CULICID^: THE ANOPHELES MOSQUITOES 77 



The wing-scales are mostly dark coloured, there being no 

 conspicuous spots in field or fringe, but there are two 

 conspicuous yellow spots on the costa. Malay Peninsula. 



4. Australian Species. 



Anopheles {Myzorhynchus) bancroftii, Giles. Palpi and 

 legs black, the tarsal segments pallid at the extreme tip. 

 Wings black, though there are some scattered white scales ; 

 costa black with two white breaks, one of which is at the 

 tip of the wing. 



Subgenus Christya, Theobald. 



As in the subgenera Anopheles, Myzorhynchiis, and 

 Arribalzagia, the main vestiture of the scutum consists of 

 sparse hairs. On either side of every segment of the 

 abdomen there are regular outstanding tufts of stiff and 

 very slender scales of extraordinary length. In other 

 respects the single species — found in Eastern Africa — which 

 is separated to form this " subgenus " closely resembles the 

 species of Myzorhynchus. 



Anopheles {Christya) implexus, Theobald. Uganda. On 

 the last segment of the abdomen and on the genital lobes 

 there are some ordinary scales. The length of the slender 

 scales of the lateral tufts is about two-thirds the breadth of 

 the abdomen. Palps shaggy, with three white bands and 

 white tip. Femora and tibiae barred with white; tarsal 

 segments of front and middle legs white at base; in the 

 hind legs the greater part of the 2nd tarsal segment, all the 

 3rd and 4th segments, and the proximal half of the 5th are 

 white. The wings have a few small yellow spots in the field 

 and fringe ; the costa has a pale base and two large yellow 

 spots with a small yellow spot between them. 



Subgenus Arribalzagia, Theobald. 



Including Arribalzagia, M anguinhosia, Kerteszia, and part of 

 Cydolepidopteron of Theobald's Monograph. 



There may be some narrow scales on the pronotum and 

 front edge of the scutum, but the vestiture of the scutum 

 consists mainly of hairs. Conspicuous broad scales are 



