GENUS ANOPHELES 311 



Habitat. — Italy, West and Central Africa, India, Madras, and 

 Centi-al Provinces. This species has been shown by Grassi to be the 

 commonest transmitter of human malaria in Italy, and also by Grassi 

 and Noe to be the intermediate host m canine filariasis. 



21. ANOPHELES ROSSII, Giles (First edition, p. 149). 



Plate ix, tig. 11a, Wing of ? ; lib. Venation of ^ Wing; lie, Tarsal 



claws of S . 



Wing with the costa pale at the apex and base, but generally 

 black, interrupted by two large yellowish spots opposite the fork- 

 cells, and just in front of the cross-veins respectively ; the black 

 area, next internal to these is very large and is T-shaped, owing 

 to the presence of a sliort length of black upon II, beneath the 

 middle of the thrice longer area on the costa and auxiliary ; 

 internal to this there are only three minute white dots ; there is a 

 row of sub-ap cal black dots on every one of the long veins, and 

 three or four others, and the fringe is yellow at the tip, and has 

 pale patches at all the longitudinal junctions, except that of VI. 

 Tarsi with yellowish rings on all but the last articulations of 

 the fore and mid legs. Thorax deep brown, with, in the fresh 

 state, a dorsal, tun-shaped patch of velvety, pale cinereous 

 bloom. Abdomen dusky, nude, densely clothed with golden- 

 brown hairs. 



$ . — Head blackish, with pale scales in front, and with a tuft of pale 

 hairs projecting forwards, black scales at the top and sides ; eyes black ; 

 antennte brown, with pale hairs and pubescence ; basal joint ochreous- 

 brown, with a few creamy scales ; proboscis dark brown, apex sometimes 

 pale ; palpi dark scaled, apically white, and with two other pale bands 

 near the apices of the second and third joints ; clypeus pale brown. 



^ . — Palpi swollen at the end, yellow, with a broad black band at the 

 base of the second joint, a broad black band at the base of the third, and 

 a small one near the apex of the same joint, and a narrow ring of black at 

 the base of the last two joints ; hair tufts short, pale ; the base of the 

 palpi densely black-scaled; proboscis dark brown, pale at the tip; 

 antennae with silky, golden-brown plumes. Wings marked much as the 

 ? , but in many ^ 's, especially in those from South India, there is a 

 small additional spot beneath the second costal spot, besides the one 

 forming the Tj and in a few $ 's I have noticed the same. 



Professor Grassi regards this as identical with his Aii. sui^erpictus, 

 but there are few species more easily distinguished. According to 

 Dr. Daniels it does not carry the tertian crescent stages of the malarial 

 parasite. Length. — From 4*6 mm. (J to 6 mm. $ . 



Habitat. — Common throughout India. 



