226 



MEDICAL ENTOMOLOGY 



2. 



A single fringe spot. Lighter species. Third long 

 vein dark y -, ( , culicifacies. 



Palpi with narrow bands. 



Wings more black than white. White spots small . nigerrimus. 

 Wings more light than black. Spots large and 



distinct. Hill species simlensis. 



Hind tarsal joints not banded. 



Palpi unbanded, broad white band on femur. Hill 



species lindesayi. 



Palpi banded. 



A single fringe spot. Third long vein dark . . culicifacies. 

 Numerous frings spots. Third long vein light. 

 Tip of palpi white. 



Narrow almost hair-like scales on thorax. Stem of 



second long vein mostly dark ..... listoni. 

 Broad scales on thorax. Stem of second long vein 



mostly light , , , nursei. 



Tip of palpi black. 

 Narrow almost hair-like scales on thorax. Stem of 



second long vein mostly dark ..... turkhudi. 

 Broad scales on thorax. Stem of second long vein 



mostly light f . nigrifasciatus. 



b. Legs speckled (Femora and tibiae spotted). 



1 Palpi with four well marked white bands (Beware of 



speckling imitating fourth palpal band). 

 Tibio-tarsal joint of hind leg forms broad white conspi- 

 cuous band elegans. 



Tibio-tarsal joint of hind leg without broad white band, punctulata. 

 2. Palpi with three well marked bands. Beware of speck- 

 ling imitating fourth band. 



Palpi with two broad apical and narrow basal bands. 

 Palpi speckled. Scales on nearly all abdominal 

 segments ......... Stephens!. 



Palpi with one broad apical and two narrow bands 

 palpi not speckled. Scales confined to last segment 



or so ludlowl. 



In using the above key Christophers draws attention to the following points : 



Note 1. Speckling on the legs means spotting or banding of the femur and tibia, 

 (not banding of the tarsal joints.) Speckling is if present distinct. A faint mottling is 

 not considered as speckling. 



Note 2. Tarsal segments completely white are counted from the tip, stopping at the 

 first dark band. If the tip is white, for from 1/12" to &", two or three segments are pure white. 

 If the amount of terminal white is very small, one or less segments only are white. 



Note 3. Speckling on the palpi refers to white spots on the dorsal surface, usually 

 between the middle and basal palpal band. 



Species entered in more than one place .may show sometimes one appearance and 

 sometimes another (e. g. tarsal banding in culicifacies) or an appearance may be over- 

 looked (e. g., the minute, point of whi.te on th$ extreme tip of the hind tarsi of 

 punctulata.) In either case the table will work out correctly. 



Anopheles (Nyssomyzomyia) rossii, Giles. (Plate XXXVII, fig. 1.) 

 Palpi brown with three white bands, the Epical being the broadest. 

 Thorax fawn coloured. Abdomen brown. Legs brown, the distal ends 

 of the femora, tibiae, and all the tarsal segments except the last, with 



