236 . MEDICAL ENTOMOLOGY 



of the plains of India ; Christophers records it as occurring in swarms in 

 the forest regions of the Andaman Islands, where it attacked viciously. 

 It seems hardly ever to come into houses, and may be considered a 

 sylvan species. 



Anopheles (Myzorhynchus) sinensis, Wiedemann. Palpi dark with 

 four white bands, the apical one including the tip. Thorax dark, cloth- 

 ed with yellowish scales. Abdomen covered with yellowish hairs. Legs 

 brown with small white bands at all the joints. Costa almost entirely 

 black, except for two small white spots, one at the junction of the mid- 

 dle and apical third, the other near the apex of the wing. Larva with 

 the median frontal hair forked, external hairs branched and forming a 

 cockade ; the antenna has a large branched hair on the inner side ; pal- 

 mate hairs are only present on the abdomen ; leaflet long, lance-shaped 

 and serrated, filament short and stout. This species is common in 

 Bengal, Punjab, Bombay, and the Madras Presidency. The larvae are 

 generally found in pools of water away from houses. According to 

 James and Listen, Anopheles (Myzorhynchus) nigerrimus is identical 

 with sinensis. 



Anopheles (Neocellia) fowleri, Christophers. Palpi black with a broad 

 apical band, and two narrow pale bands dividing the palps into three 

 equal areas. Thorax black, covered with creamy white scales arranged 

 in rows. Abdomen clothed with light coloured hairs and creamy white 

 scales. Legs brownish, first to third tarsal segments of fore legs apically 

 banded, the last two segments black. Pale bands on apex of first two 

 tarsal segments of mid legs, the last three segments dark. Costa with 

 four dark spots, the third from the apex of the wing the longest, and two 

 small basal spots. This species resembles fuliginosus, but is of a lighter 

 colour. Its larva also resembles that of fuliginosus, but the median 

 frontal hairs are more branched. Palmate hairs absent on the thorax 

 and the first abdominal segment ; the second has undeveloped ones. 

 The filament is half the length of the stem of the leaflet. The larvae 

 are found in rice-fields, in borrow pits and in tanks, but not in flowing 

 water. The imagines are very common in certain parts of the Central 

 Provinces during the cold weather. 



Anopheles (Christophersia) halli, James. Palpi clothed with white 

 scales, forming five broad white bands, separated by four narrow black 

 bands. Thorax brown with dark eye-like spots. Abdomen light brown. 

 Legs dark and speckled with clear white spots ; the third, fourth and 

 fifth hind tarsi have white basal and apical bands. Costa with five dis- 

 tinct black spots, and some small indistinct ones near the base. This 



