predominantly yellow, 

 apically entirely so ; stems of fork-cells and tips of veins round wing-tip yellow ; 

 remaining veins and fringe mainly black. This description is considerably at 

 variance with that of Ventrillon, but an examination of the cotypes showed that 

 his was inaccurate. 



T. fuscopennatus differs in having the dark and light wing-scales fairly evenly 

 mixed, and also in having the integument of the thorax blackish or dark brown, 

 that of T. flavus being light brown. 



T. aureus, Edw., has an almost greater resemblance even than T. fuscopennatus, 

 but it again has a rather differently shaped clasper, and has the costa entirely yellow. 



I have adopted the name flavus rather than grandidieri, because the Culex 

 Jlavus of Motschulsky is probably an Aeies, Ventrillon's Xat^T flavus being therefore 

 valid in the genus Taeniorhynchus. 



Culex ventrilloni, sp. n. 



$. Head scales narrow, blackish ; a rim round the eyes and a longitudinal band 

 down the middle pale golden. Proboscis with a distinct yellow median ring, broader 

 below than above. Palpi one-fourth as long as the proboscis, black, with some 

 white scales about the middle. Thorax blackish brown, bristles dark. Prothoracic 

 lobes with a few narrow golden scales ; mesonotum with golden and dark brown 

 scales, the former occurring in an indefinite line in the middle and in some large 



